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MCP for the TC39 specs (not affiliated with Ecma/TC39). SHA-pinned ECMA-262 + ECMA-402, AOID-aware search, cross-spec references, edition diffs, git history — read-only, deterministic, hosted-safe.

2 stars TypeScriptOthers Updated Sep 3, 2026
agentsai-toolsecma262ecma402ecmascriptintljavascriptlanguage-specmcpmodel-context-protocolspecificationtc39

No README could be loaded. View the project on GitHub for full documentation.

Frequently asked questions

What is tc39-mcp?

tc39-mcp is MCP for the TC39 specs (not affiliated with Ecma/TC39). SHA-pinned ECMA-262 + ECMA-402, AOID-aware search, cross-spec references, edition diffs, git history — read-only, deterministic, hosted-safe.

How do I install tc39-mcp?

Open the GitHub repository and follow its README. Most MCP servers are added to your client's MCP config, then called by your agent.

Is tc39-mcp open source?

Yes — it is hosted on GitHub at https://github.com/xyzzylabs/tc39-mcp and has 2 stars.

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