{"uid":"cap_BtQLOrrFqOZKtDm3kkwcQ","slug":"pennyrail-npm-latest-package-info-c771755d","name":"PennyRail npm Latest Package Info","description":"Machine-readable settlement service","url":"https://pennyrail.vercel.app/api/p/network/npm.latest--npm-latest-package-info","method":"POST","headers":{},"bodySchema":{"type":"object","required":["input"],"properties":{"input":{"type":"string"}}},"responseSchema":{"type":"object","additionalProperties":true},"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_2YuwlPObKX_XtVHfZJ4JM","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":"Fetches the latest package metadata from npm for a given package name, delivered as a paid machine-readable settlement service.","exampleAgentPrompt":"Can you look up the latest npm package info for 'react' — I need to know the current version and package metadata?","exampleUseCases":[{"title":"Check latest version of a dependency","prompt":"What is the latest published version of the 'axios' package on npm?"},{"title":"Audit a project's outdated packages","prompt":"Look up the current npm metadata for 'express' so I can see if we're behind on our project's dependency."},{"title":"Validate a package exists before installing","prompt":"Can you confirm that 'zod' exists on npm and fetch its latest package info including description and version?"}],"resultDescription":"Returns a JSON object containing the latest npm registry metadata for the requested package, which may include fields such as the current version number, package description, author, repository URL, dependencies, and publication timestamp.","failureModes":["Package name not found on npm registry — returns error or empty result","Malformed or empty input string — validation error","npm registry is unreachable or rate-limited — service may return timeout or upstream error","Payment failure via x402 protocol — request not processed"],"whenToPreferThis":"Use this endpoint when an AI agent needs to programmatically fetch the latest npm package metadata as part of a paid, metered workflow — especially in automated pipelines where a lightweight per-call cost ($0.003 USDC) is acceptable and a machine-readable settlement mechanism (x402) is required. Prefer alternatives like direct npm registry API calls when authentication and payment infrastructure are not in place.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:34:10.466Z","isFirstParty":false}