{"uid":"cap_gasQhTBwMFXxCXKzhdfEF","slug":"fastx402-crate-versions-lookup-381a7b90","name":"FastX402 Crate Versions Lookup","description":"200 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.","url":"https://fastx402.tools/crate-versions?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["crate"],"properties":{"crate":{"type":"string","description":"Crate name"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"crate":{"type":"string"},"versions":{"type":"array","items":{"type":"object","properties":{"num":{"type":"string"},"yanked":{"type":"boolean"},"released":{"type":"string"}}}}}}}}}},"responseSchema":{"type":"json","example":{"crate":"serde","versions":[{"num":"1.0.210","yanked":false,"released":"2024-09-19T18:45:32.123456+00:00"},{"num":"1.0.209","yanked":false,"released":"2024-09-13T05:12:08.654321+00:00"},{"num":"1.0.208","yanked":false,"released":"2024-08-29T19:34:51.111222+00:00"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7J3n8kuJz8LPb9-_-1yfl","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns all published versions of a Rust crate from crates.io, including version numbers, release dates, and yanked status.","exampleAgentPrompt":"What versions of the tokio crate are available on crates.io, and which ones have been yanked?","exampleUseCases":[{"title":"Check latest stable crate version","prompt":"What's the most recent non-yanked version of serde that's been released? I need to know what to put in my Cargo.toml."},{"title":"Audit yanked versions in dependency","prompt":"Can you look up all the versions of the rand crate and tell me which ones have been yanked so I know which to avoid?"},{"title":"Track crate release history","prompt":"I want to see the full release history of the actix-web crate — all version numbers and when each one came out."}],"resultDescription":"A JSON object containing the crate name and an array of version objects, each with a version number string (e.g. '1.0.210'), a boolean indicating whether it was yanked, and an ISO 8601 timestamp of when it was released.","failureModes":["Crate name not found on crates.io — returns empty or error response","Invalid or misspelled crate name — no versions returned","Payment failure via x402 — 402 response before data is served","Rate limiting or upstream crates.io unavailability"],"whenToPreferThis":"Use this endpoint when you need programmatic, pay-per-call access to Rust crate version history without setting up a crates.io API key or account. Ideal for AI agents that need to resolve dependency versions, audit yanked releases, or check release timelines on demand.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-27T19:05:34.414Z","isFirstParty":false,"canonicalSlug":"fastx402-crate-versions-lookup-381a7b90"}