Spend Gate — Coherence Gate check before an agent wallet pays an invoice
Spend Gate — Coherence Gate check before an agent wallet pays an invoice: provider trust and payload safety (real verdicts via the fleet operator lane, $0 upstream toll), price sanity (cap-only) and OmniGate delivery history vote pay/reject; coherence = |Σ w·d| / Σ w, pass needs coherence ≥ 0.6 and a pay-side consensus; Jev reviews only on a pass. Pay 0.005 USDC on Base using the fresh PAYMENT-REQUIRED challenge and caller-authorized PAYMENT-SIGNATURE.
Answeringour last check, 2026-10-31
1 of 1checks answered this week
183 msmedian answer time
$0.005listed price per call
$0.005price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://mcp-x402.onrender.com/x402/spend-gate
| Category | Market data |
|---|---|
| Provider host | mcp-x402.onrender.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-31 | valid payment request | 402 | $0.005 | 183 ms |
Example input (from the provider)
{
"body": {
"manifest_url": "https://www.npmjs.com/package/react",
"payee": "api.example.com",
"policy_cap_usdc": 0.05,
"quoted_amount": 0.01,
"tool_category": "data_lookup"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"body": {
"properties": {
"manifest_url": {
"description": "Optional npm/PyPI/crates package page URL for the payload_safety path.",
"type": "string"
},
"payee": {
"description": "Payee domain and/or endpoint URL the wallet is about to pay.",
"type": "string"
},
"policy_cap_usdc": {
"description": "Optional caller policy cap in USDC.",
"type": "number"
},
"quoted_amount": {
"description": "Quoted amount in USDC.",
"type": "number"
},
"tool_category": {
"description": "Category of the tool/service being bought (selects the v1 default cap).",
"type": "string"
}
},
"required": [
"payee",
"quoted_amount",
"tool_category"
],
"type": "object"
},
"bodyType": {
"type": "string"
},
"method": {
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type",
"example"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}