← The evidence ledger
Evidence row 121100
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://seenly-payload-check.vercel.app/api/check
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- b1f1d4a9f69009c9bd421a29a525b42567ff6cb252ad9ca03176ba647accc5c6
- Leaf
- 0x2105c77c27f77aad4ab9e81ef7897a01cbdcb1c2384126536c7c7ec50d1b9bab
What was observed
{
"endpoints": [
[
"x402",
"https://seenly-payload-check.vercel.app/api/check"
]
],
"name": "Payload Check",
"owner_address": "0xee6239f3e17bebe5e89f21f29d74d68caa0d78ce",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xeE6239F3E17bEBe5e89F21F29D74D68CAa0d78CE",
"scheme": "exact"
}
],
"description": "Payload Check: data-quality filter for agents. Send any payload (tool/API output, scraped page, LLM answer, generated code, JSON, CSV) and get a 0-100 quality score, pass/warn/fail, tags and concrete issues: invalid or truncated JSON (with auto-repair), JSON Schema mismatches, syntax errors, bot-challenge/captcha/404 scrapes, LLM refusals, placeholders, repetition loops, mojibake. Deterministic, no LLM, payload not stored.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"content": "```json\n{\"name\": \"Acme Widget\", \"price\": 12.5, \"tags\": [\"tools\", \"home\",], \"sku\": \"N/A\"}\n```",
"expect": "auto"
},
"bodyType": "json",
"method": "GET",
"type": "http"
},
"output": {
"example": {
"action": "Use repaired.content (auto-fixed JSON) or retry the source.",
"check_version": "dq-0.1.0",
"detected_type": "json",
"issues": [
{
"code": "json_invalid",
"message": "Not valid JSON: Unexpected token '`', \"```json\n{\"\"... is not valid JSON",
"severity": "critical"
},
{
"code": "placeholder_values",
"message": "Placeholder-looking values (N/A, TODO, lorem ipsum, \"string\"...) at: sku",
"severity": "minor"
}
],
"quality_score": 32,
"repaired": {
"content": "{\"name\": \"Acme Widget\", \"price\": 12.5, \"tags\": [\"tools\", \"home\"], \"sku\": \"N/A\"}",
"note": "Mechanical repair only; check the steps (a closed truncation means data is missing).",
"steps": [
"removed markdown code fence",
"removed trailing commas"
]
},
"tags": [
"invalid_json",
"repairable",
"placeholder"
],
"usable": false,
"verdict": "fail"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"content": {
"description": "The payload to check (max 256 KB): JSON (even broken), code, scraped text or HTML, CSV, an LLM answer. Objects/arrays are accepted and checked as JSON.",
"type": "string"
},
"expect": {
"default": "auto",
"description": "What the payload should be. auto detects it.",
"enum": [
"auto",
"json",
"code",
"text",
"html",
"csv"
],
"type": "string"
},
"language": {
"description": "Optional code language (javascript, typescript, jsx, tsx get a real parser; python, go, rust, sql, shell get structural checks).",
"type": "string"
},
"min_chars": {
"description": "Optional minimum length for text payloads.",
"minimum": 0,
"type": "integer"
},
"min_score": {
"default": 80,
"description": "Score at or above which the verdict is pass (fail is always < 45 or any critical issue).",
"maximum": 100,
"minimum": 0,
"type": "number"
},
"repair": {
"default": true,
"description": "Try a conservative mechanical repair of broken JSON and return it.",
"type": "boolean"
},
"requestKey": {
"description": "Optional idempotency key, echoed back.",
"maxLength": 128,
"type": "string"
},
"schema": {
"description": "Optional JSON Schema (draft-07/2019) the JSON payload must match.",
"type": "object"
}
},
"required": [
"content"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"action": {
"type": "string"
},
"detected_type": {
"enum": [
"json",
"code",
"text",
"html",
"csv"
],
"type": "string"
},
"issues": {
"items": {
"properties": {
"code": {
"type": "string"
},
"location": {
"type": "string"
},
"message": {
"type": "string"
},
"severity": {
"enum": [
"critical",
"major",
"minor",
"info"
],
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"quality_score": {
"description": "100 = clean. Critical issue -60, major -25, minor -8.",
"maximum": 100,
"minimum": 0,
"type": "integer"
},
"repaired": {
"description": "Only for broken-but-fixable JSON: content (fixed JSON string), steps[].",
"type": "object"
},
"stats": {
"type": "object"
},
"tags": {
"description": "e.g. invalid_json, truncated, schema_mismatch, scrape_failure, bot_challenge, llm_refusal, placeholder, repetitive, syntax_error, empty, clean",
"items": {
"type": "string"
},
"type": "array"
},
"usable": {
"type": "boolean"
},
"verdict": {
"enum": [
"pass",
"warn",
"fail"
],
"type": "string"
}
},
"required": [
"quality_score",
"verdict",
"usable",
"tags",
"issues"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-09T14:54:36.984Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-09T14:54:36.838Z"
},
"resource": "https://seenly-payload-check.vercel.app/api/check",
"serviceName": "Payload Check",
"tags": [
"data-quality",
"validation",
"json-repair",
"scrape-check",
"guardrails"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Payload Check: data-quality filter for agents. Send any payload (tool/API output, scraped page, LLM answer, generated code, JSON, CSV) and get a 0-100 quality score, pass/warn/fail, tags and concrete issues: invalid or truncated JSON (with auto-repair), JSON Schema mismatches, syntax errors, bot-challenge/captcha/404 scrapes, LLM refusals, placeholders, repetition loops, mojibake. Deterministic, no LLM, payload not stored."
}What the leaf hashes
{"body":"b1f1d4a9f69009c9bd421a29a525b42567ff6cb252ad9ca03176ba647accc5c6","id":121100,"kind":"listing","method":"baseline/1","observed_us":1793025619312849,"prev":null,"subject":"x402_bazaar:https://seenly-payload-check.vercel.app/api/check","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).
- 0x2105e0b338ae8f17e2762c7ade7a74a437456e665da879c68a9aef277f2d19ba
- 0xc2b06393cc77954ffecee4afda4ed807938161115a139f11d691384e5a0ca77b
- 0x2f32ca0940383410088f46af0c94e5f25eefe159be97c469bf62fa3a442d55ad
- 0x4f08a8c146d7bfa4e6b4ec63a48667982e42b96070219d0b059e8b6978ea8dd4
- 0xefb836a1828623f877fada8f8138f4bad13d317883342ddfd12d7d72659e4cf9
- 0xd80a44a630d3ec6f4f64a0bb5034d95f6338c946ce85bf50c749d8673df40cc8
- 0xd67eadcb91527b5418f0eeaa4977cd2d3b5d0d0198fc1224906c61eba75fad6e
- 0x29e9eef9aea7129cdfe24183b1cce4c803503f07ab183501de9ff25bdbb86d4a
- 0x8ef6530824615af36b1bd7b35686e238ae98f9a507ea890d03e6d6b3df18d33c
- 0x6487a391c112421d6d0b92e0372d1e4a5fd6afe541f565a9dde5c636d1ae4643
- 0x71f472bb5c514dca2395c7842916e5cae63a9c622d8bc8f84b07a986c5ba91a1
- 0xfde157310fc8513767b162378ca9ceefb2937c374b7381a8887f7ccba8ab5a80
- 0x9d75d4d3ab6219edefa04be60b32fdd56be7a7672f370a5115f02f7b098ecd27
- 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
- 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
- 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae