Decode an EVM signature request (EIP-712 typed data, Permit/Permit2, or ERC-20 a
Decode an EVM signature request (EIP-712 typed data, Permit/Permit2, or ERC-20 approve calldata) into a structured intent: what token, which spender, how much, until when, plus risk_flags and an action_hint. Deterministic, no LLM. Answers an agent's question 'what am I about to sign?'
Answeringour last check, 2026-09-24
1 of 1checks answered this week
726 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://x402-store.dgdb.workers.dev/v1/sign-decode
| Category | Commerce and shopping |
|---|---|
| Provider host | x402-store.dgdb.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.005 | 726 ms |
Example input (from the provider)
{
"body": {
"domain": {
"chainId": 8453,
"name": "Permit2",
"verifyingContract": "0x000000000022D473030F116dDEE9F6B43aC78BA3"
},
"message": {
"details": {
"amount": "1461501637330902918203684832716283019655932542975",
"expiration": "1781176678",
"nonce": "0",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"sigDeadline": "1749722278",
"spender": "0x66a9893cC07D91D95644AEDD05D03f95e1dBA8Af"
},
"primaryType": "PermitSingle"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"description": "EIP-712 typed data to decode (domain/primaryType/message), or {\"calldata\": \"0x...\"} for raw ERC-20 approve calldata.",
"properties": {
"calldata": {
"type": "string"
},
"domain": {
"type": "object"
},
"message": {
"type": "object"
},
"primaryType": {
"type": "string"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}