Input schema
{}Risk classification
Inferred read-only · medium confidence · heuristic, not a guarantee.
- No write-capable action terms were found; this is not proof that invocation has no side effects.
Parent endpoint
CONNECT WITH APPROVAL
Client installation
Review this server and its permissions before adding it. Secret placeholders must be set locally.
Codex
~/.codex/config.toml
[mcp_servers.tc39-mcp]
url = "https://mcp.xyzzylabs.ai/tc39/mcp"
enabled = true
Claude Code
.mcp.json
{
"mcpServers": {
"tc39-mcp": {
"type": "http",
"url": "https://mcp.xyzzylabs.ai/tc39/mcp"
}
}
}
Claude Desktop
Settings → Connectors → Add custom connector
Name: tc39-mcp
Remote MCP URL: https://mcp.xyzzylabs.ai/tc39/mcp
Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.
Cursor
.cursor/mcp.json
{
"mcpServers": {
"tc39-mcp": {
"url": "https://mcp.xyzzylabs.ai/tc39/mcp"
}
}
}
Visual Studio Code
.vscode/mcp.json
Add to Visual Studio Code{
"servers": {
"tc39-mcp": {
"type": "http",
"url": "https://mcp.xyzzylabs.ai/tc39/mcp"
}
}
}
Generic MCP
Client-specific MCP configuration
{
"name": "tc39-mcp",
"transport": "streamable-http",
"url": "https://mcp.xyzzylabs.ai/tc39/mcp"
}
MCP Inspector
Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.
Related tools
spec.about— Self-description of this MCP server: package name + version, per-snapshot pin metadata (sha, fetched_at, biblio_commit, clause_count) for every supported (spec, edition), plus test262 + proposals index headers when present.clause.get— Fetch a parsed TC39 clause as structured JSON.clause.list— List parsed spec clauses with optional filters (kind, section prefix, has_algorithm).spec.search— Search the parsed spec by clause id / aoid / title (+ step text with `search_steps`).proposal.list— List TC39 proposals from the static index (tc39/proposals).proposal.get— Fetch one TC39 proposal by slug (exact) or name (case-insensitive).spec.grammar— Query grammar productions captured from the spec's `<emu-grammar>` blocks.spec.tables— List or fetch parsed `<emu-table>` content.