SD
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SD
Browse Data
🔧 API v1

Build with verified data.

REST API, MCP server, and SDKs in Python, Node, Go, Ruby. Test the preview endpoint right now — no signup, no key.

✓ OpenAPI 3.1 spec
✓ Webhooks with HMAC-SHA256
✓ 99.95% uptime SLA
curl https://api.startupdata.com/v1/founders/preview
Response · 200 OK
[{"name":"Maya Okafor","company":"Lattice Bio"},
{"name":"Rina Sato","company":"Arclight Health"}]
Quickstart

From zero to first call in 3 steps.

1

Try without an account

The /preview endpoint returns 10 live rows. No auth, no signup.

curl https://api.startupdata.com/v1/founders/preview
2

Get an API key

Sign up, hit Settings → API Keys, generate. Keys are scoped per workspace.

export SD_API_KEY=sk_live_…
3

Make your first authenticated call

Pass the key as a Bearer token. All endpoints use the same auth.

curl https://api.startupdata.com/v1/founders \ -H "Authorization: Bearer $SD_API_KEY" \ -G --data-urlencode "stage=series_a"
Reference

All endpoints

GET/v1/foundersSearch verified founders by stage, sector, geo.🔒 Auth
GET/v1/founders/previewReturns 10 sample rows. No auth required.🌐 Public
GET/v1/investorsSearch investors by check size, focus, geo.🔒 Auth
GET/v1/companies/{id}Company snapshot with leadership, funding.🔒 Auth
POST/v1/exportsTrigger async CSV/Sheets export.🔒 Auth
POST/v1/webhooksSubscribe to raise / hire / pivot events.🔒 Auth
MCP Server

Native tool for Claude.

Add StartupData to Claude's tools and let the model query verified data inline.

  • ✓ Hosted server — no infra to run
  • ✓ 12 tools: search, lookup, watch, ask
  • ✓ Reasoning-optimized response shape
  • ✓ Per-workspace usage caps
Read the MCP guide →
# Add to Claude
$ claude mcp add startupdata

# Ask naturally
> Top 5 series A healthtech?

# Claude calls startupdata.search()
✓ 5 verified founders

Ready to build?

Start with the preview endpoint or get an API key. No credit card required.

Get started →