SERVER

tc39-mcp

Rank #3,915

io.github.xyzzylabs/tc39-mcp

Independent MCP server for the TC39 specs (ECMA-262 + ECMA-402): clauses, search, diffs, history.

17 versions

2 GitHub stars

by xyzzylabs (2 servers)View repository ↗Claim this server

First listed

May 30, 2026

Last publish date

Sep 8, 2026

OVERVIEW

tc39-mcp is a Model Context Protocol (MCP) server published by xyzzylabs. It ranks #3,915 of 132,113 servers tracked on MCP Toplist, and its repository has 2 GitHub stars. tc39-mcp is listed across 3 registries — Official MCP, PulseMCP and Glama, with 17 tracked versions. It was first listed on May 30, 2026 and most recently updated on Sep 8, 2026.

STANDING

#3,915of 132,113 tracked serversTop 5%

Ranks ahead of 128,198 of 132,113 servers on MCP Toplist.

CONNECT

Use tc39-mcp

No setupRuns out of the box

No credentials or required configuration declared — add it to your MCP client and go.

Remote · HTTP

claude mcp add --transport http tc39-mcp https://mcp.xyzzylabs.ai/tc39/mcp

npm package

claude mcp add tc39-mcp -- npx -y tc39-mcp

Remote · HTTP

[mcp_servers.tc39-mcp]
url = "https://mcp.xyzzylabs.ai/tc39/mcp"

Add to ~/.codex/config.toml.

npm package

[mcp_servers.tc39-mcp]
command = "npx"
args = ["-y", "tc39-mcp"]

Add to ~/.codex/config.toml.

Remote · HTTP

https://mcp.xyzzylabs.ai/tc39/mcp

Settings → Connectors → “Add custom connector”, then paste this URL.

npm package

{
  "mcpServers": {
    "tc39-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "tc39-mcp"
      ]
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config).

Remote · HTTP

{
  "mcpServers": {
    "tc39-mcp": {
      "url": "https://mcp.xyzzylabs.ai/tc39/mcp"
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

npm package

{
  "mcpServers": {
    "tc39-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "tc39-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

Remote · HTTP

{
  "servers": {
    "tc39-mcp": {
      "type": "http",
      "url": "https://mcp.xyzzylabs.ai/tc39/mcp"
    }
  }
}

Save as .vscode/mcp.json in your workspace.

npm package

{
  "servers": {
    "tc39-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "tc39-mcp"
      ]
    }
  }
}

Save as .vscode/mcp.json in your workspace.

Remote · HTTP

{
  "mcpServers": {
    "tc39-mcp": {
      "serverUrl": "https://mcp.xyzzylabs.ai/tc39/mcp"
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

npm package

{
  "mcpServers": {
    "tc39-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "tc39-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Remote · HTTP

{
  "mcpServers": {
    "tc39-mcp": {
      "url": "https://mcp.xyzzylabs.ai/tc39/mcp"
    }
  }
}

npm package

{
  "mcpServers": {
    "tc39-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "tc39-mcp"
      ]
    }
  }
}

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.xyzzylabs%2Ftc39-mcp.svg)](https://mcptoplist.com/server/io.github.xyzzylabs%2Ftc39-mcp)

HTML

<a href="https://mcptoplist.com/server/io.github.xyzzylabs%2Ftc39-mcp"><img src="https://mcptoplist.com/badge/io.github.xyzzylabs%2Ftc39-mcp.svg" alt="MCP Toplist: Top 5% of 132,113" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

REGISTRIES

Listed on 3 registries

Official MCP

PulseMCP

Glama

ORGANIZATION

xyzzylabs

Organization

xyzzylabs

Servers in org

Versions across org

Other servers by xyzzylabs

wasm-mcp#4,553 · 18 vers

View all xyzzylabs servers →

VERSIONS

Available versions (17)

Version	Published
0.6.3	Sep 8, 2026
0.6.2	Aug 7, 2026
0.6.1	Jul 7, 2026
0.6.0	Jun 29, 2026
0.5.0	Jun 28, 2026
0.4.1	Jun 25, 2026
0.4.0	Jun 6, 2026
0.3.1	Jun 5, 2026
0.3.0	Jun 3, 2026
0.2.0	Jun 3, 2026
0.1.9	Jun 2, 2026
0.1.8	Jun 2, 2026
0.1.7	Jun 2, 2026
0.1.6	Jun 2, 2026
0.1.5	Jun 2, 2026
0.1.4	Jun 1, 2026
0.1.3	May 31, 2026

FAQ

Frequently asked questions

Who maintains tc39-mcp?: tc39-mcp is maintained by xyzzylabs, which publishes 2 MCP servers (35 total versions) tracked on MCP Toplist.
Is tc39-mcp listed on the Official MCP Registry?: Yes — tc39-mcp is listed on the Official MCP Registry, alongside PulseMCP and Glama.
How many versions does tc39-mcp have?: MCP Toplist tracks 17 versions of tc39-mcp, most recently published on Sep 8, 2026.
Where can I find the source code for tc39-mcp?: The source code for tc39-mcp is hosted at github.com/xyzzylabs/tc39-mcp.

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