One Signal Data API
One key, one base URL, 700+ signals per company. Search companies and contacts by signal activity, enrich any domain or email, and tap buyer intent across 38,000+ topics.
The Endpoints
One API, five endpoint groups. Each returns structured, AI-enriched signal data. Authenticate with a single X-API-KEY header.
Pass a domain, get back every signal on file: financials, hiring trends, SEC filings, social activity, news, and more. One call, sub-200ms.
POST /v1/companies/enrichAPI reference →Enrich a contact by email or LinkedIn URL with person-level signals: job changes, LinkedIn posts and comments, milestones, and speaking appearances.
POST /v1/contacts/enrichAPI reference →Find companies or contacts by signal activity. Filter by signal type, date range, and content inside social posts: tech mentioned, competitors, pain points, initiatives.
POST /v1/companies/searchAPI reference →Search 38,000+ B2B intent topics, find companies and contacts showing purchase intent, pull per-company intent timelines, and run bulk exports.
POST /v1/buyer-intent/contactsAPI reference →Verify any email for deliverability, single or up to 1,000 per bulk call. Intent contacts also ship with email_validation_status pre-attached, so you can filter to verified-only.
POST /v1/emails/verifyAPI reference →Deep coverage, same endpoints
None of these are separate APIs. They're signal types (700+ per company across 35+ sources) returned by the enrich and search endpoints above.
SEC Filings
4,500 public cosAI-parsed 10-K, 10-Q, 8-K, 6-K, and 20-F filings - structured, not raw EDGAR XML.
Hiring & Headcount
6M+ signalsJob posting volume, hiring velocity, department breakdowns, and employee growth trends.
Financial Events
Earnings + fundingEarnings call transcripts, earnings beats and margin changes, and Form D fundraising filings.
Social Activity
25M+ postsLinkedIn posts and comments, Twitter/X posts, and YouTube uploads by companies and contacts.
News & Community
1.3M+ signalsPress and news articles, Reddit and Hacker News discussions, and podcast appearances.
People Moves
26M+ milestonesJob changes, promotions, career milestones, and conference speaking appearances.
Web & Product Intel
45M+ signalsWebsite and tech-stack changes, SEO traffic shifts, GitHub activity, G2 reviews, and Glassdoor ratings.
Government & IP
400K+ signalsFederal contract awards, patent filings and grants, and new business formations.
Platform scale
The data behind the APIs
0+
Signal types available
0M+
Companies
0M+
Contacts
<0
ms response (p95)
Quick Reference
Here is the most common first call: enrich a company by domain, filtered to two signal types. Full parameters are in the enrich reference.
curl -X POST 'https://signals.autobound.ai/v1/companies/enrich' \
-H 'X-API-KEY: your_api_key' \
-H 'Content-Type: application/json' \
-d '{
"domain": "stripe.com",
"signal_types": ["news", "hiring-trends"],
"limit": 25
}'The response (truncated here) has four parts: the resolved company, the matching signals, per-type counts, and a coverage envelope.
{
"company": {
"name": "Stripe",
"domain": "stripe.com",
"linkedin_url": "https://linkedin.com/company/stripe"
},
"signals": [
{
"signal_id": "sig_abc123",
"signal_type": "news",
"signal_subtype": "companyNews",
"signal_name": "",
"detected_at": "2026-07-14T09:30:00Z",
"association": "company",
"company": { "name": "Stripe", "domain": "stripe.com" },
"data": { "summary": "Stripe announces expanded payments partnership..." }
}
],
"signal_summary": { "news": 18, "hiring-trends": 7 },
"coverage": {
"total_before_filters": 742,
"total_after_filters": 25,
"signal_types_available": ["news", "hiring-trends", "linkedin-posts"],
"date_range": {
"earliest": "2024-01-08T00:00:00Z",
"latest": "2026-08-05T16:12:00Z"
}
}
}Two things to notice: signal_name is often empty (fall back to data.summary), and coverage shows how many signals exist before and after your filters, so you know when to widen them.
Zero-result requests are never charged. Credit usage is returned in response headers on every call.
Four ways to get the data
Same signals, delivered the way your stack consumes them.
REST API
Real-time search, enrich, and intent endpoints. Sub-200ms JSON responses.
GCS Push
Scheduled signal files delivered to a Google Cloud Storage bucket you can sync from.
Generate Insights API
Signals distilled into ready-to-use insights for personalized outreach.
Flat File
Bulk exports for evaluation, backfills, and warehouse loads.