tc39-mcp MCP Tools

• spec.about

  spec about

• clause.get

  clause get

• clause.list

  clause list

• spec.search

  spec search

• proposal.list

  proposal list

• proposal.get

  proposal get

• spec.grammar

  spec grammar

• spec.tables

  spec tables

• spec.sdo_index

  spec sdo index

• clause.outline

  clause outline

• spec.global_search

  spec global search

• spec.snapshots

  spec snapshots

• spec.symbol_resolve

  spec symbol resolve

• spec.well_known_intrinsics

  spec well known intrinsics

• spec.diff

  spec diff

• spec.crossrefs

  spec crossrefs

• test262.search

  test262 search

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.