VC Data API
for founder sourcing.
Webhooks for stealth-founder transitions, second-time and exited operators leaving their next role, portfolio activity and investor signals. The data layer for an internal sourcing tool — not another aggregator dashboard.
How an internal sourcing tool runs on our API.
Five loops — stealth detection, repeat-founder watch, thesis sourcing, enrichment, portfolio monitoring — wired into the same endpoint surface. Each one is what your engineering team plugs into the analyst stack.
Catch stealth founders the day they transition
Subscribe high-pedigree operators to the Watcher. When one updates their title to Stealth, Founder, or Building Something New — or leaves a notable company without a publicly named next role — we POST the delta to your endpoint.
// powered by Watcher API · People Search
- stealth-title transitions
- departure-without-next signal
- first-hire detection at unnamed cos
Track second-time & exited founders
Build a saved query for operators who have founded before — with an optional exit, acquisition or IPO flag. Subscribe the query: when one of them leaves their current role, gets re-listed as a founder, or starts hiring, the webhook fires.
// powered by People Search · Watcher
- ex-founders w/ exit flag
- serial-founder filter
- post-acquisition departures
Run your thesis as a saved query
Express the operator and company profile your fund backs — past employer, school, tenure, investor overlap, funding stage, headcount delta, geo. Save as JSON, run on a schedule, subscribe to the Watcher.
// powered by People Search · Company Search
- 340+ filters across people & co.
- investor-overlap queries
- JSON-portable thesis logic
Full pedigree, instantly
Profile URL → 90+ datapoints. Career history, education, prior funding rounds, exits, acquirers, investor network, team pedigree. Pipe the JSON to your scoring model.
// powered by People & Company Enrichment
- career history & exits
- funding & investor network
- real-time refresh on demand
Portfolio & target-list signals
Subscribe portfolio companies and target accounts. Webhooks fire on funding events, headcount spikes, key-exec departures and watchlist movements.
// powered by Watcher API
- portfolio activity signals
- competitor-funding alerts
- exec-departure events
The endpoints VC sourcing tools call.
Four routes, one credit pool. Funds typically ship Search + Watcher first, layer Enrichment and the MCP server once analysts are using the tool daily.
Watcher API (Webhooks)
The engine of stealth and repeat-founder detection. Subscribe operators, target companies and saved theses; we POST deltas when signals fire.
POST /v1/watch → your_endpointPeople Search API
Filter founders by past employer, school, tenure, exit flag, investor and 60+ other dimensions. Real-time.
POST /v1/people/searchCompany Search API
75M+ companies with funding stage, investor list, headcount delta and tech-stack filters.
POST /v1/companies/searchMCP Server
Expose Watcher · Search · Enrich as native tools to Claude or your in-house investment agent.
TOOL watch · search · enrich
GDPR compliant
Full compliance with European data protection regulations. Your data privacy is our priority.
CCPA compliant
Adhering to California Consumer Privacy Act standards for maximum data protection.
Publicly available data
All data sourced from publicly available and verified sources, ensuring ethical collection.
A combination of signals: title transitions to Stealth, Founder, or Building Something New; departures from notable companies without a publicly named next role; first hires at unnamed or freshly-incorporated entities; social-post signals that pre-date a public launch. Subscribe the operator profile and the event lands on your endpoint within minutes.
Yes. Profiles are enriched with prior-founding signals — companies founded, exit status, acquirer when public. Build a saved query for operators with at least one prior exit, subscribe it to the Watcher, and you get a webhook the moment one transitions out of their current role.
Yes. REST for synchronous calls from your platform, webhooks for streaming events into Snowflake / BigQuery / Postgres, MCP for exposing the data layer to Claude or an internal copilot. Most VC funds run all three in combination.
Stealth-founder webhooks piped into Slack; repeat-founder watchlists that fire when an exited operator leaves their post-acquisition role; portfolio monitoring ingesting watcher events into Snowflake or Postgres; analyst-facing agents pulling founder pedigrees on demand.
Sourcing platforms force you into their taxonomy and surface the same deals to every customer. Your fund's edge is the thesis, the filter logic and the timing — those have to live inside your tool. We're the data layer underneath.
Search and enrichment p50 is 142ms. Watcher events fire within minutes of detection. Enterprise plans get a contractual uptime SLA and dedicated infra — talk to our team if you need it.
Build with us. Now.
Get an API key in 60 seconds. Plug your AI agent into 800M+ verified profiles and 75M+ companies — today.