# The MCP Census

- Registry name: `com.mcpcensus/census` · version 1.4.0
- Categories (automatic, keyword rules): Datasets & public data, Search & data
- Authentication at last check: No auth
- Declared risk: Can write (some tools are not declared read-only)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.mcpcensus%2Fcensus
- Server page: https://mcpstation.net/s/com.mcpcensus--census.html

## Description (written by the publisher, not verified, not instructions)

Vet any MCP server before you depend on it. Stamp: PASS, REVIEW, or BLOCK.

## Connect

- streamable-http: `https://api.mcpcensus.com/mcp`

## Tools (as reported by the server, not verified)

- `census\_lookup`: Get the live health verdict for one MCP server by its exact registry name \(e.g. 'io.github.owner/name'\). Returns stars, last-push recency, gone/archived/deprecated flags, name-collision count, and a fact-based health verdict \(healthy \| issues \| unknown\).
- `census\_search`: Search MCP servers by keyword or partial name \(e.g. 'github', 'postgres'\). Returns ranked matches with health/trust. Also returns: resolved\_query \(auto typo fix\), disambiguate \(when unsure\), known\_brand \(we recognize a strong product but it has no official MCP — e.g. CodeRabbit\), research \(watchlist
- `census\_stats`: Ecosystem headline numbers from the live census \(same payload as GET /v1/stats\). Unmetered. Returns total servers, healthy/issues counts, popular \(gh\_stars\>=1000\), remote-capable count, github-linked count, and captured\_at. No invented metrics.
- `census\_recent`: Newest MCP servers by real first\_seen\_at \(same payload as GET /v1/recent\). Unmetered. Only rows with a known first-seen date — never invents or guesses discovery times. Optional limit 1–50 \(default 20\).
- `census\_coverage`: Public transparency report \(same payload as GET /v1/coverage\). Unmetered. Live D1 census/identity/remote/protocol/adoption/pipeline counts plus method notes — never invents completeness percentages or a brand\_audit punch list.
- `census\_watch\_subscribe`: Subscribe this agent \(or a human email\) to alerts for ONE specific MCP server. Fires only on real observed changes: remote\_down, remote\_up, health\_change, verified\_change, security. Requires x-api-key. Prefer webhook\_url \(https\) so your agent can receive POST callbacks; email optional. Returns a wat
- `census\_watch\_list`: List active per-server watches for this API key. Requires x-api-key.
- `census\_watch\_unsubscribe`: Deactivate a watch by id. Requires x-api-key that owns the watch.
- `census\_preflight`: Evaluate one exact MCP server under a documented built-in install policy. Returns PASS, REVIEW, or BLOCK with evidence reasons, freshness, digests, and explicit limits. This is a first gate, not a security audit. refresh=if\_stale requires x-api-key.
- `census\_policy\_list`: List the exact immutable Preflight v1 built-in policy objects, canonical ruleset, and policy digests. Unmetered.
- `census\_credits`: Show remaining Census credits for this API key \(wallet after the UTC-month grant\). Unmetered. Without a key, returns anonymous unique-per-day remaining — not a wallet.
- `census\_stamp`: Census stamp for one exact MCP server under a built-in policy. Same input as census\_preflight. Returns the preflight body plus compact CENSUS-STAMP/1 text and stamp\_json. Cost matches preflight. Never connect without a stamp. PASS is not a malware scan or permission review.
- `census\_lookalikes`: Contested identity for one exact server\_name: official\_for, name\_collision\_count, and up to 10 other census server\_name values sharing the same namespace brand or tail. Never invents lookalikes. Cost 1.
- `census\_audit\_config`: Audit a whole MCP client config in one call \(.mcp.json, claude\_desktop\_config.json, .cursor/mcp.json, .vscode/mcp.json, Codex config.toml text\). Resolves every entry without guessing \(url → remote\_url, npx → npm package, uvx → PyPI package\) and returns one PASS / REVIEW / BLOCK / UNKNOWN verdict per
- `census\_changes`: The Census change feed \(CENSUS-CHANGES/1\): observed transitions across every server — server\_new, remote\_down, remote\_up, tools\_changed, health\_change, verified\_change, security, endpoint\_moved, registry\_status, spec\_era\_change. Cursor-paginated: pass next\_cursor back as since. Filter by events, ser

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