mcp-census

endpoint

https://api.mcpcensus.com/mcp

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

0 · newcomer

Is mcp-census live?

Yes — it answered the hub's last check (checked 23m ago). It answered 100% of checks over the last 30 days.

Is mcp-census free to use?

Partly — some of its tools are open, others need a key or payment.

What tools does mcp-census have?

15 tools: census_watch_subscribe, census_credits, census_audit_config, census_stamp, census_watch_unsubscribe, census_preflight, census_search, census_lookalikes, ….

Is mcp-census safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• census_policy_list reads open 13h ago

  List the exact immutable Preflight v1 built-in policy objects, canonical ruleset, and policy digests. Unmetered.

  mcp-tool

  123456

  {
    "type": "object",
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "properties": {},
    "additionalProperties": false
  }

  arguments 6 lines copy
• census_changes reads open 13h ago

  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.

  mcp-tool

  12345678910111213141516171819202122232425262728293031323334

  {
    "type": "object",
    "properties": {
      "limit": {
        "type": "integer",
        "default": 100,
        "maximum": 200,
        "minimum": 1
      },
      "since": {
        "type": "string",
        "description": "next_cursor from the previous page, or an RFC 3339 time for the first call"
      },
      "events": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "description": "Event names to include (default all)"
      },
      "server_names": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "description": "Exact canonical names to include (≤50)"
      },
      "namespace_domain": {
        "type": "string",
        "description": "Registrable domain of a DNS-verified namespace, e.g. notion.com"
      }
    },
    "additionalProperties": false
  }

  arguments 34 lines copy
• census_stats reads open 13h ago

  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.

  mcp-tool

  1234

  {
    "type": "object",
    "properties": {}
  }

  arguments 4 lines copy
• census_recent reads open 15h ago

  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).

  mcp-tool

  123456789

  {
    "type": "object",
    "properties": {
      "limit": {
        "type": "number",
        "description": "Max results 1–50 (default 20)"
      }
    }
  }

  arguments 9 lines copy
• census_coverage reads open 15h ago

  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.

  mcp-tool

  1234

  {
    "type": "object",
    "properties": {}
  }

  arguments 4 lines copy
• census_lookup reads open 10h ago

  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).

  mcp-tool

  123456789101112

  {
    "type": "object",
    "required": [
      "name"
    ],
    "properties": {
      "name": {
        "type": "string",
        "description": "Exact MCP registry server name"
      }
    }
  }

  arguments 12 lines copy
• census_watch_list reads auth-required 15h ago

  List active per-server watches for this API key. Requires x-api-key.

  mcp-tool

  1234

  {
    "type": "object",
    "properties": {}
  }

  arguments 4 lines copy
• census_watch_subscribe changes data unknown never probed

  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.

  mcp-tool

  12345678910111213141516171819202122232425262728293031

  {
    "type": "object",
    "required": [
      "server_name"
    ],
    "properties": {
      "email": {
        "type": "string",
        "description": "Optional human email for the same alerts"
      },
      "label": {
        "type": "string",
        "description": "Optional agent-chosen label"
      },
      "events": {
        "type": "array",
        "items": {
          "type": "string"
        },
        "description": "Subset of remote_down,remote_up,health_change,verified_change,security,tools_changed (default: all)"
      },
      "server_name": {
        "type": "string",
        "description": "Exact registry name to watch"
      },
      "webhook_url": {
        "type": "string",
        "description": "https URL that will receive signed POST event payloads"
      }
    }
  }

  arguments 31 lines copy
• census_credits reads unknown never probed

  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.

  mcp-tool

  1234

  {
    "type": "object",
    "properties": {}
  }

  arguments 4 lines copy
• census_audit_config reads unknown never probed

  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.

  mcp-tool

  123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051

  {
    "type": "object",
    "required": [
      "config"
    ],
    "properties": {
      "config": {
        "anyOf": [
          {
            "type": "object"
          },
          {
            "type": "string"
          },
          {
            "type": "array"
          }
        ],
        "description": "The config document: an object with mcpServers | servers | mcp_servers, a list under entries[], or raw text (JSON or Codex config.toml)"
      },
      "format": {
        "enum": [
          "json",
          "toml"
        ],
        "type": "string"
      },
      "strict": {
        "type": "boolean",
        "default": false,
        "description": "exit_code 2 when any entry is REVIEW or UNKNOWN"
      },
      "policy_id": {
        "enum": [
          "builtin:baseline",
          "builtin:first-party",
          "builtin:strict"
        ],
        "type": "string",
        "default": "builtin:baseline"
      },
      "previous_tools_digests": {
        "type": "object",
        "description": "alias → tools_digest from your last audit; sets tools_drift per entry",
        "additionalProperties": {
          "type": "string"
        }
      }
    },
    "additionalProperties": false
  }

  arguments 51 lines copy
• census_stamp reads unknown never probed

  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.

  mcp-tool

  123456789101112131415161718192021222324252627282930313233

  {
    "type": "object",
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "required": [
      "server_name"
    ],
    "properties": {
      "refresh": {
        "enum": [
          "never",
          "if_stale"
        ],
        "type": "string",
        "default": "never"
      },
      "policy_id": {
        "enum": [
          "builtin:baseline",
          "builtin:first-party",
          "builtin:strict"
        ],
        "type": "string",
        "default": "builtin:baseline"
      },
      "server_name": {
        "type": "string",
        "maxLength": 300,
        "minLength": 1,
        "description": "Exact canonical Census server name"
      }
    },
    "additionalProperties": false
  }

  arguments 33 lines copy
• census_watch_unsubscribe changes data unknown never probed

  Deactivate a watch by id. Requires x-api-key that owns the watch.

  mcp-tool

  123456789101112

  {
    "type": "object",
    "required": [
      "id"
    ],
    "properties": {
      "id": {
        "type": "string",
        "description": "Watch id from census_watch_subscribe"
      }
    }
  }

  arguments 12 lines copy
• census_preflight reads unknown never probed

  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.

  mcp-tool

  123456789101112131415161718192021222324252627282930313233

  {
    "type": "object",
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "required": [
      "server_name"
    ],
    "properties": {
      "refresh": {
        "enum": [
          "never",
          "if_stale"
        ],
        "type": "string",
        "default": "never"
      },
      "policy_id": {
        "enum": [
          "builtin:baseline",
          "builtin:first-party",
          "builtin:strict"
        ],
        "type": "string",
        "default": "builtin:baseline"
      },
      "server_name": {
        "type": "string",
        "maxLength": 300,
        "minLength": 1,
        "description": "Exact canonical Census server name"
      }
    },
    "additionalProperties": false
  }

  arguments 33 lines copy
• census_search reads unknown 10h ago

  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.

  mcp-tool

  12345678910111213141516

  {
    "type": "object",
    "required": [
      "query"
    ],
    "properties": {
      "limit": {
        "type": "number",
        "description": "Max results 1–50 (default 20)"
      },
      "query": {
        "type": "string",
        "description": "Keyword or partial server name (>= 2 chars). Typos and space variants are resolved when confident."
      }
    }
  }

  arguments 16 lines copy
• census_lookalikes reads unknown 10h ago

  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.

  mcp-tool

  123456789101112

  {
    "type": "object",
    "required": [
      "server_name"
    ],
    "properties": {
      "server_name": {
        "type": "string",
        "description": "Exact canonical Census server name"
      }
    }
  }

  arguments 12 lines copy

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.