Coherence · Spend Gate

Spend Gate — the Coherence Gate for agent wallet payments, fronted by OmniGate: four independent paths (provider trust, payload safety, price sanity vs cap, OmniGate delivery history) vote pay/reject on a payee + quoted USDC amount before the wallet pays; coherence = |sum(w*d)| / sum(w), gate_pass requires coherence >= 0.6 AND a pay-side consensus; Jev reviews only on a pass. Moves no funds.

price

0.0050 USDC

rail

Base

facilitator

OMNIGATE

method

POST

endpoint https://mcp-x402.onrender.com/gate/coherence/spend-gate

payTo 0x5bbd32e0478e49a7540ef2d760e0b0f9aa6328b2

asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

indexed 2026-10-25T20:10:49.000Z

Live 402 challenge

Hits the real endpoint without paying and shows exactly what it demands. Nothing is charged.

Pay from your agent

import { wrapFetchWithPayment } from "@x402/fetch";
import { ExactEvmScheme } from "@x402/evm";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.BUYER_PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, { schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(signer) }] });

const res = await pay("https://mcp-x402.onrender.com/gate/coherence/spend-gate", { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify({ "payee": "api.example.com", "quoted_amount": 0.01, "tool_category": "data_lookup" }) });
console.log(await res.json(), res.headers.get("PAYMENT-RESPONSE"));

Example input

{
  "payee": "api.example.com",
  "quoted_amount": 0.01,
  "tool_category": "data_lookup"
}

Example output

{
  "product": "Spend Gate",
  "coherence": 1,
  "consensus": "pay",
  "gate_pass": true,
  "paths": [],
  "jev": {}
}