★ 0 stars
TypeScript
🧠 Memory/Knowledge
Updated today
Read-only MCP server for the TC39 ECMAScript specs (ECMA-262 + ECMA-402). SHA-pinned clauses, AOID-aware search, cross-spec references, edition diffs, auto-refreshing. Runs as stdio (npx) or hosted Cloudflare Worker.
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Quick Install
Copy the config for your editor. Some servers may need additional setup — check the README.
Add to claude_desktop_config.json:
{
"mcpServers": {
"tc39-mcp": {
"command": "npx",
"args": [
"-y",
"xyzzylabs/tc39-mcp"
]
}
}
}
Run in terminal:
claude mcp add tc39-mcp npx -y xyzzylabs/tc39-mcp
Add to .cursor/mcp.json:
{
"mcpServers": {
"tc39-mcp": {
"command": "npx",
"args": [
"-y",
"xyzzylabs/tc39-mcp"
]
}
}
}
README Excerpt
📖 **Docs site** (same origin as the API): [tc39-mcp.chicoxyzzy.workers.dev](https://tc39-mcp.chicoxyzzy.workers.dev) — [Tools](https://tc39-mcp.chicoxyzzy.workers.dev/tools) · [Snapshots](https://tc39-mcp.chicoxyzzy.workers.dev/snapshots) · [Architecture](https://tc39-mcp.chicoxyzzy.workers.dev/architecture) · [Deployment](https://tc39-mcp.chicoxyzzy.workers.dev/deployment) · [Changelog](https://tc39-mcp.chicoxyzzy.workers.dev/changelog)
Topics
agentsai-toolsecma262ecma402ecmascriptintljavascriptlanguage-specmcpmodel-context-protocolspecificationtc39