io.github.cyanheads/attack-surface-mcp-server

io.github.cyanheads/attack-surface-mcp-serverv0.1.1Maps & Location

Passive external attack-surface mapping: CT subdomains, DNS, TLS, HTTP posture, RDAP/WHOIS, Shodan.

In-path gate · all MCP tools

Using io.github.cyanheads/attack-surface-mcp-server in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

uv tool install mcpindex-gate && mcpindex-config-wire

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

REVIEWstatus: PARTIALfresh until 2026-08-20 03:03 UTC

screened 2026-07-21tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“No malicious instructions found in description”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory
- registry description only no input schema
- screen model 8b

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-07-29).

Contracts can change after screening, with no version bump. The gate pins io.github.cyanheads/attack-surface-mcp-server’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday.

See your first HOLD in 2 minutes →

Embed this badge

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-cyanheads-attack-surface-mcp-server)](https://mcpindex.ai/server/io-github-cyanheads-attack-surface-mcp-server)

HTML

<a href="https://mcpindex.ai/server/io-github-cyanheads-attack-surface-mcp-server"><img src="https://mcpindex.ai/api/v1/badge/io-github-cyanheads-attack-surface-mcp-server" alt="mcpindex verdict" height="20" /></a>

Environment variables

SHODAN_API_KEY

secret

Optional Shodan API key. Enables attacksurface_lookup_host; absent → that one tool returns source_unavailable and the rest of the server works.

CERTSPOTTER_API_KEY

secret

Optional Certspotter API key. Raises CT-fallback rate limits; absent → free unauthenticated tier.

ATTACKSURFACE_DEFAULT_RESOLVERS

Comma-separated default DNS resolver IPs for attacksurface_resolve_dns.

ATTACKSURFACE_HTTP_USER_AGENT

Default User-Agent for attacksurface_probe_http (overridable per call).

ATTACKSURFACE_MAX_SUBDOMAINS

Cap on subdomains resolved during a map_domain run.

ATTACKSURFACE_RDAP_BOOTSTRAP_URL

RDAP bootstrap base URL; override for a private/mirrored RDAP.

ATTACKSURFACE_ALLOW_PRIVATE_TARGETS

Set true to disable the SSRF guard for internal-network assessment (local/trusted deployments only).

MCP_LOG_LEVEL

Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').

MCP_HTTP_HOST

The hostname for the HTTP server.

MCP_HTTP_PORT

The port to run the HTTP server on.

MCP_HTTP_ENDPOINT_PATH

The endpoint path for the MCP server.

MCP_AUTH_MODE

Authentication mode to use: 'none', 'jwt', or 'oauth'.

MCP_LOG_LEVEL

Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

Alternatives in Maps & Location

BittleBits GEO Assistant

ai.bittlebits/bittlebits

GEO scores and content-rewrite suggestions for any web page, as MCP tools.

ai.factori/mcp

Real-world location intelligence: foot traffic, trade areas, demographics, site scoring, and more.

ai.geodesiclabs/governance-platform

Pre-execution governance for AI agents. Deterministic PASS/FAIL/REVIEW verdicts, replayable proof.

Install this server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "attack-surface-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "@cyanheads/attack-surface-mcp-server"
      ],
      "env": {
        "SHODAN_API_KEY": "<your-shodan_api_key>",
        "CERTSPOTTER_API_KEY": "<your-certspotter_api_key>",
        "ATTACKSURFACE_DEFAULT_RESOLVERS": "8.8.8.8,1.1.1.1,9.9.9.9",
        "ATTACKSURFACE_HTTP_USER_AGENT": "<attacksurface_http_user_agent>",
        "ATTACKSURFACE_MAX_SUBDOMAINS": "200",
        "ATTACKSURFACE_RDAP_BOOTSTRAP_URL": "https://rdap.org",
        "ATTACKSURFACE_ALLOW_PRIVATE_TARGETS": "false",
        "MCP_LOG_LEVEL": "info",
        "MCP_HTTP_HOST": "127.0.0.1",
        "MCP_HTTP_PORT": "3010",
        "MCP_HTTP_ENDPOINT_PATH": "/mcp",
        "MCP_AUTH_MODE": "none"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "attack-surface-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "--",
        "@cyanheads/attack-surface-mcp-server"
      ],
      "env": {
        "SHODAN_API_KEY": "<your-shodan_api_key>",
        "CERTSPOTTER_API_KEY": "<your-certspotter_api_key>",
        "ATTACKSURFACE_DEFAULT_RESOLVERS": "8.8.8.8,1.1.1.1,9.9.9.9",
        "ATTACKSURFACE_HTTP_USER_AGENT": "<attacksurface_http_user_agent>",
        "ATTACKSURFACE_MAX_SUBDOMAINS": "200",
        "ATTACKSURFACE_RDAP_BOOTSTRAP_URL": "https://rdap.org",
        "ATTACKSURFACE_ALLOW_PRIVATE_TARGETS": "false",
        "MCP_LOG_LEVEL": "info",
        "MCP_HTTP_HOST": "127.0.0.1",
        "MCP_HTTP_PORT": "3010",
        "MCP_HTTP_ENDPOINT_PATH": "/mcp",
        "MCP_AUTH_MODE": "none"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y -- @cyanheads/attack-surface-mcp-server

Claude Code (claude mcp add)

claude mcp add --scope user attack-surface-mcp-server -- npx -y -- @cyanheads/attack-surface-mcp-server

Gemini CLI (gemini mcp add)

gemini mcp add -s user attack-surface-mcp-server npx -y -- @cyanheads/attack-surface-mcp-server

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-cyanheads-attack-surface-mcp-server

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v0.1.1
category: Maps & Location
verdict expires: 2026-08-20
quality: 79 / 100
operator: cyanheads

Listing

Listed from the official MCP registry. Unclaimed by its maintainer. Maintainer? Email us →

Provenance

Each verdict is bound to a hash of the exact description it judged, so a re-crawl that changes the text produces a new record rather than silently inheriting this one. Verdict history is hash-chained and anchored to Bitcoin via OpenTimestamps (latest confirmed at block 959,933). Verify it yourself.

Links

Repository →