TL;DR
tc39-mcp is a Model Context Protocol (MCP) server. Independent MCP server for the TC39 specs (ECMA-262 + ECMA-402): clauses, search, diffs, history. Install with: npx -y tc39-mcp. Source: https://github.com/xyzzylabs/tc39-mcp. It speaks the Model Context Protocol and works with any compatible client (Claude, Cursor, Cline, Windsurf, Warp and more).
tc39-mcp
Independent MCP server for the TC39 specs (ECMA-262 + ECMA-402): clauses, search, diffs, history.
Install Command
npx -y tc39-mcpFrequently Asked Questions
tc39-mcp is a Model Context Protocol server that Independent MCP server for the TC39 specs (ECMA-262 + ECMA-402): clauses, search, diffs, history.
You can install it by running the install command: `npx -y tc39-mcp`. It then becomes available to any MCP-compatible client such as Claude, Cursor, Cline, Windsurf.
The tc39-mcp MCP Server is compatible with any client that speaks the Model Context Protocol — including Claude, Cursor, Cline, Windsurf.
Check the project license on its repository before use.
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Details
- Agent Rank
- 27.0
- License
- Last Updated
- Aug 12, 2026
- Languages
- TypeScript
Client Compatibility
Speaks the Model Context Protocol — works with any compatible client.