[ethanoroshiba]

Description

The ChatGPT distribution currently copies src/plugins/portable/mcp.json, so its generated MCP server URL is https://agents.coinbase.com/mcp instead of the ChatGPT channel endpoint, https://agents.coinbase.com/mcp/chatgpt. Its validator and an existing test also enforced that incorrect shared configuration.

• Add src/plugins/chatgpt/mcp.json and copy each distribution's MCP configuration alongside its manifest.
• Require the exact ChatGPT URL during ChatGPT validation; preserve /mcp for portable, Claude Code, and Codex.
• Validate the new source configuration in both CI workflows and document the endpoint distinction.
• Replace the shared-MCP assertion with endpoint regression coverage, including generated packages and both ChatGPT archive formats. Keep the canonical skill library and icon artwork unchanged.

Generated with Toshi

Change type

• Harness integration or metadata
• Skill workflow
• Bug fix
• Documentation
• Breaking change (describe migration)

Validation

Reproduced the bug on current main: the ChatGPT build emitted /mcp, and all 10 existing tests passed. Added regression tests failed before the builder/validator fix and passed afterward.

Passed locally:

• python3 -m unittest discover -s tests -v — 12 tests.
• uvx ruff@0.13.2 check scripts/build-distributions.py tests
• uvx ruff@0.13.2 format --check scripts/build-distributions.py tests
• check-jsonschema==0.34.1 validation against the vendored plugin and MCP schemas for both portable and ChatGPT source manifests/configurations and generated packages.
• python3 scripts/build-distributions.py dist
• shasum -a 256 --check SHA256SUMS — all eight archives passed.
• Compared the six portable, Claude, and Codex archives against a build using main's builder: byte-identical.
• git diff --check

Not run: native ChatGPT import, interactive OAuth, authenticated portfolio read, or financial operations. Static packaging validation does not establish directory approval or runtime client support.

• Generated portable manifest and MCP config validate against the vendored Agent Plugins schemas
• Package paths and skill references remain inside each generated plugin root
• Marketplace, skills, MCP, and icon paths are valid
• Exactly one canonical skill library; generated copies are not committed
• Claude compatibility metadata/endpoint and marketplace sources agree with the portable package
• Tool schemas, authorization, and retry behavior reviewed
• README and changelog updated; versions consistent
• No unapproved disclosures or sensitive data
• Signed commits

Tool schemas, authorization, and retry behavior are unchanged; authenticated runtime verification was not performed.

Release considerations

After merge, the existing Pages workflow will regenerate the unreleased 0.0.1 ChatGPT package with /mcp/chatgpt. Existing downloaded packages must be replaced with the regenerated package. Portable, Claude Code, and Codex remain on /mcp. Existing directory policy, OAuth client-support, and publisher approval requirements still apply; this endpoint correction does not authorize publication or establish policy compliance.

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1