← The evidence ledger
Evidence row 63925
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agentshelf.syntexa.ch/v1/base-nft-metadata
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a63ab805ea5b71719e745915c88cde7df677760b2038b5a24a10659f223419b6
- Leaf
- 0x5a9a64b4a4fbd2a4f8a141b97bde906bbb4e34ca366dde2309389cc8202418b5
What was observed
{
"endpoints": [
[
"x402",
"https://agentshelf.syntexa.ch/v1/base-nft-metadata"
]
],
"name": "agentshelf.syntexa.ch/v1/base-nft-metadata",
"owner_address": "0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38",
"raw": {
"accepts": [
{
"amount": "5000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x1D61FAA032d3f40D9C470D2bf3A3f53De0E55a38",
"scheme": "exact"
}
],
"description": "Call when an agent needs parsed ERC-721 metadata for a Base contract and token id. tokenURI is fetched only from fixed IPFS and Arweave gateways. The image field is rewritten to that gateway. A missing token or non-JSON document errors. No arbitrary URL. Send JSON {\"contract\":\"0x1111111111111111111111111111111111111111\",\"token_id\":\"1\"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-nft-metadata first.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"contract": "0x1111111111111111111111111111111111111111",
"token_id": "1"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"billed": true,
"contract": "0x1111111111111111111111111111111111111111",
"image": "https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"metadata": {
"image": "https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"name": "Example"
},
"network": "eip155:8453",
"ok": true,
"receipt_id": "rcpt_01EXAMPLE000000000000000",
"source": "ipfs",
"token_id": "1",
"token_uri": "https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"warnings": []
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"examples": [
{
"contract": "0x1111111111111111111111111111111111111111",
"token_id": "1"
}
],
"properties": {
"contract": {
"description": "ERC-721 contract on Base. Example: 0x1111111111111111111111111111111111111111. tokenURI is read-only.",
"examples": [
"0x1111111111111111111111111111111111111111"
],
"type": "string"
},
"token_id": {
"description": "ERC-721 token id as a decimal integer. Example: 1. A JSON number is accepted when it is a safe integer. A missing token errors.",
"examples": [
"1"
],
"pattern": "^(0|[1-9]\\d*)$",
"type": "string"
}
},
"required": [
"contract",
"token_id"
],
"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": {
"additionalProperties": false,
"examples": [
{
"billed": true,
"contract": "0x1111111111111111111111111111111111111111",
"image": "https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"metadata": {
"image": "https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"name": "Example"
},
"network": "eip155:8453",
"ok": true,
"receipt_id": "rcpt_01EXAMPLE000000000000000",
"source": "ipfs",
"token_id": "1",
"token_uri": "https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"warnings": []
}
],
"properties": {
"billed": {
"examples": [
true
],
"type": "boolean"
},
"contract": {
"examples": [
"0x1111111111111111111111111111111111111111"
],
"type": "string"
},
"image": {
"examples": [
"https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG"
],
"type": [
"string",
"null"
]
},
"metadata": {
"additionalProperties": {},
"examples": [
{
"image": "https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"name": "Example"
}
],
"type": "object"
},
"network": {
"const": "eip155:8453",
"examples": [
"eip155:8453"
],
"type": "string"
},
"ok": {
"const": true,
"examples": [
true
],
"type": "boolean"
},
"receipt_id": {
"examples": [
"rcpt_01EXAMPLE000000000000000"
],
"type": "string"
},
"source": {
"enum": [
"ipfs",
"arweave",
"data"
],
"examples": [
"ipfs"
],
"type": "string"
},
"token_id": {
"examples": [
"1"
],
"type": "string"
},
"token_uri": {
"examples": [
"https://ipfs.io/ipfs/QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG"
],
"type": [
"string",
"null"
]
},
"warnings": {
"default": [],
"examples": [
[]
],
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"ok",
"receipt_id",
"billed",
"network",
"contract",
"token_id",
"source",
"token_uri",
"image",
"metadata"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-19T07:32:02.567Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-19T07:32:02.372Z"
},
"resource": "https://agentshelf.syntexa.ch/v1/base-nft-metadata",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Call when an agent needs parsed ERC-721 metadata for a Base contract and token id. tokenURI is fetched only from fixed IPFS and Arweave gateways. The image field is rewritten to that gateway. A missing token or non-JSON document errors. No arbitrary URL. Send JSON {\"contract\":\"0x1111111111111111111111111111111111111111\",\"token_id\":\"1\"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-nft-metadata first."
}What the leaf hashes
{"body":"a63ab805ea5b71719e745915c88cde7df677760b2038b5a24a10659f223419b6","id":63925,"kind":"listing","method":"baseline/1","observed_us":1793025455811849,"prev":null,"subject":"x402_bazaar:https://agentshelf.syntexa.ch/v1/base-nft-metadata","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x5a9a2d3815600221ec8a1e06aba5197a4e618300200355bc3a498daf7125a743
- 0x650c0da235bfc235e622bd2e8889b14c0beb9822d34a0856f89df56b2eefccec
- 0x6766d8dc19924b33a9678c3880067ea466daa25c3f47670ba59924b7f803b6e2
- 0x10900d74cc98a5390c9a28cd8fdf30e20814b785f9b3371bcf5848bce49631a0
- 0x7450382825975ed9f80f1459296dfd2f39d351ce295c015f3a46e0818c91ecea
- 0xef78c1c3f6a165c059321bb29daca5e2886b27cff27d8088b0fc9b473e54ba62
- 0x23ac45fa7afb26268a184a5cf34953219a39036c07e514dd4a16d62024403b48
- 0xafce156574b7d3f6e34ad5f15b294a0203597b29e89a7638d11dcb355bcba992
- 0xb15202d1c1778091104ee26b81c0e098e095455eb9e6476bd094067a45d11d26
- 0x1622116357fa2542142143deeb8538ad6f5b0f254675b718611465e74e2937f1
- 0x31cff173ca81a1fa9b4d9989ccba135fa83af9284e85748cedd858f7cc6cb7c0
- 0xc4c7772b121e7eab8b40f10646f850453150d76d672e4926bf2534db20273157
- 0xc8abb13c711b67d9f1ef145286ed450a0f5566f054a4b290ea3d711873bcbe20
- 0x5cdeb4648502e0633d01cc4f3379d48cccb9d4f528565b2868eb93db0df9e829
- 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
- 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
- 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae