# censys-mcp

Censys internet scan: host lookup and search. Needs free key.

- **Type:** MCP server
- **Trust:** 60/100 (B), scored on the package rubric
- **Verification:** community-indexed — nobody has claimed this listing
- **Version:** 1.0.4
- **Author:** Unknown
- **License:** MIT
- **npm:** censys-mcp
- **Source:** https://github.com/mrfentmen/premium-mcps
- **Compatible clients:** claude-code, cursor, copilot, gemini (basis: transport)

## Trust

60/100 (B), scored on the package rubric
- Publisher verified: no
- Install scripts: nothing suspicious found
- Prompt-injection scan: not run
- Obfuscation scan: not run
- Evidence age: 0 days

## Security scan

- **Status:** clean
- **Scanned:** 2026-10-19T19:17:44.558Z
- **Version scanned:** 1.0.4
- **CVEs:** none found by OSV at scan time

## Tools

10 declared. Statically extracted from the shipped source — a floor on the surface, not a census.
- `get_host` — Censys record for an IP: services, ports and certificates.
- `search_hosts` — Search hosts with Censys query syntax, e.g. services.http.
- `host_aggregate` — Bucket any Censys host field across every host matching a query - top ports on HTTP, ASNs in a country, software in use - with total, omitted hosts and deviatio
- `search_certificates` — Search the Censys certificate index: subject, issuer, signature algorithm, validity window and days remaining, SAN names, JA3/JA4 and NSS validation status.
- `certificate_exposure` — The exposure surface behind one certificate: its subject, issuer, validity and names, then every Censys host presenting it with the services and ports it appear
- `health_check` — Check if the server is running and responsive.
- `version_info` — Get server version and metadata.
- `list_tools` — List all available tools on this server.
- `echo` — Echo back the provided text.
- `timestamp` — Get the current UTC timestamp.

## Install

**Verdict: review** — Installable, but 1 thing to check first: No publisher has proved control of this listing; it is indexed, not vouched for.
**Cautions** (coverage gaps and advisories — never blocking)
- No publisher has proved control of this listing; it is indexed, not vouched for.
**Config** (claude-code):
```json
"{\n  \"mcpServers\": {\n    \"censys\": {\n      \"command\": \"npx\",\n      \"args\": [\n        \"-y\",\n        \"censys-mcp\"\n      ]\n    }\n  }\n}"
```

## Blast radius

Contained to moderate — no credential declaration found, from the publisher, the upstream registry, or the README. Known so far: runs on your machine; read-only tool surface.
- Floor 13, ceiling 31 (tier: unknown)
- `unknown` means the floor and ceiling land in different bands — not measured enough to name one. It does not mean low.
- This is impact, not likelihood. A high radius is not a defect: a filesystem server is supposed to write files. It is never part of the trust score.

## Machine-readable views of this entry

- Signed JSON: https://forgeregistry.com/api/v1/packages/censys-mcp
- Install plan: https://forgeregistry.com/api/v1/packages/censys-mcp/install-plan
- Alternatives: https://forgeregistry.com/api/v1/alternatives/censys-mcp
- HTML page: https://forgeregistry.com/registry/censys-mcp
- MCP: POST https://forgeregistry.com/api/mcp → `forge_get_package` / `forge_install_plan`

## About this document

Generated by Forge (https://forgeregistry.com) — a compact rendering of the same record served, signed, at the JSON URL above. Trust and scan facts are the registry's own measurements; anything Forge did not measure is named as unmeasured rather than omitted.