← The evidence ledger
Evidence row 67363
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.mekler.ai/v1/research/news/find-topic-news
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 0f7160b35496716263bf1f1bb3ba6919a9dbebabbe6d65165835eff725963840
- Leaf
- 0x919d0eebb85c52644cc16b8462722dc52bbeb181a015bcd431dd8fa8cee2a1ea
What was observed
{
"endpoints": [
[
"x402",
"https://api.mekler.ai/v1/research/news/find-topic-news"
]
],
"name": "Mekler AI",
"owner_address": "0xf6c6e2e530bb311c14a49c1a07c720fc232c07c5",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb",
"meklerQuote": "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.b22db56736b798642de9991a644c4591d84d2d254e579be868c040ecd10708fc",
"memo": "m:si21Zza3mGQt6ZkaZExFkQ"
},
"maxTimeoutSeconds": 60,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "9mMDrHabSf73MPn1ANdANSmsNw2wKiqE7JZ7eD6EUSRc",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"meklerQuote": "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.2e1a1fe9c2eab6290efce0e963065ab146f0dd1cd60be98105a1af86e6647797",
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0xF6c6E2e530bb311c14a49C1a07C720fc232c07c5",
"scheme": "exact"
}
],
"description": "Find recent topic news or poll for new-to-agent links using a bounded follow-up checkpoint and seen history. Return normalized links, exact-link/headline deduplication and optional source-linked headline highlights from a7-day GDELT headline index. Monitoring dates are not verified publication dates.0.01 USDC per completed search, including no new links; source failures are uncharged.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"include_summary": true,
"limit": 1,
"query": "renewable energy"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"articles": [
{
"duplicate_count": 1,
"headline_id": "headline-9d12a0a05f5e0338",
"id": "article-10e46334083ac0e3",
"language": "English",
"observed_at": "2026-10-11T12:00:00Z",
"published_at": null,
"source_country": "",
"source_domain": "news.example.org",
"title": "Renewable energy storage pilot opens",
"url": "https://news.example.org/energy"
}
],
"attribution": {
"name": "The GDELT Project",
"url": "https://www.gdeltproject.org/"
},
"coverage": {
"discarded_rows": 0,
"duplicates_removed": 1,
"possibly_truncated": false,
"previously_seen_removed": 0,
"result_byte_limited": false,
"returned": 1,
"source": "GDELT headline index",
"source_limit": 150,
"source_rows": 3
},
"limitations": [
"Dates are GDELT monitoring times, not verified publication or first-ever observation times."
],
"monitoring": {
"history_limited": false,
"next_request": null,
"overlap_seconds": 2700,
"state": "initial"
},
"query": "renewable energy",
"retrieved_at": "2026-10-12T12:00:00Z",
"status": "ok",
"summary": {
"basis": "headlines_only",
"highlights": [
{
"article_ids": [
"article-10e46334083ac0e3"
],
"text": "Renewable energy storage pilot opens"
}
]
},
"window": {
"date_basis": "gdelt_observed_at",
"end": "2026-10-12T12:00:00Z",
"start": "2026-10-05T12:00:00Z"
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"oneOf": [
{
"not": {
"required": [
"days"
]
},
"required": [
"start_date",
"end_date"
]
},
{
"not": {
"anyOf": [
{
"required": [
"start_date"
]
},
{
"required": [
"end_date"
]
}
]
}
}
],
"properties": {
"days": {
"default": 7,
"maximum": 7,
"minimum": 1,
"type": "integer"
},
"end_date": {
"format": "date",
"maxLength": 10,
"type": "string"
},
"include_summary": {
"default": false,
"type": "boolean"
},
"language": {
"default": "english",
"enum": [
"english",
"any"
],
"maxLength": 7,
"type": "string"
},
"limit": {
"default": 10,
"maximum": 30,
"minimum": 1,
"type": "integer"
},
"match": {
"default": "all",
"enum": [
"all",
"any",
"phrase"
],
"maxLength": 6,
"type": "string"
},
"query": {
"maxLength": 160,
"minLength": 3,
"pattern": "^[\\w\\s.,'’\\-]+$",
"type": "string"
},
"seen": {
"items": {
"additionalProperties": false,
"properties": {
"headline_id": {
"pattern": "^headline-[0-9a-f]{16}$",
"type": "string"
},
"id": {
"pattern": "^article-[0-9a-f]{16}$",
"type": "string"
}
},
"required": [
"id",
"headline_id"
],
"type": "object"
},
"maxItems": 32,
"type": "array",
"uniqueItems": true
},
"since": {
"format": "date-time",
"pattern": "^\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}Z$",
"type": "string"
},
"sort": {
"default": "newest",
"enum": [
"newest",
"relevance"
],
"maxLength": 9,
"type": "string"
},
"start_date": {
"format": "date",
"maxLength": 10,
"type": "string"
}
},
"required": [
"query"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"articles": {
"items": {
"required": [
"id",
"headline_id",
"title",
"url",
"observed_at",
"published_at"
],
"type": "object"
},
"maxItems": 30,
"type": "array"
},
"attribution": {
"required": [
"name",
"url"
],
"type": "object"
},
"coverage": {
"type": "object"
},
"limitations": {
"items": {
"maxLength": 200,
"type": "string"
},
"maxItems": 5,
"type": "array"
},
"monitoring": {
"required": [
"state",
"next_request"
],
"type": "object"
},
"query": {
"maxLength": 160,
"type": "string"
},
"retrieved_at": {
"format": "date-time",
"maxLength": 20,
"type": "string"
},
"status": {
"enum": [
"ok"
],
"maxLength": 2,
"type": "string"
},
"summary": {
"type": [
"object",
"null"
]
},
"window": {
"required": [
"start",
"end",
"date_basis"
],
"type": "object"
}
},
"required": [
"status",
"query",
"retrieved_at",
"window",
"articles",
"summary",
"coverage",
"attribution",
"limitations",
"monitoring"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-12T21:45:09.472Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-12T21:45:09.298Z"
},
"resource": "https://api.mekler.ai/v1/research/news/find-topic-news",
"serviceName": "Mekler AI",
"tags": [
"news",
"news-search",
"research",
"source-links",
"deduplication"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Find recent topic news or poll for new-to-agent links using a bounded follow-up checkpoint and seen history. Return normalized links, exact-link/headline deduplication and optional source-linked headline highlights from a7-day GDELT headline index. Monitoring dates are not verified publication dates.0.01 USDC per completed search, including no new links; source failures are uncharged."
}What the leaf hashes
{"body":"0f7160b35496716263bf1f1bb3ba6919a9dbebabbe6d65165835eff725963840","id":67363,"kind":"listing","method":"baseline/1","observed_us":1793025462650306,"prev":null,"subject":"x402_bazaar:https://api.mekler.ai/v1/research/news/find-topic-news","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).
- 0x919cd5fd65677a1ed2c91283e68c7d8a7a8639a69a810c5db77b215eb1a393d0
- 0x33ce8a1577f2f8d6bcb2378819b68d5a95c70e6f45eefa059fd112a3c3fb1238
- 0x04c129a89c01ec838f19cc1c007b937411b658ef63ca9913177b21758221c79b
- 0x673ca09947ca1551fc0bef50fd4561f8da9dd2ecfbced80f7cc31a9e8d9d059b
- 0x000ac6f5e3b3b5a9ad26bf8447ac93a0d0c5c904b928080227ba39dd5b9d5be0
- 0x8a80e8071d89c1d7482b3e5270990ff15c8be03a3eee2bae88728bc634b8175e
- 0xe8990101081ac4ab22406d75e14c232297eed6e74d669214434b91d3eb5c304d
- 0x0800e1924523873ab042f526fc12d4d272495805528aac0b0151476ffde225b5
- 0x142bd0821391f4f4570870a90283a4e65e3ee17f262409a9a12cf46d2a9f33bd
- 0x8f6f90384a3dbb0aa1512320438fce6c69c255af4b720c9519d9dab665dd6626
- 0x6c9f1a764b7efa4ca549bf1cbbf8b397ce3c92cc35a0932f2dbf0706ae892c07
- 0xe131b224ee3c295dfa790b458d9daa11e2a32e6131c280c6be7d92190c756a88
- 0x45c1d3062bbe98a6b1540c7e2ccf6516eedd6ef07fdfeb1ba77ee6272970447c
- 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
- 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
- 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae