Search / com.mcpcensus/census
Vet any MCP server before you depend on it. Stamp: PASS, REVIEW, or BLOCK.
v1.4.0 · active · website · descriptor JSON · versions
protogrid{
"mcpServers": {
"census": {
"type": "http",
"url": "https://api.mcpcensus.com/mcp"
}
}
}claude mcp add --transport http census https://api.mcpcensus.com/mcp[mcp_servers.census]
url = "https://api.mcpcensus.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"census": {
"type": "remote",
"url": "https://api.mcpcensus.com/mcp",
"enabled": true
}
}
}{
"mcpServers": {
"census": {
"type": "http",
"url": "https://api.mcpcensus.com/mcp"
}
},
"deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=census&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBpLm1jcGNlbnN1cy5jb20vbWNwIn0%3D"
}{
"servers": {
"census": {
"type": "http",
"url": "https://api.mcpcensus.com/mcp"
}
}
}{
"mcpServers": {
"census": {
"httpUrl": "https://api.mcpcensus.com/mcp"
}
}
}extensions:
"census":
enabled: true
name: "census"
type: streamable_http
uri: "https://api.mcpcensus.com/mcp"
timeout: 300
protocol.modernsupports 2026-07-28 (server/discover)protocol.statelessanswers without a sessionprotocol.transportstreamable HTTPprotocol.list_ttltool list is cacheable (ttlMs 3600000)auth.prm, auth.as_metadata, auth.cimdno remote uses OAuthauth.secret_in_urlno templated URLtools.descriptionsevery tool has a descriptiontools.description_lengthdescriptions are concisetools.schemasevery tool has an object input schematools.annotationsonly 4 of 15 tools declare readOnlyHint or destructiveHinttools.directory_hints4 of 15 tools declare all four hints; missing: census_watch_list (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); census_lookup (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); census_search (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …tools.token_costabout 2,157 tokens to load every tooltools.api_dumptools are not a one-to-one API dumpstability.changesno tool changes in 30 daysstability.rug_pullno tool changed its meaning under the same namedeps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI packageNo tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.
Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.
+dns-namespace +website -unreachable(1 failures) ~updated-51d-ago -no-repository
Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.
| remote | auth | reachable | uptime 30d | p50 | protocol | last ok |
|---|---|---|---|---|---|---|
https://api.mcpcensus.com/mcp streamable-http | none | no (1 failures) | 96% | 195 ms | 2026-07-28, 2025-06-18, 2025-03-26, 2024-11-05 | 2026-10-19 |
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 entry under a built-in policy, plus CENSUS-AUDIT/1 text, valid_until_epoch and exit_code (1 on any BLOCK). UNKNOWN is never upgraded to PASS. Cost 1 credit per config per UTC day; keyless callers get one config of ≤25 entries per IP per day. Not a malware scan; PASS is not a sandbox. Strip env/headers before sending. |
census_changesread-only | 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, server_names or namespace_domain. Only real transitions, never 'still fine'. Unmetered in v1; poll hourly. Not a malware scan. |
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_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_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_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_policy_listread-only | List the exact immutable Preflight v1 built-in policy objects, canonical ruleset, and policy digests. Unmetered. |
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_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_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/confirmed_absent), query_intent (brand_lookup|category|package|install_gate|junk — does not change ranking), intent_cta (preflight when they asked an install-gate question). Prefer official_match=true rows. Never invent servers. |
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_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_watch_list | List active per-server watches for this API key. Requires x-api-key. |
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 watch id + HMAC secret (X-Census-Signature: sha256=…). Free tier: 5 watches; pro: 50. |
census_watch_unsubscribe | Deactivate a watch by id. Requires x-api-key that owns the watch. |
Schemas: list_tools.
{
"name": "com.mcpcensus/census",
"title": "The MCP Census",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json",
"remotes": [
{
"url": "https://api.mcpcensus.com/mcp",
"type": "streamable-http"
}
],
"version": "1.4.0",
"websiteUrl": "https://mcpcensus.com",
"description": "Vet any MCP server before you depend on it. Stamp: PASS, REVIEW, or BLOCK."
}