io.github.andrasfe/vulnicheck
HTTP MCP Server for comprehensive Python vulnerability scanning and security analysis.
Using io.github.andrasfe/vulnicheck 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).
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-wireSemantic screen found no manipulation pattern in the description. Conformance probe not yet run.
mcpindex.integrity.descriptionpassINFOevidence“No malicious instructions found”via static_description
- - 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 2026-07-31).
Contracts can change after screening, with no version bump. The gate pins io.github.andrasfe/vulnicheck’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 →
Related: how to trust an MCP server · screen before install · silent contract drift
A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.
[](https://mcpindex.ai/server/io-github-andrasfe-vulnicheck)<a href="https://mcpindex.ai/server/io-github-andrasfe-vulnicheck"><img src="https://mcpindex.ai/api/v1/badge/io-github-andrasfe-vulnicheck" alt="mcpindex verdict" height="20" /></a>NVD_API_KEYAPI key for NIST National Vulnerability Database (increases rate limit from 5 to 50 requests per 30 seconds)
GITHUB_TOKENGitHub token for Advisory Database access (increases rate limit to 5000 requests per hour)
OPENAI_API_KEYOpenAI API key for LLM-based risk assessment in MCP passthrough operations
ANTHROPIC_API_KEYAnthropic API key for LLM-based risk assessment (alternative to OpenAI)
MCP_PORTPort for MCP HTTP server (default: 3000)
CACHE_TTLCache time-to-live in seconds for vulnerability data (default: 900)
VULNICHECK_HTTP_ONLYEnable HTTP-only mode with MCP client delegation (true/false, default: auto-detect)
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