diff --git a/examples/notion-essay-pr/notion-essay-pr.smoke.test.ts b/examples/notion-essay-pr/notion-essay-pr.smoke.test.ts
index 033f612c..7448ea78 100644
--- a/examples/notion-essay-pr/notion-essay-pr.smoke.test.ts
+++ b/examples/notion-essay-pr/notion-essay-pr.smoke.test.ts
@@ -190,6 +190,29 @@ class MockNotionEssayRuntime {
         read: (filePath) => this.read(filePath),
         write: (filePath, contents) => this.write(filePath, contents)
       },
+      credentials: {
+        relayfile: {
+          url: 'https://relayfile.example.test',
+          token: 'relayfile-token',
+          workspaceId: 'rw_proactive'
+        },
+        cloudApi: {
+          url: 'https://cloud.example.test',
+          token: 'cloud-api-token'
+        },
+        tryRequire() {
+          return {
+            relayfile: this.relayfile,
+            cloudApi: this.cloudApi
+          };
+        },
+        require() {
+          return {
+            relayfile: this.relayfile,
+            cloudApi: this.cloudApi
+          };
+        }
+      },
       memory: {
         async recall() {
           return [{
diff --git a/packages/runtime/src/ctx.test.ts b/packages/runtime/src/ctx.test.ts
index 45fb3dc0..51c3ac79 100644
--- a/packages/runtime/src/ctx.test.ts
+++ b/packages/runtime/src/ctx.test.ts
@@ -159,6 +159,80 @@ test('buildCtx exposes ctx.files as a sandbox file helper', async () => {
   assert.deepEqual(writes, [{ path: '/workspace/output/page-1.md', contents: 'essay' }]);
 });
 
+test('buildCtx exposes typed runtime credentials from sandbox env', async () => {
+  await withEnv(
+    {
+      RELAYFILE_URL: 'https://relayfile.example.test',
+      RELAYFILE_TOKEN: 'relayfile-token',
+      RELAYFILE_WORKSPACE_ID: 'rw_test',
+      CLOUD_API_URL: 'https://cloud.example.test',
+      CLOUD_API_ACCESS_TOKEN: 'cloud-api-token'
+    },
+    async () => {
+      const ctx = ctxFor(basePersona);
+      const expected = {
+        relayfile: {
+          url: 'https://relayfile.example.test',
+          token: 'relayfile-token',
+          workspaceId: 'rw_test'
+        },
+        cloudApi: {
+          url: 'https://cloud.example.test',
+          token: 'cloud-api-token'
+        }
+      };
+
+      assert.deepEqual(ctx.credentials.tryRequire(), expected);
+      assert.deepEqual(ctx.credentials.require(), expected);
+      assert.deepEqual(ctx.credentials.relayfile, expected.relayfile);
+      assert.deepEqual(ctx.credentials.cloudApi, expected.cloudApi);
+    }
+  );
+});
+
+test('ctx.credentials returns null or throws with missing runtime credential keys', async () => {
+  await withEnv(
+    {
+      RELAYFILE_URL: 'https://relayfile.example.test',
+      RELAYFILE_TOKEN: undefined,
+      RELAYFILE_WORKSPACE_ID: 'rw_test',
+      CLOUD_API_URL: 'https://cloud.example.test',
+      CLOUD_API_ACCESS_TOKEN: 'cloud-api-token'
+    },
+    async () => {
+      const ctx = ctxFor(basePersona);
+
+      assert.equal(ctx.credentials.tryRequire(), null);
+      assert.throws(
+        () => ctx.credentials.require(),
+        /Runtime credentials are required: missing relayfile\.token/
+      );
+      assert.throws(
+        () => ctx.credentials.relayfile,
+        /Runtime credentials are required: missing relayfile\.token/
+      );
+    }
+  );
+});
+
+test('ctx.credentials strips trailing slashes from runtime credential URLs', async () => {
+  await withEnv(
+    {
+      RELAYFILE_URL: 'https://relayfile.example.test///',
+      RELAYFILE_TOKEN: 'relayfile-token',
+      RELAYFILE_WORKSPACE_ID: 'rw_test',
+      CLOUD_API_URL: 'https://cloud.example.test/',
+      CLOUD_API_ACCESS_TOKEN: 'cloud-api-token'
+    },
+    async () => {
+      const ctx = ctxFor(basePersona);
+
+      assert.equal(ctx.credentials.require().relayfile.url, 'https://relayfile.example.test');
+      assert.equal(ctx.credentials.require().cloudApi.url, 'https://cloud.example.test');
+    }
+  );
+});
+
 test('ctx.memory.save posts to the cloud memory endpoint when sandbox env is present', async () => {
   await withEnv(
     {
diff --git a/packages/runtime/src/ctx.ts b/packages/runtime/src/ctx.ts
index 753af8c9..daa3b986 100644
--- a/packages/runtime/src/ctx.ts
+++ b/packages/runtime/src/ctx.ts
@@ -3,7 +3,9 @@ import type {
   LlmContext,
   MemoryContext,
   FilesContext,
+  CredentialsContext,
   MemoryItem,
+  RequiredRuntimeCredentials,
   ScheduleContext,
   SandboxContext,
   WorkforceAgentContext,
@@ -138,6 +140,7 @@ export function buildCtx(options: CtxBuildOptions): WorkforceCtx {
     harness: { run: options.harnessRunner },
     sandbox: options.sandbox,
     files,
+    credentials: credentialsFromEnv(),
     memory: options.memory ?? defaultMemoryFor(options.persona.memory, options.workspaceId, log),
     workflow: options.workflow ?? UNAVAILABLE_WORKFLOW,
     schedule: options.schedule ?? UNAVAILABLE_SCHEDULE,
@@ -179,6 +182,7 @@ const CORE_CTX_FIELDS: ReadonlySet<string> = new Set([
   'harness',
   'sandbox',
   'files',
+  'credentials',
   'memory',
   'workflow',
   'schedule',
@@ -196,6 +200,69 @@ function filesFromSandbox(sandbox: SandboxContext): FilesContext {
   };
 }
 
+function credentialsFromEnv(processEnv: NodeJS.ProcessEnv = process.env): CredentialsContext {
+  return {
+    get relayfile() {
+      return requireRuntimeCredentials(processEnv).relayfile;
+    },
+    get cloudApi() {
+      return requireRuntimeCredentials(processEnv).cloudApi;
+    },
+    tryRequire() {
+      const snapshot = readRuntimeCredentialSnapshot(processEnv);
+      return snapshot.missing.length > 0 ? null : snapshot.credentials;
+    },
+    require() {
+      return requireRuntimeCredentials(processEnv);
+    }
+  };
+}
+
+function requireRuntimeCredentials(processEnv: NodeJS.ProcessEnv): RequiredRuntimeCredentials {
+  const snapshot = readRuntimeCredentialSnapshot(processEnv);
+  if (snapshot.missing.length > 0) {
+    throw new Error(`Runtime credentials are required: missing ${snapshot.missing.join(', ')}`);
+  }
+  return snapshot.credentials;
+}
+
+function readRuntimeCredentialSnapshot(processEnv: NodeJS.ProcessEnv): {
+  credentials: RequiredRuntimeCredentials;
+  missing: string[];
+} {
+  const relayfileUrl = normalizeOptionalUrl(firstNonEmpty(processEnv.RELAYFILE_URL));
+  const relayfileToken = firstNonEmpty(processEnv.RELAYFILE_TOKEN);
+  const relayfileWorkspaceId = firstNonEmpty(processEnv.RELAYFILE_WORKSPACE_ID);
+  const cloudApiUrl = normalizeOptionalUrl(firstNonEmpty(processEnv.CLOUD_API_URL));
+  const cloudApiToken = firstNonEmpty(processEnv.CLOUD_API_ACCESS_TOKEN);
+  const missing = [
+    ...(!relayfileUrl ? ['relayfile.url'] : []),
+    ...(!relayfileToken ? ['relayfile.token'] : []),
+    ...(!relayfileWorkspaceId ? ['relayfile.workspaceId'] : []),
+    ...(!cloudApiUrl ? ['cloudApi.url'] : []),
+    ...(!cloudApiToken ? ['cloudApi.token'] : [])
+  ];
+
+  return {
+    credentials: {
+      relayfile: {
+        url: relayfileUrl ?? '',
+        token: relayfileToken ?? '',
+        workspaceId: relayfileWorkspaceId ?? ''
+      },
+      cloudApi: {
+        url: cloudApiUrl ?? '',
+        token: cloudApiToken ?? ''
+      }
+    },
+    missing
+  };
+}
+
+function normalizeOptionalUrl(value: string | undefined): string | undefined {
+  return value ? normalizeBaseUrl(value) : undefined;
+}
+
 function defaultMemoryFor(
   memoryConfig: PersonaSpec['memory'],
   workspaceId: string,
diff --git a/packages/runtime/src/index.ts b/packages/runtime/src/index.ts
index 6f760c8b..d4711b9f 100644
--- a/packages/runtime/src/index.ts
+++ b/packages/runtime/src/index.ts
@@ -6,12 +6,16 @@ export { handler, isWorkforceHandler } from './handler.js';
 export type {
   HarnessRunArgs,
   HarnessRunResult,
+  CloudApiCredentials,
+  CredentialsContext,
   FilesContext,
   LlmContext,
   MemoryContext,
   MemoryItem,
   MemoryRecallOptions,
   MemorySaveOptions,
+  RelayfileCredentials,
+  RequiredRuntimeCredentials,
   SandboxContext,
   SandboxExecArgs,
   SandboxExecResult,
diff --git a/packages/runtime/src/types.ts b/packages/runtime/src/types.ts
index 4953a6c3..1a12a8bc 100644
--- a/packages/runtime/src/types.ts
+++ b/packages/runtime/src/types.ts
@@ -120,6 +120,29 @@ export interface FilesContext {
   write(path: string, contents: string): Promise<void>;
 }
 
+export interface RelayfileCredentials {
+  url: string;
+  token: string;
+  workspaceId: string;
+}
+
+export interface CloudApiCredentials {
+  url: string;
+  token: string;
+}
+
+export interface RequiredRuntimeCredentials {
+  relayfile: RelayfileCredentials;
+  cloudApi: CloudApiCredentials;
+}
+
+export interface CredentialsContext {
+  readonly relayfile: RelayfileCredentials;
+  readonly cloudApi: CloudApiCredentials;
+  tryRequire(): RequiredRuntimeCredentials | null;
+  require(): RequiredRuntimeCredentials;
+}
+
 export interface MemorySaveOptions {
   tags?: string[];
   scope?: PersonaMemoryScope;
@@ -220,6 +243,8 @@ export interface WorkforceCtx {
   sandbox: SandboxContext;
   /** Relayfile/sandbox file helpers for handlers that should not shell out. */
   files: FilesContext;
+  /** Runtime credentials populated by the cloud persona launcher. */
+  credentials: CredentialsContext;
   /** Persistent memory (no-op when persona.memory is false or unset). */
   memory: MemoryContext;
   /** Cloud workflows invocation (HTTP). */