← The evidence ledger
Evidence row 118726
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://presign-guard.fizzl.eu/v1/check/explain
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 5e6695a327bb2b6ba7cc5e14450fb51adf2b1dfcf995e2f557b1383708c0d829
- Leaf
- 0x590e966346748ad996d90e974901f98c622cd19e1ce68313cc60b3041f3cd6c7
What was observed
{
"endpoints": [
[
"x402",
"https://presign-guard.fizzl.eu/v1/check/explain"
]
],
"name": "presign-guard",
"owner_address": "0x6b0f4651ed42893ab58139938175e4a69f175f25",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x6B0F4651eD42893ab58139938175E4a69f175F25",
"scheme": "exact"
},
{
"amount": "0.03",
"asset": "524C555344000000000000000000000000000000",
"extra": {
"areFeesSponsored": false,
"invoiceId": "presign-guard.fizzl.eu POST /v1/check/explain",
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "r9xmBsRr8Ao7jRgjjxreMiAwGiCK2FGwqw",
"scheme": "exact"
},
{
"amount": "30000",
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"maxTimeoutSeconds": 300,
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=",
"payTo": "LOYVFSQ6ZTS2YWUW4GQ5L6VPP2TPIOXWYDACK53CPOHQQHLDMEMKJDXAX4",
"scheme": "exact"
}
],
"description": "Is this transaction, approval or signature safe to sign, explained for a person? The same pre-sign verdict as /v1/check (green/orange/red + reason codes) plus a short plain-language explanation in English or Dutch, for an agent to show its user before asking for approval. Bulk: 100 checks for $0.80 via /v1/credits.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"amount": "1000000",
"chainId": 8453,
"spender": "0x000000000022D473030F116dDEE9F6B43aC78BA3",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"type": "approval"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"reasons": [
{
"code": "UNLIMITED_APPROVAL",
"details": {
"token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
},
"severity": "orange",
"subject": "0x000000000022d473030f116ddee9f6b43ac78ba3"
}
],
"verdict": "orange"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"amount": {
"description": "approval: amount in base units (0 = revoke)",
"type": "string"
},
"chainId": {
"description": "EVM chain; required for approval, transaction and signature",
"enum": [
1,
10,
56,
137,
8453,
42161
],
"type": "integer"
},
"data": {
"description": "transaction: 0x-prefixed calldata",
"type": "string"
},
"lang": {
"description": "explain only: language of the explanation (default en)",
"enum": [
"en",
"nl"
],
"type": "string"
},
"mandate": {
"description": "optional, EIP-3009 payments only: the spending mandate the agent pays under (x402 authority extension, x402-mandate/1): { mandate, alg: \"Ed25519\", sig, paymentId }. Outside it (over perPayment or cap, other recipient, payer or token, expired, bad signature, nonce not the mandate binding) is red",
"type": "object"
},
"network": {
"description": "xrpl: the ledger (default xrpl:0, mainnet)",
"enum": [
"xrpl:0",
"xrpl:1"
],
"type": "string"
},
"origin": {
"description": "optional: the site asking for the signature or transaction (URL or hostname); a domain under 30 days old is orange",
"type": "string"
},
"spender": {
"description": "approval: who gets the allowance",
"type": "string"
},
"to": {
"description": "transaction: target contract",
"type": "string"
},
"token": {
"description": "approval: token contract",
"type": "string"
},
"tx": {
"description": "xrpl: the unsigned transaction JSON (TransactionType, Account, ...). Red: SetRegularKey/SignerListSet to another key, disabling the master key, AccountDelete, fake RLUSD; orange: partial payments, destinations that refuse or need a tag, issuers that can claw back or freeze, escrows and NFT giveaways",
"type": "object"
},
"type": {
"description": "What the agent is about to sign (xrpl: an XRP Ledger transaction)",
"enum": [
"approval",
"transaction",
"signature",
"xrpl"
],
"type": "string"
},
"typedData": {
"description": "signature: the eth_signTypedData_v4 payload (Permit, Permit2, EIP-3009 x402 payment, Seaport)",
"type": [
"object",
"string"
]
},
"value": {
"description": "transaction: native value in wei",
"type": "string"
}
},
"required": [
"type"
],
"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": {
"properties": {
"explanation": {
"properties": {
"lang": {
"type": "string"
},
"text": {
"type": "string"
}
},
"type": "object"
},
"reasons": {
"items": {
"properties": {
"code": {
"type": "string"
},
"details": {},
"severity": {
"enum": [
"red",
"orange",
"info"
],
"type": "string"
},
"subject": {
"type": "string"
}
},
"required": [
"code",
"severity"
],
"type": "object"
},
"type": "array"
},
"receipt": {
"description": "Signature over this whole answer (without receipt.signature), so the verdict can be verified later: EIP-191 personal_sign over canonical JSON (sorted keys, compact, ASCII-escaped). Signer addresses: /.well-known/presign-guard-signer.json; free check: POST /v1/verify.",
"properties": {
"algorithm": {
"enum": [
"eip191-canonical-json-v1"
],
"type": "string"
},
"cert": {
"description": "The payout wallet's certificate for this signing key: personal_sign by authority over 'fizzl receipt signer\\nservice: <service>\\nsigner: <signer>\\nvalid_from: <date>'. Pin the payout wallet and a rotated key still verifies.",
"properties": {
"authority": {
"type": "string"
},
"service": {
"type": "string"
},
"signature": {
"type": "string"
},
"signer": {
"type": "string"
},
"valid_from": {
"type": "string"
}
},
"type": "object"
},
"input_sha256": {
"description": "sha256 of canonical JSON {route, input}: your body (POST) or query parameters (GET)",
"type": "string"
},
"payment": {
"description": "The payment behind this answer, from your x402 payment payload. EVM: payer + EIP-3009 nonce; find the settlement as AuthorizationUsed(payer, nonce) on the asset contract. Solana: payer + sha256 of the signed transaction you sent.",
"properties": {
"amount": {
"type": "string"
},
"asset": {
"type": "string"
},
"network": {
"type": "string"
},
"nonce": {
"type": "string"
},
"pay_to": {
"type": "string"
},
"payer": {
"type": "string"
},
"proof": {
"enum": [
"eip3009",
"svm-transaction"
],
"type": "string"
},
"transaction_sha256": {
"type": "string"
}
},
"type": "object"
},
"request_id": {
"type": "string"
},
"route": {
"type": "string"
},
"signature": {
"type": "string"
},
"signed_at": {
"type": "string"
},
"signer": {
"type": "string"
}
},
"required": [
"request_id",
"route",
"input_sha256",
"signed_at",
"signer",
"algorithm",
"signature"
],
"type": "object"
},
"subject": {
"type": "object"
},
"verdict": {
"enum": [
"green",
"orange",
"red"
],
"type": "string"
}
},
"required": [
"verdict",
"reasons"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791125199/bazaar-icons/dae343325dc2ef3d.png",
"lastUpdated": "2026-10-08T06:26:13.09Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-08T06:26:12.555Z"
},
"resource": "https://presign-guard.fizzl.eu/v1/check/explain",
"serviceName": "presign-guard",
"tags": [
"wallet-security",
"pre-sign",
"approvals",
"sanctions",
"agents"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Is this transaction, approval or signature safe to sign, explained for a person? The same pre-sign verdict as /v1/check (green/orange/red + reason codes) plus a short plain-language explanation in English or Dutch, for an agent to show its user before asking for approval. Bulk: 100 checks for $0.80 via /v1/credits."
}What the leaf hashes
{"body":"5e6695a327bb2b6ba7cc5e14450fb51adf2b1dfcf995e2f557b1383708c0d829","id":118726,"kind":"listing","method":"baseline/1","observed_us":1793025613640246,"prev":null,"subject":"x402_bazaar:https://presign-guard.fizzl.eu/v1/check/explain","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.