{"uid":"cap_u46CbHZdS0PRxhVP7sIbu","slug":"npm-package-metadata-lookup-09fe83ed","name":"npm Package Metadata Lookup","description":"npm package metadata (?pkg=express): latest version, license, dependency count, maintainers, dist-tags, keywords, publish dates. Returns JSON.","url":"https://clonecho.builda.company/x402/npm-package","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xHjAoYC-r5SrlZpJU0sPv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns metadata for an npm package including latest version, license, dependency count, maintainers, dist-tags, keywords, and publish dates.","exampleAgentPrompt":"Can you pull up the npm package metadata for express — I want to know the latest version, license, maintainers, and how many dependencies it has?","exampleUseCases":null,"resultDescription":"A JSON object containing the npm package's latest version number, SPDX license identifier, total dependency count, list of maintainers, dist-tags (e.g. latest, next), keywords, and publish date information.","failureModes":["Package not found on npm registry — returns error or empty result","Invalid or misspelled package name — may return 404 or null data","Private or scoped package not accessible — returns error","npm registry downtime — upstream fetch failure"],"whenToPreferThis":"Use this endpoint when you need quick structured metadata about an npm package — version, license, dependencies, maintainers — without needing to scrape the npm website or authenticate with the npm API directly. Ideal for automated dependency audits, license checks, or developer tooling pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:21:57.165Z","isFirstParty":false}