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Forest Packages – Package Registry Change Detector
x402
Forest Packages – Package Registry Change Detector is a paid API for AI agents from http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Detects whether normalized npm or PyPI package metadata has changed since a saved SHA-256 fingerprint, covering version existence, deprecation, license, and runtime requirements.
Price / call$0.002
Success—
StatusUnknown
How this service works
Detect whether normalized public npm or PyPI package registry state changed since a saved fingerprint. Returns a deterministic SHA-256 fingerprint for package/version existence, latest/resolved version, deprecation or yank state, license and runtime requirement. No dependency graph, vulnerability scan or registry mutation. Base mainnet USDC
Output
Returns a deterministic SHA-256 fingerprint representing the current normalized public state of the package/version (version existence, latest/resolved version, deprecation or yank state, license, runtime requirements), plus a boolean or signal indicating whether the current state differs materially from the supplied previous_hash. No dependency graph, vulnerability data, or registry mutations are included.
Example use cases
Deprecation alert for CI pipeline
“Has the PyPI package requests at version 2.28.0 been yanked or deprecated since this fingerprint: b1a2c3d4e5f6789012345678901234567890123456789012345678901234ef56?”
License compliance drift monitoring
“Check if the license on the npm package chalk version 5.3.0 has changed since I last fingerprinted it — here's the old hash: 1234abcd5678ef901234567890abcdef1234567890abcdef1234567890abcd12.”
Latest version drift detection for dependency bot
“Tell me if the latest published version of the PyPI package numpy has changed since this saved fingerprint: deadbeef1234567890abcdef1234567890abcdef1234567890abcdef12345678.”
Technical details
Endpoint
POSThttps://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/package/changed?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, deterministic way to poll whether a specific npm or PyPI package's public metadata (version availability, deprecation, license, runtime req) has drifted from a known-good state — without needing a full vulnerability scan, dependency resolution, or graph traversal. Ideal for CI/CD monitors, dependency bots, compliance checkers, and supply chain watchers that need cheap, fast, idempotent change signals rather than a full audit.
Side effects
- Package not found in the specified ecosystem — returns error or null state
- Invalid previous_hash format (not 64 hex chars) — rejected by schema validation
- Ecosystem not supported beyond npm/pypi — request rejected
- Registry API timeout or upstream outage — transient failure
- Version string not found for the given package — may return empty or changed state
- Payment not attached or insufficient USDC — x402 payment required error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| package | string | Public package name to inspect. |
| version | string | Package version whose public metadata should be checked. |
| ecosystem | — | Public ecosystem value used to scope this lookup. |
| previous_hash | — | Earlier result hash used to detect a material change. |
Tags
x402
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Zero review prompt (fires after every successful call)
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