x402 service · $0.02 USDC / request

Know before your agent installs.

Dependency Preflight evaluates exact npm and PyPI package versions before installation and returns a structured ALLOW, REVIEW, or BLOCK decision with findings and source evidence.

POST /v1/dependency-preflight
{
  "ecosystem": "npm",
  "packages": [
    {
      "name": "example-package",
      "version": "1.0.0"
    }
  ],
  "policy": "balanced"
}
What it does

A machine-readable checkpoint before installation.

Give autonomous coding workflows a compact decision point before they add a dependency.

Request

Submit one or more exact package versions from npm or PyPI.

Evaluate

The service checks metadata and evidence such as known-vulnerability, lifecycle, install-script, release-age, and license-related inputs.

Decide

Receive ALLOW, REVIEW, or BLOCK so the workflow can continue, escalate, or stop.

Capabilities

Built for automation.

  • Evaluate up to ten exact package versions per request
  • npm and PyPI ecosystems
  • Package-level and request-level decisions
  • Findings plus source evidence in JSON
  • Pay per use, no subscription required
Technical proof

Inspect the live interfaces.

The public API surfaces are the authoritative service contract.

Important: Dependency Preflight provides informational automation inputs, not a security guarantee or legal opinion. Integrators should rely on the current API documentation and OpenAPI specification for authoritative behavior.