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SignalDesk AI – Crate Versions Lookup
x402
SignalDesk AI – Crate Versions Lookup is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-13).
Fetches version history for a named Rust crate from crates.io, returning version numbers, licenses, Rust edition requirements, and yank status.
Price / call$0.002
Success—
StatusUnknown
How this service works
Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.
Output
A JSON object containing a list of crate versions (up to the requested limit), each with version string, license, created_at timestamp, minimum Rust version, and yanked flag. Also includes source metadata such as the crates.io URL, fetch time, and cache expiry.
Example use cases
Check latest stable crate release
“What's the most recent non-yanked version of tokio on crates.io, and what Rust version does it require?”
Audit crate license before shipping
“I need to confirm the license for the top 10 versions of the rand crate before we ship — can you pull that from crates.io?”
Track crate release history for changelog
“List the last 20 versions of axum with their release dates and any that were yanked, so I can build a changelog summary.”
Technical details
Endpoint
GEThttps://x402-agent.kariguetoazul.workers.dev/api/dev/crate-versions?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, cached version metadata for a Rust crate from crates.io — especially version numbers, license info, yank status, and minimum Rust edition — without scraping crates.io directly. Prefer it over raw crates.io API calls when operating inside an x402 payment-gated agent pipeline or when you want pre-transformed, normalized JSON output.
Side effects
- Package name not found on crates.io — returns empty versions array or error
- Limit parameter out of range (must be 1–20) — validation error
- Crates.io upstream unavailable — timeout or upstream error propagated
- Missing required 'package' query parameter — schema validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"source": {
"provider": "crates.io metadata",
"expires_at": "2026-10-02T10:44:49.147Z",
"fetched_at": "2026-10-02T09:44:49.147Z",
"source_url": "https://crates.io/api/v1/crates/serde/versions",
"transformed": true
},
"versions": [
{
"yanked": false,
"license": "MIT OR Apache-2.0",
"version": "1.0.229",
"created_at": "2026-07-18T23:05:13.266456Z",
"rust_version": "1.56"
},
{
"yanked": false,
"license": "MIT OR Apache-2.0",
"version": "1.0.228",
"created_at": "2025-09-27T16:51:35.265429Z",
"rust_version": "1.56"
},
{
"yanked": false,
"license": "MIT OR Apache-2.0",
"version": "1.0.227",
"created_at": "2025-09-25T23:43:08.742811Z",
"rust_version": "1.56"
}
]
}
}Tags
x402
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