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ai-trust

Trust verification CLI for AI packages — MCP servers, A2A agents, skills, AI tools, and LLMs. Queries the OpenA2A Registry trust graph for security scans, community consensus, dependency risk, and known advisories.

For general-purpose libraries (express, typescript, chalk, etc.) use HackMyAgent instead — ai-trust is scoped to AI-native packages only.

Installation

brew install opena2a-org/tap/ai-trust

Or via npm:

npm install -g ai-trust

Or run directly with npx:

npx ai-trust check @modelcontextprotocol/server-filesystem

For a full security dashboard covering trust, credentials, shadow AI, and more:

npx opena2a-cli review

Quick Start

ai-trust check @modelcontextprotocol/server-filesystem

Expected output:

  @modelcontextprotocol/server-filesystem  mcp_server · scanned 2 days ago
  No known issues

  Trust     ━━━━━━━━━━━━━━━━━━━━ 87/100
  Level     Scanned (3/4)
  Blocked > Warning > Listed > Scanned > Verified

  ── Next Steps ──────────────────────────────────────────────
  Fresh scan:         ai-trust check @modelcontextprotocol/server-filesystem
  Full project audit: ai-trust audit package.json

Scope: AI packages only

ai-trust verifies trust for AI-native packages. For everything else, use HMA:

ai-trust audit package.json audits AI packages in the trust table and separately lists libraries in an "Out of scope" section with an HMA pointer.

Built-in Help

ai-trust --help          # All commands and flags
ai-trust --version       # Current version
ai-trust [command] -h    # Help for a specific command

Commands

check

Look up the trust verdict for a single AI package.

ai-trust check @modelcontextprotocol/server-filesystem
ai-trust check my-custom-agent --type a2a_agent
ai-trust check @modelcontextprotocol/server-postgres --json     # JSON output for scripting

Running check on a general-purpose library (e.g. ai-trust check express) returns an "out of scope" message with a redirect to hackmyagent check express. This is intentional — ai-trust is for AI packages only.

MCP Server Trust

MCP servers are the most common trust query. Use shorthand to skip the full @modelcontextprotocol/ scope:

# These are equivalent:
ai-trust check server-filesystem
ai-trust check @modelcontextprotocol/server-filesystem

# Third-party MCP servers use their own package names:
ai-trust check mcp-server-kubernetes
ai-trust check @supabase/mcp-server-supabase
ai-trust check @cloudflare/mcp-server-cloudflare

Shorthand rule: server-* resolves to @modelcontextprotocol/server-*. Third-party mcp-server-* packages are looked up by their actual name.

Scan on demand

When a package is not in the registry, ai-trust can download and scan it locally using HackMyAgent. In interactive mode, you will be prompted. In CI, use flags:

# Auto-scan unknown packages, contribute results to the community registry
ai-trust check mcp-server-xyz --scan-if-missing --contribute

# Registry lookup only (skip local scan)
ai-trust check server-filesystem --no-scan

audit

Parse dependency files and audit AI packages. Supports any .json file (package.json format) or .txt file (requirements.txt format). Libraries in the file are partitioned into an "Out of scope" section with a pointer to HMA for general security scanning.

ai-trust audit package.json
ai-trust audit requirements.txt
ai-trust audit package.json --min-trust 2         # set minimum trust threshold (default: 3)
ai-trust audit package.json --scan-missing --contribute  # scan unknown AI packages

Example output (mixed AI + libraries):

  5 AI packages audited · 9 libraries out of scope

  PACKAGE                    TYPE          VERDICT   TRUST       SCORE         SCAN
  ──────────────────────────────────────────────────────────────────────────────────────
  @modelcontextprotocol/sdk  mcp_server    SAFE      Scanned     ━━━━━━━━ 87  passed
  @opena2a/aim-core          a2a_agent    SAFE      Scanned     ━━━━━━━━ 81  passed
  ...

  ── Out of scope (libraries) ────────────────────────────────
  ai-trust is for AI packages. For general security, use HackMyAgent.
  @noble/ed25519, @noble/post-quantum, commander, js-yaml, onnxruntime-node + 4 more

  ── Next Steps ──────────────────────────────────────────────
  Library security:  npx hackmyagent secure .

batch

Look up trust verdicts for multiple AI packages at once. Non-AI packages get partitioned into the "Out of scope" footer.

ai-trust batch @modelcontextprotocol/server-filesystem @modelcontextprotocol/server-postgres
ai-trust batch my-server-a my-server-b --type mcp_server

Output Options

ai-trust check express --json          # JSON output for scripting
ai-trust audit package.json --json     # JSON audit output
ai-trust check express --no-color      # disable colored output
ai-trust check express --registry-url http://localhost:8080  # custom registry

Community Contribution

Every scan you run can improve trust data for the entire community. Scan results are shared as anonymized telemetry (check pass/fail and severity only -- no file paths, source code, or descriptions).

On first scan, ai-trust asks whether you want to contribute. Your choice is saved in ~/.opena2a/config.json and shared across all OpenA2A tools (opena2a-cli, hackmyagent).

# Contribute for this scan (non-interactive / CI)
ai-trust check chalk --contribute

# Configure globally via opena2a-cli
opena2a config set contribute true    # opt in
opena2a config set contribute false   # opt out

The more scans contributed, the faster packages move from "Listed" to "Scanned" trust level, reducing risk for everyone.

Trust Levels

Exit Codes

Requirements

• Node.js 18 or later
• HackMyAgent (optional, required for local scanning)

Development

git clone https://github.com/opena2a-org/ai-trust.git
cd ai-trust && npm install && npm run build
node dist/index.js check express    # run locally without installing

Use Cases

Step-by-step guides for common workflows:

• Check if a package is safe before installing
• Verify an MCP server's trust score
• Contribute trust data to the community

See docs/USE-CASES.md for the full index.

Links

• OpenA2A Registry — trust scores and scan data
• OpenA2A CLI — unified security CLI
• HackMyAgent — local scanning for unverified packages
• opena2a.org — full platform

License

Apache-2.0