Developer APIs

B2B Signal Data APIs

One API key, 700+ signals per company. Enrich domains, contacts, monitor SEC filings, and track hiring velocity in real time.

Try the API Quickstart Guide →

API Products

Each endpoint returns structured, AI-enriched signal data. Authenticate with a single X-API-KEY header.

Company Enrichment API

21M+ domains

Pass a domain, get back 700+ signals: financials, workforce, technographics, social activity, SEC filings, and more. Sub-200ms, bulk endpoint available.

GET /v1/companies/enrich

Contact Enrichment API

250M+ contacts

Enrich contacts with person-level signals (job changes, LinkedIn activity, milestones) layered on top of full company intelligence.

GET /v1/contacts/enrich

SEC Filing API

4,500 public cos

AI-parsed 10-K, 10-Q, and 8-K filings with 70+ subtypes. Structured data, not raw EDGAR XML.

GET /v1/companies/enrich

Hiring Data API

21M+ domains

Real-time hiring velocity, department breakdowns, and trend analysis. Detect when companies are scaling or contracting.

GET /v1/companies/enrich

Quick Reference

Base URL	https://signals.autobound.ai
Auth	X-API-KEY: your_api_key
Format	JSON (application/json)
Rate Limit	Varies by plan, bulk endpoints available
Latency	Sub-200ms (p95)

Start building

Get an API key and make your first call in under 2 minutes.

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