# Mekong x402 Fleet — llms.txt

> 45 pay-per-call x402 APIs on Base. No signup, no API key. Pay USDC per call.
> Agent wallet: 0x198f3895551B309fF5C5F59e690FB0823d10EA93

## How to use
1. GET any endpoint without payment → receive HTTP 402 with payment instructions
2. Sign USDC transfer on Base (exact amount, 6 decimals) to the payTo address
3. Base64 the signed x402 payload, retry with header `PAYMENT-SIGNATURE` (v2) or `X-PAYMENT` (v1)
4. Receive result + `payment-response` header with tx hash

## Pricing highlights
- /brief: $0.05/call (news + trends + sentiment bundle). $0.01 for first 100 calls. 10% cashback credit.
- /aiverdict: $0.01/call (AI token verdict)
- /enrich: $0.02/call (domain enrichment)
- /websearch: $0.010/call (web search)
- /aisearch: $0.007/call (AI search)
- /tokendd: $1.50/call (token due diligence job)

## Full catalog
- Human docs: https://api.mekongtradeintel.com/tools/
- Machine catalog: https://api.mekongtradeintel.com/.well-known/x402
- OpenAPI: https://api.mekongtradeintel.com/openapi.json (per-endpoint)
- Proof of payments: https://api.mekongtradeintel.com/tools/proof.html
- Demand intel: https://api.mekongtradeintel.com/tools/demandintel.html

## Trust
- All settlements verifiable on Basescan
- First-call insurance: failed first paid call → free retry credit
- 10% cashback on every paid call
- Price lock available for high-volume buyers