> ## Documentation Index
> Fetch the complete documentation index at: https://apidoc.cufinder.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Signals APIs

> The Signals APIs turn CUFinder's buying-signal graph into live, queryable endpoints. Pull a company's social activity, list the people or companies that just triggered a specific signal, and track job changes across any date range.

The **Signals APIs** expose CUFinder's buying-signal data as simple REST endpoints. Instead of browsing signals one page at a time, you can query them programmatically and feed the results straight into your CRM, outreach, or data pipeline.

Every endpoint is a `POST` to `https://api.cufinder.io/v2/<code>`, authenticated with your `x-api-key` header, and returns the standard `{ "status": 1, "data": { ... } }` envelope. All four endpoints support a `page` parameter for pagination.

## Endpoints

<CardGroup cols={2}>
  <Card title="Company Activity" icon="rss" href="/buying-signals/signals-apis/company-activity">
    Recent social posts for a company.
  </Card>

  <Card title="People Signals" icon="users" href="/buying-signals/signals-apis/people-signals">
    People at companies that just triggered a signal.
  </Card>

  <Card title="Company Signals" icon="building" href="/buying-signals/signals-apis/company-signals">
    Companies that just triggered a signal.
  </Card>

  <Card title="Job Changes" icon="arrows-exchange" href="/buying-signals/signals-apis/job-changes">
    New jobs, promotions, and title moves over a date range.
  </Card>
</CardGroup>

## Authentication

Send your API key in the `x-api-key` header on every request. You can find it under **Account » API key** in the [dashboard](https://dashboard.cufinder.io/auth/signup/).

<Card title="Get your API key" icon="rocket" href="https://dashboard.cufinder.io/auth/signup/" horizontal>
  Start free and query buying signals in minutes. No credit card required.
</Card>