Verify signed x402 payments; treasury-scoped settlement is irreversible.
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IRREVERSIBLE SIDE EFFECT: forwards the envelope to POST https://x402-agent-pay.com/facilitator/settle. The existing facilitator first re-runs verify(), then refuses PAYEE_NOT_SERVED_HERE unless payTo is the AgentPay treasury (0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 on Base / 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG on Solana), then broadcasts via Coinbase CDP and returns a transaction hash. Malformed, unsigned, out-of-scope, or unverified payloads are rejected before any external transfer. This adapter never signs, never holds keys, and never bypasses those gates. Do not call this as a dry run.
Exact envelope accepted by POST /facilitator/verify and /facilitator/settle. The live Flask unpacker is liberal (v1/v2 names). This schema documents the supported request body and still forwards extra x402 fields the upstream already understands via nested objects.
The server marks this tool as destructive. Running it may delete or overwrite data on the server or in any account you connected with your headers.
IRREVERSIBLE SIDE EFFECT: forwards the envelope to POST https://x402-agent-pay.com/facilitator/settle. The existing facilitator first re-runs verify(), then refuses PAYEE_NOT_SERVED_HERE unless payTo is the AgentPay treasury (0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 on Base / 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG on Solana), then broadcasts via Coinbase CDP and returns a transaction hash. Malformed, unsigned, out-of-scope, or unverified payloads are rejected before any external transfer. This adapter never signs, never holds keys, and never bypasses those gates. Do not call this as a dry run.
| Argument | Type | Description |
|---|---|---|
| body* | object | Exact envelope accepted by POST /facilitator/verify and /facilitator/settle. The live Flask unpacker is liberal (v1/v2 names). This schema documents the supported request body and still forwards extra x402 fields the upstream already understands via nested objects. |
{
"type": "object",
"required": [
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"x402Version": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
},
"paymentPayload": {
"anyOf": [
{
"type": "object",
"properties": {
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"payload": {
"anyOf": [
{
"type": "object",
"properties": {
"signature": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "EIP-712 signature over the authorization, or SVM payload signature."
},
"authorization": {
"anyOf": [
{
"type": "object",
"properties": {
"to": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payee address. Settlement requires the AgentPay treasury."
},
"from": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payer address recovered from the EIP-712 signature."
},
"nonce": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"value": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "USDC atomic units (6 decimals) authorized by the signature."
},
"validAfter": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
},
"validBefore": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"accepted": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"x402Version": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payment_payload": {
"anyOf": [
{
"type": "object",
"properties": {
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"payload": {
"anyOf": [
{
"type": "object",
"properties": {
"signature": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "EIP-712 signature over the authorization, or SVM payload signature."
},
"authorization": {
"anyOf": [
{
"type": "object",
"properties": {
"to": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payee address. Settlement requires the AgentPay treasury."
},
"from": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payer address recovered from the EIP-712 signature."
},
"nonce": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"value": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "USDC atomic units (6 decimals) authorized by the signature."
},
"validAfter": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
},
"validBefore": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"accepted": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"x402Version": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"paymentRequirements": {
"anyOf": [
{
"type": "object",
"properties": {
"asset": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"extra": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payTo": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Resource payee. Settlement is served only when this is the AgentPay treasury 0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 (Base) or 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG (Solana)."
},
"amount": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"maxAmountRequired": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"maxTimeoutSeconds": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payment_requirements": {
"anyOf": [
{
"type": "object",
"properties": {
"asset": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"extra": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payTo": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Resource payee. Settlement is served only when this is the AgentPay treasury 0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 (Base) or 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG (Solana)."
},
"amount": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"maxAmountRequired": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"maxTimeoutSeconds": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
}
},
"description": "Exact envelope accepted by POST /facilitator/verify and /facilitator/settle.\n\nThe live Flask unpacker is liberal (v1/v2 names). This schema documents the\nsupported request body and still forwards extra x402 fields the upstream\nalready understands via nested objects.",
"additionalProperties": false
}
},
"additionalProperties": false
}Forward an x402 payment envelope to POST https://x402-agent-pay.com/facilitator/verify. Recovers the EIP-712 signer, checks payee/amount/expiry/nonce/USDC balance and spend authority. Free. No gas. No broadcast. Returns isValid plus invalidReason when the payload cannot clear. Authorization still lives in the existing facilitator implementation; this tool only forwards the JSON body.
| Argument | Type | Description |
|---|---|---|
| body* | object | Exact envelope accepted by POST /facilitator/verify and /facilitator/settle. The live Flask unpacker is liberal (v1/v2 names). This schema documents the supported request body and still forwards extra x402 fields the upstream already understands via nested objects. |
{
"type": "object",
"required": [
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"x402Version": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
},
"paymentPayload": {
"anyOf": [
{
"type": "object",
"properties": {
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"payload": {
"anyOf": [
{
"type": "object",
"properties": {
"signature": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "EIP-712 signature over the authorization, or SVM payload signature."
},
"authorization": {
"anyOf": [
{
"type": "object",
"properties": {
"to": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payee address. Settlement requires the AgentPay treasury."
},
"from": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payer address recovered from the EIP-712 signature."
},
"nonce": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"value": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "USDC atomic units (6 decimals) authorized by the signature."
},
"validAfter": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
},
"validBefore": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"accepted": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"x402Version": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payment_payload": {
"anyOf": [
{
"type": "object",
"properties": {
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"payload": {
"anyOf": [
{
"type": "object",
"properties": {
"signature": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "EIP-712 signature over the authorization, or SVM payload signature."
},
"authorization": {
"anyOf": [
{
"type": "object",
"properties": {
"to": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payee address. Settlement requires the AgentPay treasury."
},
"from": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Payer address recovered from the EIP-712 signature."
},
"nonce": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"value": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "USDC atomic units (6 decimals) authorized by the signature."
},
"validAfter": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
},
"validBefore": {
"anyOf": [
{
"type": "string"
},
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"accepted": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"x402Version": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"paymentRequirements": {
"anyOf": [
{
"type": "object",
"properties": {
"asset": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"extra": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payTo": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Resource payee. Settlement is served only when this is the AgentPay treasury 0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 (Base) or 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG (Solana)."
},
"amount": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"maxAmountRequired": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"maxTimeoutSeconds": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payment_requirements": {
"anyOf": [
{
"type": "object",
"properties": {
"asset": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"extra": {
"anyOf": [
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"payTo": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "Resource payee. Settlement is served only when this is the AgentPay treasury 0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03 (Base) or 6aCEuwH3PYx99cEmRz45otfxk39uF7ewGhqmvxfXisSG (Solana)."
},
"amount": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"scheme": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"network": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"resource": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
},
"maxAmountRequired": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"default": null
},
"maxTimeoutSeconds": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"default": null
}
},
"additionalProperties": false
},
{
"type": "object",
"additionalProperties": true
},
{
"type": "null"
}
],
"default": null
}
},
"description": "Exact envelope accepted by POST /facilitator/verify and /facilitator/settle.\n\nThe live Flask unpacker is liberal (v1/v2 names). This schema documents the\nsupported request body and still forwards extra x402 fields the upstream\nalready understands via nested objects.",
"additionalProperties": false
}
},
"additionalProperties": false
}