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YC Company Directory Lookup
x402
YC Company Directory Lookup is a paid API for AI agents from api.companyrecords-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).
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.
Price / call$0.002
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Verify a startup's YC credentials
“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?”
Research a YC company for due diligence
“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?”
Find a YC startup's website and contact info
“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?”
Technical details
Endpoint
GEThttps://api.companyrecords-api.workers.dev/api/b2b/y-combinator?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"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"
}
}Tags
x402
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