Signal API Endpoint
Company Enrichment
700+ Signals Per Domain
Pass a domain, get back everything: financials, workforce, website & technology updates, social activity, SEC filings, and market signals. One call, sub-200ms.
What you get
A single enrichment call returns every signal we have on a company - across 35+ signal categories from 35+ sources.
Financials
Revenue, funding, valuation, SEC filings
Workforce
Headcount, hiring velocity, department breakdown
Website Intelligence
Site content changes, technology updates
Social Activity
LinkedIn posts, engagement, content themes
Leadership
Executive changes, new hires, departures
Product
Launches, feature updates, pricing changes
Market
Partnerships, awards, industry recognition
Firmographics
Industry, size, location, subsidiaries
Companies covered
Signals per company
Response time (p95)
Data sources
Example Request
One POST to /v1/companies/enrich pulls every signal we have on a company. Here we ask for the 50 most recent news, hiring, and LinkedIn signals for notion.so.
curl -X POST \
'https://signals.autobound.ai/v1/companies/enrich' \
-H 'X-API-KEY: your_api_key' \
-H 'Content-Type: application/json' \
-d '{
"domain": "notion.so",
"signal_types": ["news", "hiring-trends", "linkedin-post-company"],
"limit": 50
}'Response
Each signal carries its plain-English summary in data.summary. The coverage block shows how many signals exist before and after your filters, and credits are reported in the x-credits-charged response header.
{
"company": {
"name": "Notion",
"domain": "notion.so",
"linkedin_url": "https://linkedin.com/company/notionhq"
},
"signals": [
{
"signal_id": "sig_abc123",
"signal_type": "hiring-trends",
"signal_subtype": "hiringTrends",
"signal_name": "",
"detected_at": "2026-07-01T12:00:00Z",
"association": "company",
"company": { "name": "Notion", "domain": "notion.so" },
"data": { "summary": "Engineering openings up 34% over 30 days" }
},
{
"signal_id": "sig_def456",
"signal_type": "news",
"signal_subtype": "companyNews",
"signal_name": "Notion launches Notion Mail",
"detected_at": "2026-06-28T09:30:00Z",
"association": "company",
"company": { "name": "Notion", "domain": "notion.so" },
"data": { "summary": "Launched Notion Mail - first email client" }
}
],
"signal_summary": {
"hiring-trends": 4,
"news": 12,
"linkedin-post-company": 9
},
"coverage": {
"total_before_filters": 412,
"total_after_filters": 25,
"signal_types_available": ["news", "hiring-trends", "linkedin-post-company"],
"date_range": {
"earliest": "2024-02-11T00:00:00Z",
"latest": "2026-07-01T12:00:00Z"
}
}
}Full request/response schema →
Identify the company by domain, company_name, or linkedin_url. Filter with signal_types and detected_after; up to 500 signals per call.
Not sure which company to enrich? Find companies by recent signal activity with company search. Browse every valid signal_types value with the signal types endpoint.
Frequently Asked Questions
What data does the company enrichment endpoint return?
The API returns 700+ signals per domain including financials (revenue, funding, SEC filings), workforce data (headcount, hiring velocity, department breakdown), website intelligence (site content and technology updates), social activity (LinkedIn posts, engagement), leadership changes, product launches, and market signals.
How fresh is the company enrichment data?
Signal freshness varies by type. Social activity and hiring signals refresh daily. SEC filings update within 24 hours of EDGAR publication. Firmographic data refreshes weekly. All timestamps are included in the response so you know exactly when each signal was last observed.
How much does enrichment cost?
2 credits per signal returned, billed per row. Use the signal_types and limit parameters to control how many signals come back. Responses with zero results are never charged, and credit usage is returned in response headers on every call.
What format does the API use for authentication?
Pass your API key in an X-API-KEY header, or as Authorization: Bearer <key>. You can generate your API key from the developer portal at signalapi.autobound.ai. No OAuth flow required.
Enrich your first domain
Get an API key and see 700+ signals on any company in seconds.