@sunchao116/mcp-audit
MCP ServerFreeA Model Context Protocol (MCP) server tool for auditing npm package dependencies, supporting both local and remote repository security audits
Capabilities5 decomposed
local-npm-dependency-vulnerability-scanning
Medium confidenceScans local npm package.json and package-lock.json files to identify known security vulnerabilities in project dependencies using npm audit's vulnerability database. Integrates with MCP protocol to expose audit results as structured tool outputs that LLM agents can parse and act upon, enabling programmatic vulnerability detection without direct CLI invocation.
Exposes npm audit as an MCP tool endpoint, allowing LLM agents to invoke vulnerability scanning as a native capability within their reasoning loop rather than requiring shell command execution or separate API calls. Bridges the gap between CLI-based npm audit and agent-driven security workflows.
Unlike running npm audit directly in CI/CD, this MCP server allows LLMs to interpret and act on audit results in real-time, enabling dynamic decision-making (e.g., 'block deployment if critical vulnerabilities found')
remote-repository-dependency-audit
Medium confidenceAudits npm dependencies in remote git repositories by cloning or fetching the repository, extracting package.json and package-lock.json, and running vulnerability scans without requiring local filesystem access. Implements repository URL parsing and temporary workspace management to support auditing third-party projects, enabling security assessment of external codebases through MCP protocol.
Implements repository cloning and temporary workspace management within the MCP server itself, abstracting away git operations from the LLM client. Allows agents to audit arbitrary public repositories by URL without needing git CLI knowledge or local repository setup.
More flexible than static code scanning services because it runs npm audit (the authoritative npm vulnerability database) on actual dependency manifests, and integrates results directly into agent reasoning rather than requiring separate security tool integrations
structured-vulnerability-metadata-extraction
Medium confidenceParses npm audit JSON output and transforms it into structured, agent-friendly metadata including vulnerability IDs, affected versions, severity classifications, and remediation paths. Implements schema-based extraction to normalize vulnerability data into consistent formats that LLM agents can reliably parse and reason about without additional parsing logic.
Implements deterministic schema-based extraction that produces consistent JSON structures across different npm versions and audit result variations, enabling reliable LLM parsing without fuzzy text extraction or regex fragility.
More reliable than asking LLMs to parse raw npm audit CLI output because it provides pre-structured data with guaranteed schema, reducing hallucination risk and enabling deterministic agent decision-making
mcp-protocol-tool-endpoint-exposure
Medium confidenceWraps npm audit functionality as MCP tool endpoints that conform to the Model Context Protocol specification, enabling seamless integration with MCP-compatible clients (Claude, custom agents, etc.). Implements tool schema definition with input/output specifications, error handling, and response formatting that allows LLM clients to discover and invoke audit capabilities as native tools.
Implements full MCP server specification for audit tools, including tool schema definition, input validation, and response formatting. Allows LLM agents to discover audit capabilities through MCP's introspection mechanism rather than hardcoding tool definitions.
More standardized than custom API wrappers because it uses the MCP protocol, enabling compatibility with any MCP-aware LLM client without building separate integrations for each platform
severity-level-filtering-and-prioritization
Medium confidenceFilters and ranks vulnerability findings by severity level (critical, high, moderate, low) and enables agents to focus on high-impact issues first. Implements severity-based sorting and optional threshold filtering to allow LLM agents to make risk-aware decisions about which vulnerabilities require immediate action versus those that can be deferred.
Implements deterministic severity-based filtering that allows agents to make consistent risk decisions without requiring additional LLM inference steps. Severity thresholds are configurable, enabling different policies for different environments (dev vs production).
More efficient than asking LLMs to prioritize vulnerabilities because filtering happens at the data layer before agent reasoning, reducing token usage and decision latency
Capabilities are decomposed by AI analysis. Each maps to specific user intents and improves with match feedback.
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Best For
- ✓developers building LLM agents that need security-aware decision making
- ✓teams automating dependency security checks in AI-driven CI/CD pipelines
- ✓solo developers using Claude or other LLMs as security auditors
- ✓security teams evaluating third-party open-source projects
- ✓developers building dependency management agents
- ✓organizations implementing automated supply-chain security scanning
- ✓developers building security dashboards powered by LLM agents
- ✓teams automating vulnerability triage and prioritization
Known Limitations
- ⚠Requires npm audit database to be current — vulnerabilities discovered after last npm update may not be detected
- ⚠Only scans npm ecosystem — does not support yarn.lock, pnpm-lock.yaml, or other package managers
- ⚠Audit results are point-in-time snapshots; no historical tracking or trend analysis across multiple scans
- ⚠Cannot remediate vulnerabilities automatically — only reports findings
- ⚠Requires network access to clone/fetch remote repositories — may be blocked by corporate firewalls or rate limits
- ⚠Temporary workspace cleanup must be handled carefully to avoid disk space exhaustion on repeated scans
Requirements
Input / Output
UnfragileRank
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Package Details
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A Model Context Protocol (MCP) server tool for auditing npm package dependencies, supporting both local and remote repository security audits
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