Integration ask: Cleared Check before pay (x402 trust gateway)

## Ask

Cleared Index is a trust gateway for agent payments on Base (Check → Gateway → Witness).

We already route toward CDP / list Coinbase Developer Platform endpoints.

**Request:** Consider documenting a pre-pay Cleared Check (or linking our drop-in) in AgentKit / x402 examples so agents score before spend.

- Demo tape: https://clearedindex.com/tape
- Drop-in / MCP: https://clearedindex.com/drop-in
- Check API: \`GET https://clearedindex.com/api/cleared/check?origin=…&probe=false\`

Happy to PR docs if useful.

— Taylor Good · Cleared Index (https://clearedindex.com)