Cross-vendor agent/plugin spec sources
Staged 2026-08-11 for the Patterson agent-platform project.
Fetch method: web_fetch only (no curl/wget/python, per task rules).
Fetched and staged
Section titled “Fetched and staged”| Source URL | Local path | Spec version / revision | Status |
|---|---|---|---|
| https://agent-plugins.org/specification.md | agent-plugins/specification.md |
1.0.0 (Working Draft) | COMPLETE — content identical to 2026-08-10 baseline |
| https://agent-plugins.org/manifest.md | agent-plugins/manifest.md |
1.0.0 | COMPLETE |
| https://agent-plugins.org/schemas/1.0.0/plugin.schema.json | agent-plugins/plugin.schema.json |
1.0.0 | COMPLETE, verbatim |
| https://agent-plugins.org/schemas/1.0.0/mcp.schema.json | agent-plugins/mcp.schema.json |
1.0.0 | COMPLETE, verbatim |
| https://agentskills.io/specification.md | agent-skills/specification.md |
(unversioned) | COMPLETE — identical to baseline |
| https://agentskills.io/llms.txt | agent-skills/llms.txt |
n/a | COMPLETE, verbatim |
| https://agentskills.io/client-implementation/adding-skills-support.md | summarized in agent-skills/README.md |
n/a | fetched COMPLETE; key rules extracted, full text not staged |
| https://modelcontextprotocol.io/specification/2026-07-28/changelog.md | mcp/CHANGELOG-2026-07-28.md |
2026-07-28 | COMPLETE, verbatim |
| …/modelcontextprotocol/main/schema/2026-07-28/schema.json | mcp/schema.json |
2026-07-28 | PARTIAL FETCH — see caveat below; file on disk is the complete 2026-08-10 baseline copy |
| …/registry/main/docs/reference/server-json/draft/server.schema.json | mcp/registry-server.schema.json |
draft (registry in preview) | COMPLETE, verbatim |
| https://modelcontextprotocol.io/registry/about.md | summarized in mcp/README.md |
n/a | fetched COMPLETE |
| https://modelcontextprotocol.io/extensions/apps/overview.md | summarized in mcp-apps/README.md |
ext spec 2026-01-26 | fetched COMPLETE |
github.com/modelcontextprotocol/ext-apps specification/2026-01-26/apps.mdx |
mcp-apps/ext-apps-spec.md + spec.types.ts + patterns.md + csp-cors.md |
2026-01-26 | COMPLETE (baseline copy, re-verified) |
Fetched for comparison only (not staged here)
Section titled “Fetched for comparison only (not staged here)”| Source URL | Purpose | Status |
|---|---|---|
| https://docs.claude.com/en/docs/claude-code/plugins-reference.md | Claude Code plugin.json schema |
fetched; response exceeded tool size cap, read the manifest-schema section (lines 409–540) |
| https://docs.claude.com/en/docs/claude-code/plugin-marketplaces.md | Claude Code marketplace.json schema |
fetched; response exceeded tool size cap, read the schema sections (lines 120–230) |
| https://modelcontextprotocol.io/llms.txt | index; confirms 2026-07-28 is latest |
COMPLETE |
| https://agent-plugins.org/llms.txt | index | COMPLETE (72 KB, read in part) |
Failures / blocked
Section titled “Failures / blocked”| Source URL | Problem |
|---|---|
.../schema/2026-07-28/schema.json |
web_fetch truncates at ~132 KB. Upstream is ~181 KB / 3963 lines / 155 $defs; got 2893 lines / 118 $defs, cut mid-object. Rules forbid curl/wget, so no complete verbatim copy today. Verified the returned prefix matches the baseline exactly. |
.../schema/draft/schema.json |
Same truncation. Confirmed same size/shape as the 2026-07-28 schema — no diverged draft revision exists yet. |
| https://api.github.com/repos/modelcontextprotocol/modelcontextprotocol/contents/schema | Returned an empty body (likely rate-limited/blocked unauthenticated). Could not enumerate schema revision directories. |
| https://agentskills.io/clients.md | Returns a JS shell — a React ClientShowcase component. No prose spec content. |
| https://agent-plugins.org/clients.md | Same — renders via <CompatibleClients />, so the client-conformance matrix is not available as text. Could not determine which clients formally claim Agent Plugins 1.0.0 conformance. |
Drift vs the 2026-08-10 baseline
Section titled “Drift vs the 2026-08-10 baseline”Baseline: .tmp/staging/scaffold/agent-platform-scaffold/templates/agent-platform-docs/references/specs/
| Spec | Baseline pin | Today | Drift |
|---|---|---|---|
| agent-skills | site, 2026-08-10 | site, 2026-08-11 | None |
| agent-plugins | site, 2026-08-10 | site, 2026-08-11 | None |
| mcp | b25c087, schema 2026-07-28 | schema 2026-07-28 | None detected (prefix-verified only, see caveat) |
| mcp-apps | ext-apps 92f46a5, spec 2026-01-26 | spec 2026-01-26 | None |
| acp | zed-industries 878dfd2, schema v2 | not re-fetched | not checked (out of scope this pass) |
| ahp | microsoft 101f873 | not re-fetched | not checked |
| a2ui | a2ui-project 1a07c47, v0.9.1 | not re-fetched | not checked |
New material staged today that the baseline did not have:
agent-plugins/plugin.schema.jsonandagent-plugins/mcp.schema.json(baseline had prose only, no machine-readable schemas)mcp/CHANGELOG-2026-07-28.mdmcp/registry-server.schema.json(MCP Registryserver.jsonformat)