# ExactGate x402 Validator

Deterministic Base mainnet transaction diagnostics paid per call with x402 USDC.

- OpenAPI: https://exactgate-x402.insertnameheree.chatgpt.site/openapi.json
- x402 manifest: https://exactgate-x402.insertnameheree.chatgpt.site/.well-known/x402
- Health: https://exactgate-x402.insertnameheree.chatgpt.site/health
- GET https://exactgate-x402.insertnameheree.chatgpt.site/v1/catalog — free discovery and integration catalog
- GET https://exactgate-x402.insertnameheree.chatgpt.site/v1/base/network-health — $0.001
- GET https://exactgate-x402.insertnameheree.chatgpt.site/v1/base/receipt?txHash=0x... — $0.005
- POST https://exactgate-x402.insertnameheree.chatgpt.site/v1/base/preflight — $0.020

Preflight JSON: {"to":"0x...","from":"0x...","data":"0x","value":"0x0"}. ExactGate never signs or broadcasts transactions.