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Prospct.io
Reference

REST API

The Prospct REST API is the same interface our own app uses. Every workspace ships with a free API key — generate one from Settings → Developers.

Authentication

Every request must include your API key as a Bearer token:

Authorization: Bearer $PROSPCT_API_KEY

Endpoints

GET/v1/contacts/search

Search 300M+ verified contacts with 50+ filters.

curl "https://api.prospct.io/v1/contacts/search?title=VP%20Sales&country=US&headcount=200-500" \
  -H "Authorization: Bearer $PROSPCT_API_KEY"
POST/v1/contacts/reveal

Reveal a contact's verified email and mobile.

curl -X POST "https://api.prospct.io/v1/contacts/reveal" \
  -H "Authorization: Bearer $PROSPCT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "linkedin_url": "https://linkedin.com/in/jane-doe" }'
POST/v1/emails/verify

Waterfall-verify a single email or a batch of up to 1,000.

curl -X POST "https://api.prospct.io/v1/emails/verify" \
  -H "Authorization: Bearer $PROSPCT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "emails": ["jane@acme.com","john@acme.com"] }'
GET/v1/companies/{domain}

Fetch firmographics, tech stack and signals for any domain.

curl "https://api.prospct.io/v1/companies/acme.com" \
  -H "Authorization: Bearer $PROSPCT_API_KEY"
GET/v1/signals

Stream real-time buying signals: funding, hiring, exec moves, tech changes.

curl "https://api.prospct.io/v1/signals?type=funding&since=2026-06-01" \
  -H "Authorization: Bearer $PROSPCT_API_KEY"

Rate limits

1,000 requests/min on Growth, 5,000 requests/min on Scale, unlimited on Enterprise. Every response includes X-RateLimit-Remaining and X-RateLimit-Reset.