Stack Facts MCP

Stack Facts provides paid data feeds for AI agents, offering signed answers regarding software end-of-life dates, actively exploited CVEs from CISA KEV, and LLM pricing. It allows agents to check package security, verify runtime support status, and compare model costs using USDC payments via the x402 protocol without requiring an account or API key.

Endpoint and access

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No sign-inEndpoint checked 2026-10-18Operated by Stack Facts

MCP endpoint (Streamable HTTP)

https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp

Vendor documentation

What you can do with it

Check if a software product or version is end-of-life
Look up actively exploited CVEs from CISA KEV
Compare LLM prices and context windows
Validate package security and vulnerabilities

Tools advertised by the last live check:

stackfacts_eol_product
stackfacts_eol_cycle
stackfacts_eol_check
stackfacts_eol_image
stackfacts_eol_snapshot
stackfacts_kev_lookup
stackfacts_kev_check
stackfacts_kev_changes
stackfacts_kev_snapshot
stackfacts_models_lookup
stackfacts_models_estimate
stackfacts_models_cheapest
stackfacts_models_changes
stackfacts_models_watch
stackfacts_models_snapshot
stackfacts_stack_check
stackfacts_osv_check
stackfacts_preflight
stackfacts_cve_lookup
stackfacts_cwe_lookup
stackfacts_technique_lookup
stackfacts_capec_lookup
stackfacts_domain_lookup
stackfacts_port_lookup
stackfacts_control_lookup
stackfacts_bcp47_lookup
stackfacts_tz_lookup
stackfacts_package_card
stackfacts_license_check
stackfacts_cve_prioritize
stackfacts_cve_search
stackfacts_package_preflight
stackfacts_upgrade_delta
stackfacts_lockfile_diff
stackfacts_stack_watch
stackfacts_preview
stackfacts_try
stackfacts_index
stackfacts_validate
stackfacts_manifest
stackfacts_keys

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http stack-facts-mcp https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add stack-facts-mcp --url https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable stack-facts-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "stack-facts-mcp": {
      "url": "https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "stack-facts-mcp": {
      "type": "streamableHttp",
      "url": "https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start stack-facts-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "stack-facts-mcp": {
      "type": "http",
      "url": "https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http stack-facts-mcp https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "stack-facts-mcp": {
      "url": "https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "stack-facts-mcp": {
      "serverUrl": "https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/mcp"
    }
  }
}

See all 1,227

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