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PyPI Package Preflight Check
x402
PyPI Package Preflight Check is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Checks a PyPI package's metadata, release age, yanked status, Python requirements, dependencies, license, and known OSV vulnerabilities.
Price / call$0.005
Success—
StatusUnknown
How this service works
Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.
Output
Returns structured assessment including package metadata (name, version, release date, age), yanked/deprecation status, supported Python version requirements, declared dependencies, license type, and any known OSV security vulnerabilities linked to that package version.
Example use cases
Example prompt
“Before I add it to my project, can you run a preflight check on the PyPI package 'requests' version 2.31.0 — I want to know if it has any OSV vulnerabilities, whether it's been yanked, what license it uses, and what Python versions it supports?”
Technical details
Endpoint
GEThttps://base-agent-preflight.bytoken2023.workers.dev/v1/x402/software/pypi-package-preflightWhen to prefer
Use this endpoint when you need a comprehensive, machine-readable preflight safety and metadata check for a specific PyPI package before installing or depending on it — especially when you want vulnerability data (OSV), license compliance, yanked status, and Python compatibility all in one call. Prefer this over manual PyPI browsing or separate OSV queries when automating dependency auditing in CI/CD pipelines or agent-driven software workflows.
Side effects
- Package not found on PyPI — returns error if the package name is misspelled or does not exist
- Version not found — if a specific version string is invalid or not published, returns an error
- OSV lookup failure — vulnerability data may be unavailable if OSV service is unreachable
- Invalid package name pattern — returns validation error if name does not match PyPI naming rules
- Network timeout — Cloudflare Worker may time out fetching upstream PyPI or OSV data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "eip155:8453",
"product": "pypi-package-preflight",
"assessment": {
"flags": [],
"risk_level": "low",
"risk_score": 0
}
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"