# First Dollar Desk
> Third-party $1 human checkout and agent HTTP 402 ($0.05+ USDC on Base). Self-pay is rejected.

## Goal (free)
- GET https://first-dollar-desk.undone-k.workers.dev/api/goal — live flags, checkout URLs, MCP endpoint

## Human
- Pay: https://buy.stripe.com/28E14n0EV9Ns11U9vu1ND3C
- Short: https://first-dollar-desk.undone-k.workers.dev/human

## Agent
- Verify (402): https://first-dollar-desk.undone-k.workers.dev/api/agent/verify — USDC on Base eip155:8453, payTo 0x5db511706FB6317cd23A7655F67450c5AC6e6AA2, min $0.05 (50000 atomic) or $1 (1000000 atomic)
- Unpaid GET or POST /api/agent/verify returns HTTP 402 with x402 payment requirements
- Human-card fallback (not agent-rail): https://buy.stripe.com/9B65kD9brf7M4e60YY1ND3D
- Catalog: https://first-dollar-desk.undone-k.workers.dev/.well-known/x402.json
- MCP: https://first-dollar-desk.undone-k.workers.dev/mcp
- Smithery card: https://first-dollar-desk.undone-k.workers.dev/.well-known/mcp/server-card.json
- Indexed on x402scan and listed on agent402.tools; PayAPI Market listing is queued for a third-party canary
- Facilitators: PayAI (https://facilitator.payai.network) and CDP x402

## Ledger
- GET /api/ledger
- GET /api/goal (goal flags + checkout URLs for agents)