{"uid":"cap_JF9hRV6GOfTWeI6R1bUk4","slug":"yc-company-directory-lookup-383d1f47","name":"YC Company Directory Lookup","description":"Pay-per-call company registry, government, legal and B2B data tools for AI agents, from official registers and public sources. Payment: x402, USDC on Base, Solana, Arc, Polygon, Arbitrum, Monad, World Chain, Optimism, Avalanche, Celo or Stellar, or RLUSD/XRP on the XRP Ledger. No signup, no API key; a failed call is not charged.","url":"https://api.companyrecords-api.workers.dev/api/b2b/y-combinator?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":["q"],"properties":{"q":{"type":"string","description":"Company name or slug, 2 to 80 characters"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"count":1,"query":"circuithub","source":"https://yc-oss.github.io/api/companies/all.json","results":[{"name":"CircuitHub","slug":"circuithub","batch":"Winter 2012","status":"Active","website":"https://circuithub.com","industry":"Industrials","isHiring":true,"oneLiner":"On-Demand Electronics Manufacturing","teamSize":58,"locations":"London, England, United Kingdom","profileUrl":"https://www.ycombinator.com/companies/circuithub"}],"dataAsOf":"2026-10-23T08:10:12.454Z","checkedAt":"2026-10-23T09:37:29.890Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_jHsBsr4ndLgn9c16r3MA8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Searches the Y Combinator startup directory by company name or slug and returns batch, status, industry, team size, one-liner, website, and YC profile URL.","exampleAgentPrompt":"Can you look up Airbnb in the Y Combinator company directory and tell me which batch they were in, their industry, team size, and current status?","exampleUseCases":[{"title":"Verify a startup's YC credentials","prompt":"I just got a pitch from a company called Deel claiming they're Y Combinator alumni — can you check the YC directory to confirm which batch they were in and whether they're still active?"},{"title":"Research a YC company for due diligence","prompt":"I'm doing background research on Stripe — can you pull up their YC company record and tell me their batch, industry, one-liner, team size, and their official YC profile link?"},{"title":"Find a YC startup's website and contact info","prompt":"I remember hearing about a startup called Brex from YC but I lost their website — can you search the YC directory for them and get me their site and hiring status?"}],"resultDescription":"Returns a JSON object with the query string, result count, data source URL, and a results array containing each matched company's name, slug, YC batch (e.g. 'Winter 2012'), active/inactive status, website, industry category, hiring flag, one-liner description, team size, office locations, and direct YC profile URL. Also includes a dataAsOf timestamp indicating when the underlying dataset was last updated.","failureModes":["No results returned if company name doesn't match any YC portfolio company","Misspelled or abbreviated names may return zero results — try the canonical company name or slug","Data may be slightly stale as it reflects the last update of the community-maintained mirror, not real-time YC data","Very new YC batches may not yet appear in the dataset","Query string shorter than 2 characters or longer than 80 characters will be rejected"],"whenToPreferThis":"Use this endpoint when you need structured YC-specific metadata about a startup — batch, status, industry, team size — and you know the company name or slug. Prefer this over general web search when you need machine-readable YC portfolio data or want to verify YC membership programmatically. It is not suitable for non-YC companies or for searching by founder name, location, or industry category alone.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T12:43:20.196Z","isFirstParty":false,"canonicalSlug":"yc-company-directory-lookup-383d1f47"}