diff --git a/.github/workflows/lit_samples_build.yml b/.github/workflows/lit_samples_build.yml
index e3679e82d..4dc55bd23 100644
--- a/.github/workflows/lit_samples_build.yml
+++ b/.github/workflows/lit_samples_build.yml
@@ -35,21 +35,9 @@ jobs:
         with:
           node-version: '20'
 
-      - name: Install web_core deps
-        working-directory: ./renderers/web_core
-        run: npm ci
-
-      - name: Build web_core
-        working-directory: ./renderers/web_core
-        run: npm run build
-
-      - name: Install lib's deps
-        working-directory: ./renderers/lit
-        run: npm i
-
-      - name: Build lib
-        working-directory: ./renderers/lit
-        run: npm run build
+      - name: Build lit renderer and its dependencies
+        working-directory: ./samples/client/lit
+        run: npm run build:renderer
 
       - name: Install all lit samples workspaces' dependencies
         working-directory: ./samples/client/lit
diff --git a/renderers/lit/package-lock.json b/renderers/lit/package-lock.json
index ced356e5f..437310760 100644
--- a/renderers/lit/package-lock.json
+++ b/renderers/lit/package-lock.json
@@ -1007,8 +1007,7 @@
       "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/signal-polyfill/-/signal-polyfill-0.2.2.tgz",
       "integrity": "sha512-p63Y4Er5/eMQ9RHg0M0Y64NlsQKpiu6MDdhBXpyywRuWiPywhJTpKJ1iB5K2hJEbFZ0BnDS7ZkJ+0AfTuL37Rg==",
-      "license": "Apache-2.0",
-      "peer": true
+      "license": "Apache-2.0"
     },
     "node_modules/signal-utils": {
       "version": "0.21.1",
diff --git a/renderers/lit/src/0.8/ui/context/context.ts b/renderers/lit/src/0.8/ui/context/context.ts
new file mode 100644
index 000000000..0e5b7acf4
--- /dev/null
+++ b/renderers/lit/src/0.8/ui/context/context.ts
@@ -0,0 +1,24 @@
+/*
+ Copyright 2025 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import {markdownContext} from "./markdown.js";
+import {themeContext} from "./theme.js";
+
+export { 
+  markdownContext as markdown, 
+  themeContext as theme, 
+  themeContext, // Preserved for backwards compatibility. Prefer using `theme`.
+};
diff --git a/renderers/lit/src/0.8/ui/context/markdown.ts b/renderers/lit/src/0.8/ui/context/markdown.ts
new file mode 100644
index 000000000..0ad79d447
--- /dev/null
+++ b/renderers/lit/src/0.8/ui/context/markdown.ts
@@ -0,0 +1,26 @@
+/*
+ Copyright 2025 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+import {
+  DirectiveResult,
+} from "lit/directive.js";
+import { createContext } from "@lit/context";
+
+/**
+ * A Lit Context to override the default (noop) markdown renderer.
+ */
+export const markdownContext = createContext<DirectiveResult>(
+  Symbol("a2ui-lit-markdown-renderer")
+);
diff --git a/renderers/lit/src/0.8/ui/directives/directives.ts b/renderers/lit/src/0.8/ui/directives/directives.ts
index 3c838da9e..e81f614d6 100644
--- a/renderers/lit/src/0.8/ui/directives/directives.ts
+++ b/renderers/lit/src/0.8/ui/directives/directives.ts
@@ -14,4 +14,4 @@
  limitations under the License.
  */
 
-export { markdown } from "./markdown.js";
+export { noopMarkdown } from "./noop_markdown.js";
diff --git a/renderers/lit/src/0.8/ui/directives/noop_markdown.ts b/renderers/lit/src/0.8/ui/directives/noop_markdown.ts
new file mode 100644
index 000000000..4b343db4f
--- /dev/null
+++ b/renderers/lit/src/0.8/ui/directives/noop_markdown.ts
@@ -0,0 +1,35 @@
+/*
+ Copyright 2025 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import { html, TemplateResult } from "lit";
+import {
+  directive,
+  Directive,
+} from "lit/directive.js";
+
+/**
+ * "Handles" Markdown rendering by doing nothing.
+ *
+ * Configure @a2ui/lit-markdown, or your custom Markdown renderer
+ * to actually parse and render Markdown in your app.
+ */
+class NoopMarkdownRendererDirective extends Directive {
+  render(markdown: string, _tagClassMap?: Record<string, string[]>) : TemplateResult {
+    return html`<pre>${markdown}</pre>`;
+  }
+}
+
+export const noopMarkdown = directive(NoopMarkdownRendererDirective);
diff --git a/renderers/lit/src/0.8/ui/text.ts b/renderers/lit/src/0.8/ui/text.ts
index 82ef4aea0..85e1aebcb 100644
--- a/renderers/lit/src/0.8/ui/text.ts
+++ b/renderers/lit/src/0.8/ui/text.ts
@@ -16,7 +16,9 @@
 
 import { html, css, nothing } from "lit";
 import { customElement, property } from "lit/decorators.js";
-import { markdown } from "./directives/directives.js";
+import { consume } from '@lit/context';
+import { noopMarkdown } from "./directives/noop_markdown.js";
+import * as Context from "./context/context.js";
 import { Root } from "./root.js";
 import { A2uiMessageProcessor } from "@a2ui/web_core/data/model-processor";
 import * as Primitives from "@a2ui/web_core/types/primitives";
@@ -44,6 +46,9 @@ export class Text extends Root {
   @property({ reflect: true, attribute: "usage-hint" })
   accessor usageHint: Types.ResolvedText["usageHint"] | null = null;
 
+  @consume({context: Context.markdown})
+  accessor markdownRenderer = noopMarkdown;
+
   static styles = [
     structuralStyles,
     css`
@@ -116,8 +121,8 @@ export class Text extends Root {
         break; // Body.
     }
 
-    return html`${markdown(
-      markdownText,
+    return html`${this.markdownRenderer(
+      markdownText, 
       Styles.appendToAll(this.theme.markdown, ["ol", "ul", "li"], {})
     )}`;
   }
diff --git a/renderers/lit/src/0.8/ui/ui.ts b/renderers/lit/src/0.8/ui/ui.ts
index 476d4d567..7038d90a5 100644
--- a/renderers/lit/src/0.8/ui/ui.ts
+++ b/renderers/lit/src/0.8/ui/ui.ts
@@ -43,7 +43,7 @@ import { TextField } from "./text-field.js";
 import { Text } from "./text.js";
 import { Video } from "./video.js";
 
-export * as Context from "./context/theme.js";
+export * as Context from "./context/context.js";
 export * as Utils from "./utils/utils.js";
 export { ComponentRegistry, componentRegistry } from "./component-registry.js";
 export { registerCustomComponents } from "./custom-components/index.js";
diff --git a/renderers/markdown/README.md b/renderers/markdown/README.md
new file mode 100644
index 000000000..5e26efd3d
--- /dev/null
+++ b/renderers/markdown/README.md
@@ -0,0 +1,10 @@
+This directory contains the default markdown implementations for A2UI.
+
+* `markdown-it-shared` is a shared markdown renderer that uses markdown-it and
+  DOMPurify to render markdown content in general.
+* `markdown-it-lit` is the Lit facade of the markdown renderer for Lit.
+* `markdown-it-angular` is the Angular facade of the markdown renderer
+  for Angular.
+
+Users should use the facade packages in their apps. There's nothing of interest
+in the shared renderer package.
diff --git a/renderers/markdown/markdown-it-lit/.npmrc b/renderers/markdown/markdown-it-lit/.npmrc
new file mode 100644
index 000000000..06b0eef7e
--- /dev/null
+++ b/renderers/markdown/markdown-it-lit/.npmrc
@@ -0,0 +1,2 @@
+@a2ui:registry=https://us-npm.pkg.dev/oss-exit-gate-prod/a2ui--npm/
+//us-npm.pkg.dev/oss-exit-gate-prod/a2ui--npm/:always-auth=true
diff --git a/renderers/markdown/markdown-it-lit/README.md b/renderers/markdown/markdown-it-lit/README.md
new file mode 100644
index 000000000..53e88e951
--- /dev/null
+++ b/renderers/markdown/markdown-it-lit/README.md
@@ -0,0 +1 @@
+A2UI markdown renderer for Lit.
diff --git a/renderers/markdown/markdown-it-lit/package-lock.json b/renderers/markdown/markdown-it-lit/package-lock.json
new file mode 100644
index 000000000..2d1a22bb0
--- /dev/null
+++ b/renderers/markdown/markdown-it-lit/package-lock.json
@@ -0,0 +1,618 @@
+{
+  "name": "@a2ui/markdown-it-lit",
+  "version": "0.8.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@a2ui/markdown-it-lit",
+      "version": "0.8.1",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@a2ui/lit": "file:../../lit",
+        "@a2ui/markdown-it-shared": "file:../markdown-it-shared",
+        "@a2ui/web_core": "file:../../web_core",
+        "@lit/context": "^1.1.4",
+        "lit": "^3.3.1"
+      },
+      "devDependencies": {
+        "@types/node": "^24.10.1",
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
+    "../../lit": {
+      "name": "@a2ui/lit",
+      "version": "0.8.1",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@a2ui/web_core": "file:../web_core",
+        "@lit-labs/signals": "^0.1.3",
+        "@lit/context": "^1.1.4",
+        "lit": "^3.3.1",
+        "markdown-it": "^14.1.0",
+        "signal-utils": "^0.21.1"
+      },
+      "devDependencies": {
+        "@types/markdown-it": "^14.1.2",
+        "@types/node": "^24.10.1",
+        "google-artifactregistry-auth": "^3.5.0",
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
+    "../../web_core": {
+      "name": "@a2ui/web_core",
+      "version": "0.8.0",
+      "license": "Apache-2.0",
+      "devDependencies": {
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
+    "../markdown-it-shared": {
+      "name": "@a2ui/markdown-it-shared",
+      "version": "0.0.1",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "markdown-it": "^14.1.0"
+      },
+      "devDependencies": {
+        "@types/markdown-it": "^14.1.2",
+        "@types/node": "^24.10.1",
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
+    "../web_core": {
+      "name": "@a2ui/web_core",
+      "version": "0.8.0",
+      "extraneous": true,
+      "license": "Apache-2.0",
+      "devDependencies": {
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
+    "node_modules/@a2ui/lit": {
+      "resolved": "../../lit",
+      "link": true
+    },
+    "node_modules/@a2ui/markdown-it-shared": {
+      "resolved": "../markdown-it-shared",
+      "link": true
+    },
+    "node_modules/@a2ui/web_core": {
+      "resolved": "../../web_core",
+      "link": true
+    },
+    "node_modules/@lit-labs/ssr-dom-shim": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/@lit-labs/ssr-dom-shim/-/ssr-dom-shim-1.5.1.tgz",
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+      "license": "BSD-3-Clause"
+    },
+    "node_modules/@lit/context": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/@lit/context/-/context-1.1.6.tgz",
+      "integrity": "sha512-M26qDE6UkQbZA2mQ3RjJ3Gzd8TxP+/0obMgE5HfkfLhEEyYE3Bui4A5XHiGPjy0MUGAyxB3QgVuw2ciS0kHn6A==",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@lit/reactive-element": "^1.6.2 || ^2.1.0"
+      }
+    },
+    "node_modules/@lit/reactive-element": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/@lit/reactive-element/-/reactive-element-2.1.2.tgz",
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+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@lit-labs/ssr-dom-shim": "^1.5.0"
+      }
+    },
+    "node_modules/@nodelib/fs.scandir": {
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@nodelib/fs.stat": "2.0.5",
+        "run-parallel": "^1.1.9"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@nodelib/fs.stat": {
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+    },
+    "node_modules/@nodelib/fs.walk": {
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+        "fast-glob": "^3.2.11",
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+}
diff --git a/renderers/markdown/markdown-it-lit/package.json b/renderers/markdown/markdown-it-lit/package.json
new file mode 100644
index 000000000..59cf91d54
--- /dev/null
+++ b/renderers/markdown/markdown-it-lit/package.json
@@ -0,0 +1,66 @@
+{
+  "name": "@a2ui/markdown-it-lit",
+  "version": "0.8.1",
+  "description": "A2UI Lit markdown renderer.",
+  "main": "./dist/src/markdown.js",
+  "types": "./dist/src/markdown.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/src/markdown.d.ts",
+      "default": "./dist/src/markdown.js"
+    }
+  },
+  "type": "module",
+  "repository": {
+    "directory": "renderers/markdown-it-lit",
+    "type": "git",
+    "url": "git+https://github.com/google/A2UI.git"
+  },
+  "files": [
+    "dist/src"
+  ],
+  "scripts": {
+    "prepack": "npm run build",
+    "build": "wireit",
+    "build:tsc": "wireit"
+  },
+  "wireit": {
+    "build": {
+      "dependencies": [
+        "build:tsc"
+      ]
+    },
+    "build:tsc": {
+      "command": "tsc -b --pretty",
+      "files": [
+        "src/**/*.ts",
+        "src/**/*.json",
+        "tsconfig.json"
+      ],
+      "output": [
+        "dist/",
+        "!dist/**/*.min.js{,.map}"
+      ],
+      "clean": "if-file-deleted"
+    }
+  },
+  "keywords": [],
+  "author": "Google",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/google/A2UI/issues"
+  },
+  "homepage": "https://github.com/google/A2UI/tree/main/web#readme",
+  "devDependencies": {
+    "@types/node": "^24.10.1",
+    "typescript": "^5.8.3",
+    "wireit": "^0.15.0-pre.2"
+  },
+  "dependencies": {
+    "@lit/context": "^1.1.4",
+    "lit": "^3.3.1",
+    "@a2ui/lit": "file:../../lit",
+    "@a2ui/markdown-it-shared": "file:../markdown-it-shared",
+    "@a2ui/web_core": "file:../../web_core"
+  }
+}
diff --git a/renderers/markdown/markdown-it-lit/prepare-publish.mjs b/renderers/markdown/markdown-it-lit/prepare-publish.mjs
new file mode 100644
index 000000000..73185139a
--- /dev/null
+++ b/renderers/markdown/markdown-it-lit/prepare-publish.mjs
@@ -0,0 +1,73 @@
+import { readFileSync, writeFileSync, copyFileSync, mkdirSync, existsSync } from 'fs';
+import { join } from 'path';
+
+// TODO: Review this script, it's copied wholesale from the lit package.
+
+// This script prepares the Lit package for publishing by:
+// 1. Copying package.json to dist/
+// 2. Updating @a2ui/web_core dependency from 'file:...' to the actual version
+// 3. Adjusting paths in package.json (main, types, exports) to be relative to dist/
+
+const dirname = import.meta.dirname;
+const corePkgPath = join(dirname, '../core/package.json');
+const litPkgPath = join(dirname, './package.json');
+const distDir = join(dirname, './dist');
+
+if (!existsSync(distDir)) {
+  mkdirSync(distDir, { recursive: true });
+}
+
+// 1. Get Core Version
+const corePkg = JSON.parse(readFileSync(corePkgPath, 'utf8'));
+const coreVersion = corePkg.version;
+if (!coreVersion) throw new Error('Cannot determine @a2ui/web_core version');
+
+// 2. Read Lit Package
+const litPkg = JSON.parse(readFileSync(litPkgPath, 'utf8'));
+
+// 3. Update Dependency
+if (litPkg.dependencies && litPkg.dependencies['@a2ui/web_core']) {
+  litPkg.dependencies['@a2ui/web_core'] = '^' + coreVersion;
+} else {
+  console.warn('Warning: @a2ui/web_core not found in dependencies.');
+}
+
+// 4. Adjust Paths for Dist
+litPkg.main = adjustPath(litPkg.main);
+litPkg.types = adjustPath(litPkg.types);
+
+if (litPkg.exports) {
+  for (const key in litPkg.exports) {
+    const exp = litPkg.exports[key];
+    if (typeof exp === 'string') {
+      litPkg.exports[key] = adjustPath(exp);
+    } else {
+      if (exp.types) exp.types = adjustPath(exp.types);
+      if (exp.default) exp.default = adjustPath(exp.default);
+      if (exp.import) exp.import = adjustPath(exp.import);
+      if (exp.require) exp.require = adjustPath(exp.require);
+    }
+  }
+}
+
+// 5. Write to dist/package.json
+writeFileSync(join(distDir, 'package.json'), JSON.stringify(litPkg, null, 2));
+
+// 6. Copy README and LICENSE
+['README.md', 'LICENSE'].forEach(file => {
+  const src = join(dirname, file);
+  if (!existsSync(src)) {
+    throw new Error(`Missing required file for publishing: ${file}`);
+  }
+  copyFileSync(src, join(distDir, file));
+});
+
+console.log(`Prepared dist/package.json with @a2ui/web_core@${coreVersion}`);
+
+// Utility function to adjustthe paths of the built files (dist/src/*) to (src/*)
+function adjustPath(p) {
+  if (p && p.startsWith('./dist/')) {
+    return './' + p.substring(7); // Remove ./dist/
+  }
+  return p;
+}
\ No newline at end of file
diff --git a/renderers/markdown/markdown-it-lit/src/markdown.ts b/renderers/markdown/markdown-it-lit/src/markdown.ts
new file mode 100644
index 000000000..0341bfef2
--- /dev/null
+++ b/renderers/markdown/markdown-it-lit/src/markdown.ts
@@ -0,0 +1,59 @@
+/*
+ Copyright 2025 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import { noChange } from "lit";
+import {
+  Directive,
+  DirectiveParameters,
+  Part,
+  directive,
+} from "lit/directive.js";
+import { unsafeHTML } from "lit/directives/unsafe-html.js";
+import { markdownRenderer } from "@a2ui/markdown-it-shared";
+
+/**
+ * A Lit directive that renders markdown to HTML.
+ *
+ * This directive is intended to be used by the A2UI Lit renderer to render
+ * markdown to HTML.
+ */
+class MarkdownDirective extends Directive {
+  private lastValue: string | null = null;
+  private lastTagClassMap: string | null = null;
+
+  update(_part: Part, [value, tagClassMap]: DirectiveParameters<this>) {
+    if (
+      this.lastValue === value &&
+      JSON.stringify(tagClassMap) === this.lastTagClassMap
+    ) {
+      return noChange;
+    }
+
+    this.lastValue = value;
+    this.lastTagClassMap = JSON.stringify(tagClassMap);
+    return this.render(value, tagClassMap);
+  }
+
+  /**
+   * Renders the markdown string to HTML.
+   */
+  render(value: string, tagClassMap?: Record<string, string[]>) {
+    const htmlString = markdownRenderer.render(value, tagClassMap);
+    return unsafeHTML(htmlString);
+  }
+}
+
+export const markdown = directive(MarkdownDirective);
diff --git a/renderers/markdown/markdown-it-lit/tsconfig.json b/renderers/markdown/markdown-it-lit/tsconfig.json
new file mode 100644
index 000000000..f928e3840
--- /dev/null
+++ b/renderers/markdown/markdown-it-lit/tsconfig.json
@@ -0,0 +1,35 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+
+  "compilerOptions": {
+    "composite": true,
+    "declaration": true,
+    "declarationMap": true,
+    "incremental": true,
+    "forceConsistentCasingInFileNames": true,
+    "inlineSources": false,
+    // "allowJs": true,
+    "preserveWatchOutput": true,
+    "sourceMap": true,
+    "target": "es2022",
+    "module": "esnext",
+    "lib": ["es2023", "DOM", "DOM.Iterable"],
+    "skipLibCheck": true,
+    "useDefineForClassFields": false,
+    "rootDir": ".",
+    "outDir": "dist",
+    "tsBuildInfoFile": "dist/.tsbuildinfo",
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": false,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["src/**/*.ts", "src/**/*.json"]
+}
diff --git a/renderers/markdown/markdown-it-shared/.npmrc b/renderers/markdown/markdown-it-shared/.npmrc
new file mode 100644
index 000000000..06b0eef7e
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/.npmrc
@@ -0,0 +1,2 @@
+@a2ui:registry=https://us-npm.pkg.dev/oss-exit-gate-prod/a2ui--npm/
+//us-npm.pkg.dev/oss-exit-gate-prod/a2ui--npm/:always-auth=true
diff --git a/renderers/markdown/markdown-it-shared/README.md b/renderers/markdown/markdown-it-shared/README.md
new file mode 100644
index 000000000..0c3252526
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/README.md
@@ -0,0 +1,6 @@
+Markdown renderer for A2UI using markdown-it and dompurify.
+
+This is used across all JS renderers, so the configuration is consistent. Each
+renderer has a specific facade package that uses this renderer as a dependency.
+
+End users should use the facade package for their renderer of choice. 
diff --git a/renderers/markdown/markdown-it-shared/package-lock.json b/renderers/markdown/markdown-it-shared/package-lock.json
new file mode 100644
index 000000000..5a52d0bf8
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/package-lock.json
@@ -0,0 +1,589 @@
+{
+  "name": "@a2ui/markdown-it-shared",
+  "version": "0.0.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@a2ui/markdown-it-shared",
+      "version": "0.0.1",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "markdown-it": "^14.1.0"
+      },
+      "devDependencies": {
+        "@types/markdown-it": "^14.1.2",
+        "@types/node": "^24.10.1",
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
+    "../web_core": {
+      "name": "@a2ui/web_core",
+      "version": "0.8.0",
+      "extraneous": true,
+      "license": "Apache-2.0",
+      "devDependencies": {
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
+    "node_modules/@nodelib/fs.scandir": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
+      "integrity": "sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@nodelib/fs.stat": "2.0.5",
+        "run-parallel": "^1.1.9"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/@nodelib/fs.stat": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz",
+      "integrity": "sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+    },
+    "node_modules/@nodelib/fs.walk": {
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.8.tgz",
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+      "dev": true,
+      "license": "MIT",
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+        "fastq": "^1.6.0"
+      },
+      "engines": {
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+      }
+    },
+    "node_modules/@types/linkify-it": {
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+      "resolved": "https://registry.npmjs.org/@types/linkify-it/-/linkify-it-5.0.0.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
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+      "version": "14.1.2",
+      "resolved": "https://registry.npmjs.org/@types/markdown-it/-/markdown-it-14.1.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/linkify-it": "^5",
+        "@types/mdurl": "^2"
+      }
+    },
+    "node_modules/@types/mdurl": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@types/mdurl/-/mdurl-2.0.0.tgz",
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+      "license": "MIT"
+    },
+    "node_modules/@types/node": {
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+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.10.9.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~7.16.0"
+      }
+    },
+    "node_modules/anymatch": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.3.tgz",
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+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "normalize-path": "^3.0.0",
+        "picomatch": "^2.0.4"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/argparse": {
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+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
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+      "license": "Python-2.0"
+    },
+    "node_modules/balanced-match": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-3.0.1.tgz",
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+      "dev": true,
+      "license": "MIT",
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+      "integrity": "sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/picomatch": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
+      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
+    "node_modules/proper-lockfile": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/proper-lockfile/-/proper-lockfile-4.1.2.tgz",
+      "integrity": "sha512-TjNPblN4BwAWMXU8s9AEz4JmQxnD1NNL7bNOY/AKUzyamc379FWASUhc/K1pL2noVb+XmZKLL68cjzLsiOAMaA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "graceful-fs": "^4.2.4",
+        "retry": "^0.12.0",
+        "signal-exit": "^3.0.2"
+      }
+    },
+    "node_modules/punycode.js": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/punycode.js/-/punycode.js-2.3.1.tgz",
+      "integrity": "sha512-uxFIHU0YlHYhDQtV4R9J6a52SLx28BCjT+4ieh7IGbgwVJWO+km431c4yRlREUAsAmt/uMjQUyQHNEPf0M39CA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/queue-microtask": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
+      "integrity": "sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/readdirp": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
+      "integrity": "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "picomatch": "^2.2.1"
+      },
+      "engines": {
+        "node": ">=8.10.0"
+      }
+    },
+    "node_modules/retry": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/retry/-/retry-0.12.0.tgz",
+      "integrity": "sha512-9LkiTwjUh6rT555DtE9rTX+BKByPfrMzEAtnlEtdEwr3Nkffwiihqe2bWADg+OQRjt9gl6ICdmB/ZFDCGAtSow==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 4"
+      }
+    },
+    "node_modules/reusify": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.1.0.tgz",
+      "integrity": "sha512-g6QUff04oZpHs0eG5p83rFLhHeV00ug/Yf9nZM6fLeUrPguBTkTQOdpAWWspMh55TZfVQDPaN3NQJfbVRAxdIw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "iojs": ">=1.0.0",
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/run-parallel": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
+      "integrity": "sha512-5l4VyZR86LZ/lDxZTR6jqL8AFE2S0IFLMP26AbjsLVADxHdhB/c0GUsH+y39UfCi3dzz8OlQuPmnaJOMoDHQBA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "queue-microtask": "^1.2.2"
+      }
+    },
+    "node_modules/signal-exit": {
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.7.tgz",
+      "integrity": "sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "is-number": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=8.0"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
+    "node_modules/uc.micro": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-2.1.0.tgz",
+      "integrity": "sha512-ARDJmphmdvUk6Glw7y9DQ2bFkKBHwQHLi2lsaH6PPmz/Ka9sFOBsBluozhDltWmnv9u/cF6Rt87znRTPV+yp/A==",
+      "license": "MIT"
+    },
+    "node_modules/undici-types": {
+      "version": "7.16.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
+      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/wireit": {
+      "version": "0.15.0-pre.2",
+      "resolved": "https://registry.npmjs.org/wireit/-/wireit-0.15.0-pre.2.tgz",
+      "integrity": "sha512-pXOTR56btrL7STFOPQgtq8MjAFWagSqs188E2FflCgcxk5uc0Xbn8CuLIR9FbqK97U3Jw6AK8zDEu/M/9ENqgA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "workspaces": [
+        "vscode-extension",
+        "website"
+      ],
+      "dependencies": {
+        "brace-expansion": "^4.0.0",
+        "chokidar": "^3.5.3",
+        "fast-glob": "^3.2.11",
+        "jsonc-parser": "^3.0.0",
+        "proper-lockfile": "^4.1.2"
+      },
+      "bin": {
+        "wireit": "bin/wireit.js"
+      },
+      "engines": {
+        "node": ">=18.0.0"
+      }
+    }
+  }
+}
diff --git a/renderers/markdown/markdown-it-shared/package.json b/renderers/markdown/markdown-it-shared/package.json
new file mode 100644
index 000000000..3d58a0bd4
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/package.json
@@ -0,0 +1,63 @@
+{
+  "name": "@a2ui/markdown-it-shared",
+  "version": "0.0.1",
+  "description": "A Markdown renderer using markdown-it and dompurify.",
+  "main": "./dist/src/markdown.js",
+  "types": "./dist/src/markdown.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/src/markdown.d.ts",
+      "default": "./dist/src/markdown.js"
+    }
+  },
+  "type": "module",
+  "repository": {
+    "directory": "renderers/markdown/markdown-it-shared",
+    "type": "git",
+    "url": "git+https://github.com/google/A2UI.git"
+  },
+  "files": [
+    "dist/src"
+  ],
+  "scripts": {
+    "prepack": "npm run build",
+    "build": "wireit",
+    "build:tsc": "wireit"
+  },
+  "wireit": {
+    "build": {
+      "dependencies": [
+        "build:tsc"
+      ]
+    },
+    "build:tsc": {
+      "command": "tsc -b --pretty",
+      "files": [
+        "src/**/*.ts",
+        "src/**/*.json",
+        "tsconfig.json"
+      ],
+      "output": [
+        "dist/",
+        "!dist/**/*.min.js{,.map}"
+      ],
+      "clean": "if-file-deleted"
+    }
+  },
+  "keywords": [],
+  "author": "Google",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/google/A2UI/issues"
+  },
+  "homepage": "https://github.com/google/A2UI/tree/main/web#readme",
+  "devDependencies": {
+    "@types/markdown-it": "^14.1.2",
+    "@types/node": "^24.10.1",
+    "typescript": "^5.8.3",
+    "wireit": "^0.15.0-pre.2"
+  },
+  "dependencies": {
+    "markdown-it": "^14.1.0"
+  }
+}
diff --git a/renderers/markdown/markdown-it-shared/prepare-publish.mjs b/renderers/markdown/markdown-it-shared/prepare-publish.mjs
new file mode 100644
index 000000000..73185139a
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/prepare-publish.mjs
@@ -0,0 +1,73 @@
+import { readFileSync, writeFileSync, copyFileSync, mkdirSync, existsSync } from 'fs';
+import { join } from 'path';
+
+// TODO: Review this script, it's copied wholesale from the lit package.
+
+// This script prepares the Lit package for publishing by:
+// 1. Copying package.json to dist/
+// 2. Updating @a2ui/web_core dependency from 'file:...' to the actual version
+// 3. Adjusting paths in package.json (main, types, exports) to be relative to dist/
+
+const dirname = import.meta.dirname;
+const corePkgPath = join(dirname, '../core/package.json');
+const litPkgPath = join(dirname, './package.json');
+const distDir = join(dirname, './dist');
+
+if (!existsSync(distDir)) {
+  mkdirSync(distDir, { recursive: true });
+}
+
+// 1. Get Core Version
+const corePkg = JSON.parse(readFileSync(corePkgPath, 'utf8'));
+const coreVersion = corePkg.version;
+if (!coreVersion) throw new Error('Cannot determine @a2ui/web_core version');
+
+// 2. Read Lit Package
+const litPkg = JSON.parse(readFileSync(litPkgPath, 'utf8'));
+
+// 3. Update Dependency
+if (litPkg.dependencies && litPkg.dependencies['@a2ui/web_core']) {
+  litPkg.dependencies['@a2ui/web_core'] = '^' + coreVersion;
+} else {
+  console.warn('Warning: @a2ui/web_core not found in dependencies.');
+}
+
+// 4. Adjust Paths for Dist
+litPkg.main = adjustPath(litPkg.main);
+litPkg.types = adjustPath(litPkg.types);
+
+if (litPkg.exports) {
+  for (const key in litPkg.exports) {
+    const exp = litPkg.exports[key];
+    if (typeof exp === 'string') {
+      litPkg.exports[key] = adjustPath(exp);
+    } else {
+      if (exp.types) exp.types = adjustPath(exp.types);
+      if (exp.default) exp.default = adjustPath(exp.default);
+      if (exp.import) exp.import = adjustPath(exp.import);
+      if (exp.require) exp.require = adjustPath(exp.require);
+    }
+  }
+}
+
+// 5. Write to dist/package.json
+writeFileSync(join(distDir, 'package.json'), JSON.stringify(litPkg, null, 2));
+
+// 6. Copy README and LICENSE
+['README.md', 'LICENSE'].forEach(file => {
+  const src = join(dirname, file);
+  if (!existsSync(src)) {
+    throw new Error(`Missing required file for publishing: ${file}`);
+  }
+  copyFileSync(src, join(distDir, file));
+});
+
+console.log(`Prepared dist/package.json with @a2ui/web_core@${coreVersion}`);
+
+// Utility function to adjustthe paths of the built files (dist/src/*) to (src/*)
+function adjustPath(p) {
+  if (p && p.startsWith('./dist/')) {
+    return './' + p.substring(7); // Remove ./dist/
+  }
+  return p;
+}
\ No newline at end of file
diff --git a/renderers/markdown/markdown-it-shared/src/markdown.ts b/renderers/markdown/markdown-it-shared/src/markdown.ts
new file mode 100644
index 000000000..d1a5dac23
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/src/markdown.ts
@@ -0,0 +1,38 @@
+/*
+ Copyright 2025 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import { rawMarkdownRenderer, TagClassMap } from "./raw-markdown.js";
+import { sanitizer } from "./sanitizer.js";
+
+// TODO: Do we need to export the TagClassMap type?
+
+/**
+ * A Markdown renderer using markdown-it and dompurify.
+ */
+export const markdownRenderer = {
+  /**
+   * Renders markdown to HTML.
+   * @param value The markdown code to render.
+   * @param tagClassMap A map of tag names to classes.
+   * @returns The rendered HTML as a string.
+   */
+  render: (value: string, tagClassMap?: TagClassMap) => {
+    const htmlString = rawMarkdownRenderer.render(value, tagClassMap);
+    return sanitizer.sanitize(htmlString);
+  },
+
+  // TODO: Do we need an unsanitized renderer?
+};
diff --git a/renderers/lit/src/0.8/ui/directives/markdown.ts b/renderers/markdown/markdown-it-shared/src/raw-markdown.ts
similarity index 52%
rename from renderers/lit/src/0.8/ui/directives/markdown.ts
rename to renderers/markdown/markdown-it-shared/src/raw-markdown.ts
index faf1b56a8..a17e5bf07 100644
--- a/renderers/lit/src/0.8/ui/directives/markdown.ts
+++ b/renderers/markdown/markdown-it-shared/src/raw-markdown.ts
@@ -14,20 +14,26 @@
  limitations under the License.
  */
 
-import { noChange } from "lit";
-import {
-  Directive,
-  DirectiveParameters,
-  Part,
-  directive,
-} from "lit/directive.js";
-import { unsafeHTML } from "lit/directives/unsafe-html.js";
-import MarkdownIt from "markdown-it";
-import { RenderRule } from "markdown-it/lib/renderer.mjs";
-import * as Sanitizer from "./sanitizer.js";
+import markdownit from 'markdown-it';
+import { sanitizer } from "./sanitizer";
+
+/**
+ * A map of tag names to classes to apply when rendering a tag.
+ *
+ * For example, the following TagClassMap would apply the `a2ui-paragraph` class
+ * to all `<p>` tags:
+ *
+ * `{ "p": ["a2ui-paragraph"] }`
+ */
+export type TagClassMap = Record<string, string[]>;
 
-class MarkdownDirective extends Directive {
-  #markdownIt = MarkdownIt({
+/**
+ * A pre-configured instance of markdown-it to render markdown in A2UI web.
+ *
+ * This renderer does not perform any sanitization of the outgoing HTML.
+ */
+class MarkdownItCore {
+  private markdownIt = markdownit({
     highlight: (str, lang) => {
       switch (lang) {
         case "html": {
@@ -39,28 +45,17 @@ class MarkdownDirective extends Directive {
         }
 
         default:
-          return Sanitizer.escapeNodeText(str);
+          return sanitizer.sanitize(str);
       }
     },
   });
-  #lastValue: string | null = null;
-  #lastTagClassMap: string | null = null;
 
-  update(_part: Part, [value, tagClassMap]: DirectiveParameters<this>) {
-    if (
-      this.#lastValue === value &&
-      JSON.stringify(tagClassMap) === this.#lastTagClassMap
-    ) {
-      return noChange;
-    }
-
-    this.#lastValue = value;
-    this.#lastTagClassMap = JSON.stringify(tagClassMap);
-    return this.render(value, tagClassMap);
-  }
-
-  #originalClassMap = new Map<string, RenderRule | undefined>();
-  #applyTagClassMap(tagClassMap: Record<string, string[]>) {
+  /**
+   * Applies a tag class map to the markdown-it renderer.
+   *
+   * @param tagClassMap The tag class map to apply.
+   */
+  private applyTagClassMap(tagClassMap: TagClassMap) {
     Object.entries(tagClassMap).forEach(([tag]) => {
       let tokenName;
       switch (tag) {
@@ -100,7 +95,7 @@ class MarkdownDirective extends Directive {
       }
 
       const key = `${tokenName}_open`;
-      this.#markdownIt.renderer.rules[key] = (
+      this.markdownIt.renderer.rules[key] = (
         tokens,
         idx,
         options,
@@ -118,35 +113,25 @@ class MarkdownDirective extends Directive {
     });
   }
 
-  #unapplyTagClassMap() {
-    for (const [key] of this.#originalClassMap) {
-      delete this.#markdownIt.renderer.rules[key];
-    }
-
-    this.#originalClassMap.clear();
-  }
-
   /**
-   * Renders the markdown string to HTML using MarkdownIt.
+   * Renders the markdown string to HTML using the internal MarkdownIt instance.
+   *
+   * @param tagClassMap A map of tag names to classes to apply when rendering a tag.
    *
-   * Note: MarkdownIt doesn't enable HTML in its output, so we render the
-   * value directly without further sanitization.
-   * @see https://github.com/markdown-it/markdown-it/blob/master/docs/security.md
+   * This method does not perform any sanitization of the outgoing HTML.
    */
-  render(value: string, tagClassMap?: Record<string, string[]>) {
+  render(value: string, tagClassMap?: TagClassMap) {
     if (tagClassMap) {
-      this.#applyTagClassMap(tagClassMap);
+      this.applyTagClassMap(tagClassMap);
     }
-    const htmlString = this.#markdownIt.render(value);
-    this.#unapplyTagClassMap();
-
-    return unsafeHTML(htmlString);
+    const htmlString = this.markdownIt.render(value);
+    return htmlString;
   }
 }
 
-export const markdown = directive(MarkdownDirective);
-
-const markdownItStandalone = MarkdownIt();
-export function renderMarkdownToHtmlString(value: string): string {
-  return markdownItStandalone.render(value);
-}
+/**
+ * A pre-configured instance of markdown-it to render markdown in A2UI web.
+ *
+ * This renderer does not perform any sanitization of the outgoing HTML.
+ */
+export const rawMarkdownRenderer = new MarkdownItCore();
diff --git a/renderers/markdown/markdown-it-shared/src/sanitizer.ts b/renderers/markdown/markdown-it-shared/src/sanitizer.ts
new file mode 100644
index 000000000..fcd13bcfe
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/src/sanitizer.ts
@@ -0,0 +1,24 @@
+/*
+ Copyright 2025 Google LLC
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+// TODO: Implement the DOMPurify sanitizer.
+
+/**
+ * A sanitizer that sanitizes HTML.
+ */
+export const sanitizer = {
+  sanitize: (html: string) => html,
+}
diff --git a/renderers/markdown/markdown-it-shared/tsconfig.json b/renderers/markdown/markdown-it-shared/tsconfig.json
new file mode 100644
index 000000000..f928e3840
--- /dev/null
+++ b/renderers/markdown/markdown-it-shared/tsconfig.json
@@ -0,0 +1,35 @@
+{
+  "$schema": "https://json.schemastore.org/tsconfig",
+
+  "compilerOptions": {
+    "composite": true,
+    "declaration": true,
+    "declarationMap": true,
+    "incremental": true,
+    "forceConsistentCasingInFileNames": true,
+    "inlineSources": false,
+    // "allowJs": true,
+    "preserveWatchOutput": true,
+    "sourceMap": true,
+    "target": "es2022",
+    "module": "esnext",
+    "lib": ["es2023", "DOM", "DOM.Iterable"],
+    "skipLibCheck": true,
+    "useDefineForClassFields": false,
+    "rootDir": ".",
+    "outDir": "dist",
+    "tsBuildInfoFile": "dist/.tsbuildinfo",
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": false,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["src/**/*.ts", "src/**/*.json"]
+}
diff --git a/samples/agent/adk/uv.lock b/samples/agent/adk/uv.lock
index 48cf6be77..bbba9aba0 100644
--- a/samples/agent/adk/uv.lock
+++ b/samples/agent/adk/uv.lock
@@ -52,6 +52,7 @@ requires-dist = [
 
 [package.metadata.requires-dev]
 dev = [
+    { name = "pyink", specifier = ">=24.10.0" },
     { name = "pytest", specifier = ">=9.0.2" },
     { name = "pytest-asyncio", specifier = ">=1.3.0" },
 ]
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diff --git a/samples/client/lit/contact/contact.ts b/samples/client/lit/contact/contact.ts
index 8300abe16..796a2555b 100644
--- a/samples/client/lit/contact/contact.ts
+++ b/samples/client/lit/contact/contact.ts
@@ -37,6 +37,7 @@ import { type Snackbar } from "./ui/snackbar.js";
 import { repeat } from "lit/directives/repeat.js";
 import { v0_8 } from "@a2ui/lit";
 import * as UI from "@a2ui/lit/ui";
+import { markdown } from "@a2ui/markdown-it-lit";
 
 // Demo elements.
 import "./ui/ui.js";
@@ -54,6 +55,9 @@ export class A2UIContactFinder extends SignalWatcher(LitElement) {
   @provide({ context: UI.Context.themeContext })
   accessor theme: v0_8.Types.Theme = uiTheme;
 
+  @provide({ context: UI.Context.markdown })
+  accessor #markdown = markdown;
+
   @state()
   accessor #requesting = false;
 
diff --git a/samples/client/lit/contact/package.json b/samples/client/lit/contact/package.json
index 58da6a441..fcfd6e017 100644
--- a/samples/client/lit/contact/package.json
+++ b/samples/client/lit/contact/package.json
@@ -77,6 +77,7 @@
   "dependencies": {
     "@a2a-js/sdk": "^0.3.4",
     "@a2ui/lit": "file:../../../../renderers/lit",
+    "@a2ui/markdown-it-lit": "file:../../../../renderers/markdown-it-lit",
     "@lit-labs/signals": "^0.1.3",
     "@lit/context": "^1.1.4",
     "lit": "^3.3.1"
diff --git a/samples/client/lit/contact/theme/theme.ts b/samples/client/lit/contact/theme/theme.ts
index e9aef950b..67f8a41b0 100644
--- a/samples/client/lit/contact/theme/theme.ts
+++ b/samples/client/lit/contact/theme/theme.ts
@@ -83,6 +83,12 @@ const h3 = {
   "typography-sz-ts": true,
 };
 
+const h5 = {
+  ...heading,
+  "layout-mt-2": true, // To align with the icons
+  "typography-sz-bm": true,
+};
+
 const iframe = {
   "behavior-sw-n": true,
 };
@@ -166,6 +172,7 @@ const buttonLight = v0_8.Styles.merge(button, { "color-c-n100": true });
 const h1Light = v0_8.Styles.merge(h1, { "color-c-n5": true });
 const h2Light = v0_8.Styles.merge(h2, { "color-c-n5": true });
 const h3Light = v0_8.Styles.merge(h3, { "color-c-n5": true });
+const h5Light = v0_8.Styles.merge(h5, { "color-c-n5": true });
 const bodyLight = v0_8.Styles.merge(body, { "color-c-n5": true });
 const pLight = v0_8.Styles.merge(p, { "color-c-n60": true });
 const preLight = v0_8.Styles.merge(pre, { "color-c-n35": true });
@@ -438,7 +445,7 @@ export const theme: v0_8.Types.Theme = {
     h2: h2Light,
     h3: h3Light,
     h4: {},
-    h5: {},
+    h5: h5Light,
     iframe,
     input: inputLight,
     p: pLight,
@@ -452,7 +459,7 @@ export const theme: v0_8.Types.Theme = {
     h2: [...Object.keys(h2Light)],
     h3: [...Object.keys(h3Light)],
     h4: [],
-    h5: [],
+    h5: [...Object.keys(h5Light)],
     ul: [...Object.keys(unorderedListLight)],
     ol: [...Object.keys(orderedListLight)],
     li: [...Object.keys(listItemLight)],
diff --git a/samples/client/lit/package-lock.json b/samples/client/lit/package-lock.json
index 94aeccddf..2c60e5d90 100644
--- a/samples/client/lit/package-lock.json
+++ b/samples/client/lit/package-lock.json
@@ -36,6 +36,24 @@
         "wireit": "^0.15.0-pre.2"
       }
     },
+    "../../../renderers/markdown-it-lit": {},
+    "../../../renderers/markdown/markdown-it-lit": {
+      "name": "@a2ui/markdown-it-lit",
+      "version": "0.8.1",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@a2ui/lit": "file:../../lit",
+        "@a2ui/markdown-it-shared": "file:../markdown-it-shared",
+        "@a2ui/web_core": "file:../../web_core",
+        "@lit/context": "^1.1.4",
+        "lit": "^3.3.1"
+      },
+      "devDependencies": {
+        "@types/node": "^24.10.1",
+        "typescript": "^5.8.3",
+        "wireit": "^0.15.0-pre.2"
+      }
+    },
     "contact": {
       "name": "@a2ui/contact",
       "version": "0.8.1",
@@ -43,6 +61,7 @@
       "dependencies": {
         "@a2a-js/sdk": "^0.3.4",
         "@a2ui/lit": "file:../../../../renderers/lit",
+        "@a2ui/markdown-it-lit": "file:../../../../renderers/markdown-it-lit",
         "@lit-labs/signals": "^0.1.3",
         "@lit/context": "^1.1.4",
         "lit": "^3.3.1"
@@ -55,6 +74,10 @@
         "wireit": "^0.15.0-pre.2"
       }
     },
+    "contact/node_modules/@a2ui/markdown-it-lit": {
+      "resolved": "../../../renderers/markdown-it-lit",
+      "link": true
+    },
     "node_modules/@a2a-js/sdk": {
       "version": "0.3.8",
       "resolved": "https://registry.npmjs.org/@a2a-js/sdk/-/sdk-0.3.8.tgz",
@@ -96,6 +119,10 @@
       "resolved": "../../../renderers/lit",
       "link": true
     },
+    "node_modules/@a2ui/markdown-it-lit": {
+      "resolved": "../../../renderers/markdown/markdown-it-lit",
+      "link": true
+    },
     "node_modules/@a2ui/shell": {
       "resolved": "shell",
       "link": true
@@ -2159,7 +2186,6 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -2893,6 +2919,7 @@
       "dependencies": {
         "@a2a-js/sdk": "^0.3.4",
         "@a2ui/lit": "file:../../../../renderers/lit",
+        "@a2ui/markdown-it-lit": "file:../../../../renderers/markdown/markdown-it-lit",
         "@google/genai": "^1.22.0",
         "@lit-labs/signals": "^0.1.3",
         "@lit/context": "^1.1.4",
diff --git a/samples/client/lit/package.json b/samples/client/lit/package.json
index fc5534f1b..31703cfd1 100644
--- a/samples/client/lit/package.json
+++ b/samples/client/lit/package.json
@@ -14,7 +14,8 @@
     "serve:agent:rizzcharts": "cd ../../agent/adk/rizzcharts && uv run .",
     "serve:agent:orchestrator": "cd ../../agent/adk/orchestrator && uv run .",
     "serve:shell": "cd shell && npm run dev",
-    "build:renderer": "cd ../../../renderers/web_core && npm install && npm run build && cd ../lit && npm install && npm run build",
+    "serve:contact": "cd contact && npm run dev",
+    "build:renderer": "cd ../../../renderers && for dir in 'web_core' 'markdown/markdown-it-shared' 'markdown/markdown-it-lit' 'lit'; do (cd \"$dir\" && npm install && npm run build); done",
     "demo:all": "npm install && npm run build:renderer && concurrently -k -n \"SHELL,REST,CONT1\" -c \"magenta,blue,green\" \"npm run serve:shell\" \"npm run serve:agent:restaurant\" \"npm run serve:agent:contact_lookup\"",
     "demo:restaurant": "npm install && npm run build:renderer && concurrently -k -n \"SHELL,REST\" -c \"magenta,blue\" \"npm run serve:shell\" \"npm run serve:agent:restaurant\"",
     "demo:contact": "npm install && npm run build:renderer && concurrently -k -n \"SHELL,CONT1\" -c \"magenta,green\" \"npm run serve:shell\" \"npm run serve:agent:contact_lookup\"",
diff --git a/samples/client/lit/shell/app.ts b/samples/client/lit/shell/app.ts
index 33a16cf57..8960f12af 100644
--- a/samples/client/lit/shell/app.ts
+++ b/samples/client/lit/shell/app.ts
@@ -46,6 +46,7 @@ import { AppConfig } from "./configs/types.js";
 import { config as restaurantConfig } from "./configs/restaurant.js";
 import { config as contactsConfig } from "./configs/contacts.js";
 import { styleMap } from "lit/directives/style-map.js";
+import { markdown } from "@a2ui/markdown-it-lit";
 
 const configs: Record<string, AppConfig> = {
   restaurant: restaurantConfig,
@@ -54,8 +55,11 @@ const configs: Record<string, AppConfig> = {
 
 @customElement("a2ui-shell")
 export class A2UILayoutEditor extends SignalWatcher(LitElement) {
-  @provide({ context: UI.Context.themeContext })
-  accessor theme: v0_8.Types.Theme = uiTheme;
+  @provide({ context: UI.Context.theme })
+  accessor #theme = uiTheme;
+
+  @provide({ context: UI.Context.markdown })
+  accessor #markdownRenderer = markdown;
 
   @state()
   accessor #requesting = false;
@@ -290,7 +294,7 @@ export class A2UILayoutEditor extends SignalWatcher(LitElement) {
 
     // Apply the theme directly, which will use the Lit context.
     if (this.config.theme) {
-      this.theme = this.config.theme;
+      this.#theme = this.config.theme;
     }
 
     window.document.title = this.config.title;
@@ -500,7 +504,7 @@ export class A2UILayoutEditor extends SignalWatcher(LitElement) {
               .surfaceId=${surfaceId}
               .surface=${surface}
               .processor=${this.#processor}
-            ></a2-uisurface>`;
+            ></a2ui-surface>`;
       }
     )}
     </section>`;
diff --git a/samples/client/lit/shell/package.json b/samples/client/lit/shell/package.json
index 0264f5866..9ffefb92a 100644
--- a/samples/client/lit/shell/package.json
+++ b/samples/client/lit/shell/package.json
@@ -77,10 +77,11 @@
   "dependencies": {
     "@a2a-js/sdk": "^0.3.4",
     "@a2ui/lit": "file:../../../../renderers/lit",
+    "@a2ui/markdown-it-lit": "file:../../../../renderers/markdown/markdown-it-lit",
     "@google/genai": "^1.22.0",
     "@lit-labs/signals": "^0.1.3",
     "@lit/context": "^1.1.4",
     "@types/node": "^24.7.1",
     "lit": "^3.3.1"
   }
-}
\ No newline at end of file
+}