Before You Begin
Obtain your API key from the Autobound Portal. This key works across all Signal API endpoints.
Three Core API Patterns
1. Semantic Search
Use the search endpoint to find signals using natural language queries. Your query is embedded as a vector to find relevant signals across the entire database. You can combine natural language queries with structured filters like signal type, company size, and date ranges.
Endpoint: POST https://signals.autobound.ai/v1/signals/search
Credit cost: 1 credit per result returned (count-only queries are free)
Example Request:
{ "query": "companies investing in AI infrastructure", "signal_types": ["news", "hiring-trends"], "detected_after": "2026-01-01T00:00:00Z", "limit": 20}
What you get back:
score(0-1) — How relevant the signal is to your querysignal_typeandsignal_subtype— What kind of signal it isdata.summary— A human-readable description of the signalcompany.domain— The company domain for CRM matching
2. Company Enrichment
When you already know your target company, pass a domain (or company name or LinkedIn URL) to retrieve all available signals, optionally filtered by type and date.
Endpoint: POST https://signals.autobound.ai/v1/companies/enrich
Credit cost: 1 credit per company enriched
Example Request:
{ "domain": "salesforce.com", "signal_types": ["news", "hiring-trends", "earnings-transcripts"], "detected_after": "2026-01-01T00:00:00Z", "limit": 50}
What you get back:
signal_summary— Counts broken down by signal typesignals— Full array of matching signals sorted by detection dateCompany metadata including name, domain, industry, and employee count
3. Contact Enrichment
This endpoint returns both contact-level signals (like job changes and LinkedIn posts) and signals from the contact's employer, all in one call. You need either a work email or LinkedIn URL.
Endpoint: POST https://signals.autobound.ai/v1/contacts/enrich
Credit cost: 1 credit per contact enriched
Example Request:
{ "contact_email": "jane.smith@acme.com", "include_company_signals": true, "signal_types": ["work-milestones", "linkedin-post-contact"], "limit": 20}
What you get back:
contact_signals— Signals specific to the individualcompany_signals— Signals from their employerResolved identity details like title and LinkedIn URL
Credit Usage Summary
For Signal API endpoints, most operations cost 1 credit per result or record. The notable exceptions are intent scoring (5 credits per request) and metadata endpoints (free). The Generate Content API costs 2 credits per content item. See the full credit breakdown in the API Authentication, Credits, and Rate Limits article.