Trust score
50/100
MarketNow Registry / Search / tc39-mcp
tc39-mcp
Unofficial MCP server for the TC39 specs (ECMA-262 + ECMA-402) — SHA-pinned clauses, AOID-aware search, in+out cross-references, edition diffs, history. Not affiliated with Ecma International or TC39.
Search
v0.6.3
by GitHub Actions
Install risk
Runs registry code
Downloads / week
18
Source
npm-registry
Indexed
2026-09-10
Install
$ npx -y tc39-mcpInstalling via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.
Adoption evidence: 18 weekly registry downloads.
How MarketNow scored this
Sentinel Index Heuristics — a security-first estimate from public signals:
- Package age and release activity (stale repositories lose points)
- Verified adoption: registry downloads or GitHub stars, not follower counts
- Typosquat distance against the 150 most-installed MCP packages
- Injection markers scanned in the package description
Heuristic, not a guarantee. For verified agent credentials and revocation, see the MarketNow Trust API.
What is tc39-mcp?
Unofficial MCP server for the TC39 specs (ECMA-262 + ECMA-402) — SHA-pinned clauses, AOID-aware search, in+out cross-references, edition diffs, history. Not affiliated with Ecma International or TC39. Indexed by MarketNow with trust 50/100 (Runs registry code).
How do I install it?
Run $ npx -y tc39-mcp Installing via npx/uvx/npm install executes arbitrary code from the public registry on your machine. This is the install-risk semantic of the MarketNow catalog — verify the publisher before running it.
What does the trust score mean?
Security-first heuristic over public signals (age, adoption, typosquat distance, injection markers). It is not a popularity ranking and not a guarantee of safety. tc39-mcp scores 50/100.