Signals API
Real-time REST API for searching, enriching, and streaming B2B buying signals across 250M+ contacts and 50M+ companies.
The Signals API gives you direct programmatic access to Autobound's full signal database — 30+ signal types covering job changes, funding events, SEC filings, LinkedIn activity, hiring trends, website intelligence, and more — all queryable in real time via REST.
What You Can Do
- Search semantically — Ask natural language questions like "companies investing in AI infrastructure" and get back ranked, structured signals across your entire target market. No SQL, no rigid filters required.
- Enrich contacts and companies — Pass an email, LinkedIn URL, or company domain and get back every recent signal we have on that entity in a single call.
- Stream via webhooks — Subscribe to signal events and have them pushed to your endpoint in real time as Autobound ingests new data. No polling.
- Score intent — Aggregate signals across a company or contact to produce a relevance score relative to your product or query. For example: if a target company's employees are publicly discussing their CRM pain points and their CEO mentioned sales process improvements in an earnings call, those signals stack to produce a high intent score for a CRM vendor.
- Use via MCP — All Signals API capabilities are available through the Autobound MCP server, letting AI agents and sales tools access signals without writing direct API calls.
How This Differs from Our Other Products
The Signals API is Autobound's next-generation data access layer — built to replace the older Generate Insights API with faster response times, richer data, more flexible querying, and new capabilities like webhooks and semantic search.
| Signals API | Signal Database | Generate Insights API | |
|---|---|---|---|
| What you get | Raw structured signals, queryable in real time | Monthly bulk dump of all signals | LLM-summarized, ranked insights |
| Delivery | REST + webhooks | GCS flat files (JSONL/Parquet) | REST |
| Search | Semantic + structured filters | Not applicable | By contact/company only |
| Best for | App enrichment, intent scoring, custom pipelines | Data warehouse ingestion, powering your own engine | Ready-to-use sales context for AI email writers |
| Status | ✅ Current | ✅ Current | ⚠️ Legacy |
If you're currently using the Generate Insights API, the Signals API gives you access to the same underlying data with more control, better performance, and new capabilities not available in the legacy API.
Signal Types
The Signals API exposes all 30+ signal types in the Autobound database — from SEC filings and earnings transcripts to LinkedIn posts, hiring trends, and website intelligence. See the full Signal Catalog for slugs, coverage details, and refresh cadence.
Authentication
All requests require an API key. Pass it as a header:
x-api-key: YOUR_API_KEYOr as a Bearer token:
Authorization: Bearer YOUR_API_KEYGet your API key from the Autobound Portal.
Base URL
https://signals.autobound.aiCredits
Most endpoints consume 1 credit per API call. Credit-free endpoints (trending signals, signal types list, account info) are marked in the Endpoint Reference. All responses include credit usage headers so you always know where you stand:
x-credits-used: 42
x-credits-remaining: 9958
x-credits-limit: 10000
x-credits-reset: 2026-04-01T00:00:00.000ZSee Credits & Pricing for full details.
Next Steps
- Quickstart — Make your first API call in 5 minutes
- Endpoint Reference — Full docs for every endpoint
- Webhooks — Push signal events to your system in real time
- Signal Catalog — Browse all 30+ signal types
Updated about 7 hours ago