# BlackChain Signal

BlackChain Signal is a pay-per-request sponsor strategy API from BlackChain Collective.

## Paid resource

- Endpoint: GET /api/x402/signal
- Price: 0.05 USDC per successful response
- Settlement: Algorand through the GoPlausible x402 facilitator
- Discovery: x402 Bazaar
- Challenge tag: x402-global-challenge

## Query parameters

- focus: ai, web3, workforce, or financial-inclusion
- audience: students, founders, creators, or community
- region: plain-text location, maximum 80 characters
- ask: 25000, 50000, 75000, or 100000
- organization: plain-text organization name, maximum 100 characters

## What payment unlocks

The JSON response contains a sponsor thesis, recommended ask, funded activation, sponsor asset package, measurement plan, outreach opening, next action, and truth guardrails.

## Example

GET /api/x402/signal?focus=web3&audience=founders&region=Washington%2C%20D.C.&ask=50000&organization=BlackChain%20Collective

An unpaid request returns HTTP 402 with machine-readable payment requirements. A compatible x402 client pays and retries the same request.