diff --git a/okf/README.md b/okf/README.md
index 53ae20f3..d50bedd6 100644
--- a/okf/README.md
+++ b/okf/README.md
@@ -225,8 +225,23 @@ The HTML embeds the bundle as a JSON blob and uses
 both loaded from a CDN. No data leaves the page; the bundle is parsed
 once at generation time and serialized into the file.
 
+## Ecosystem & Showcase
+
+OKF is a universal, vendor-neutral format designed for broad interoperability across tools, agents, and human interfaces.
+
+### Community Tools & Integrations
+
+- **Interactive Graph Visualizer** — Self-contained HTML viewer using Cytoscape.js and Marked.js (bundled in this repo).
+- **[okf-guard](https://github.com/GoogleCloudPlatform/open-knowledge-format)** — Integrity validator and linter for OKF bundles to enforce structural and schema consistency.
+- **Knowledge Management Tooling** — Native compatibility with Obsidian, MkDocs, Notion, Hugo, and Jekyll for browsing and editing OKF bundles.
+
+### Listing Your Project
+
+Have you built an agent, exporter, linter, or visualization tool for OKF? We welcome additions! Open a pull request to add your project to this list.
+
 ## Tests
 
 ```
 .venv/bin/pytest
 ```
+
diff --git a/okf/SPEC.md b/okf/SPEC.md
index c06e3eed..09d3786a 100644
--- a/okf/SPEC.md
+++ b/okf/SPEC.md
@@ -473,7 +473,7 @@ Several fields name a path or URI: `resource`, `sources[].resource`,
 case it is not a path. Each path-valued field accepts:
 
 - an absolute URL (for example `https://...`),
-- a bundle-relative path beginning with `/`, or
+- a bundle-relative path beginning with `/` (interpreted relative to the bundle root directory, not the filesystem or host domain root), or
 - a relative path (for example `../computations/revenue.md`).
 
 ### 6.3 The `references/` convention