# cabrini.ai — agent integration
Market data API priced per call. No API key, no signup, no subscription.

## Try before paying
GET https://cabrini.ai/v1/sample — real bars, free, no parameters.

## Pay
x402 v2 over HTTP. Request a paid endpoint, read PAYMENT-REQUIRED on the 402,
sign the USDC transfer on Base, retry with X-PAYMENT. Settlement happens only
after the data is ready, so a failed query is never charged.

## Fastest path
pip install cabrini   # handles signing and retry automatically

## Discovery
- Manifest:   https://cabrini.ai/.well-known/x402
- Pricing:    https://cabrini.ai/v1/pricing
- OpenAPI:    https://cabrini.ai/openapi.json
- MCP:        https://cabrini.ai/mcp (streamable HTTP)
- Agent card: https://cabrini.ai/.well-known/agent-card.json
- Guide:      https://cabrini.ai/agents

## Data
All US equities, 2003-09 to present. Intraday bars 3m-240m, daily bars,
SEC EDGAR fundamentals, filings, insider transactions, splits.
Paid requests are not rate limited.