Prepaid credit

5 USDC on Base buys 110 calls. One payment. No per-call payment. Every paid route of this service accepts it.

How it works

1. Send 5 USDC on Base to 0x6f60659390aDA1D02B14024d8c9d0C889f2F89c3.
2. Report the transaction hash below (or POST /credit/claim with JSON {"tx":"0x…"}). The Worker reads the transfer on Base and returns your credit_id (cr_…).
3. Send X-CREDIT: cr_… on any paid route. The call is charged to the credit, returns 200, and needs no x402 payment.

Use it

curl -sS -X POST https://x402-catalog-history.ai-business-surface.workers.dev/credit/claim \
  -H 'content-type: application/json' \
  -d '{"tx":"0x"}'

# {"credit_id":"cr_9f2c…","status":"confirmed","remaining_usd":"5","calls_included":110}

curl -sS 'https://x402-catalog-history.ai-business-surface.workers.dev/check?url=https://example.com' \
  -H 'X-CREDIT: cr_9f2c…'

# 200, the full /check answer, no x402 payment

Each call is charged at that route's own price, with a 0.05 USDC minimum per call. The balance is USDC, so a 5 pack covers 110 calls at the minimum. Check the balance any time at GET /credit?id=cr_…&format=json.

Routes this credit covers

• /check, /markdown, /compat-check, /contract, /gas, /price, /reality, /random, /watch, /watchlist, /history, /changes, /changes/bundle, /compat, /guide, /pack, /pack/diff — every paid route on this Worker.

All endpoints and prices