Blackwall

A pre-signature payment-risk oracle for AI agents. GO / HOLD / STOP before your agent signs an x402 payment — from counterparty reputation and price-anomaly detection. Verdict only, never custody.

curl -sS -X POST https://agent-egress-proxy.onrender.com/v1/forecast-payment \
  -H 'content-type: application/json' \
  -d '{"counterparty":"0x…","amount":"5.00","asset":"USDC","chain":"base"}'

• Add Blackwall to your agent →3 lines: check before you sign. TypeScript, Python, curl, MCP.
• Your first settled call →One command: a real x402-settled call + a verifiable receipt, for about a cent on Base.
• What is a payment-risk oracle?The definition, and how it works in the x402 pre-signature window.
• x402 payment-risk oracles, comparedBlackwall vs endpoint-readiness vs KYT — complementary layers.
• Discovery descriptorMachine-readable x402 service card.
• /llms.txtMachine-readable summary for LLMs and agents.