Evidence row 4153579

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Call this before paying a specific API URL you were given or found elsewhere, to see whether it can be trusted: Hagglyai's reliability score and recent check history, its price per call, how many paying users it has, and any warnings (for example a payment wallet that does not match the seller). It never calls the URL. Hagglyai API documentation: https://hagglyai.com/openapi.json",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "url": {
            "description": "The API's URL, exactly as you would call it",
            "format": "uri",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "check_endpoint"
    },
    {
      "description": "Call this to weigh the options in one area instead of taking find_best's single recommendation, or when the user asks \"which is the cheapest / most reliable X API?\". Returns every tracked API in the category ranked by score, with price per call, reliability, usage and any warnings. Category ids: web-search, web-extraction, llm-inference, crypto-prices, onchain-data, enrichment, weather, news, social-media, jobs, ecommerce, maps-places, translation, messaging, travel, stocks, pdf-generation, captcha-solving, sports-data, shopping, speech-audio. Narrow by platform or task ids from list_categories. Free, read-only and quick: it never calls or pays the APIs it describes.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "category": {
            "description": "Category id, e.g. 'web-search'",
            "type": "string"
          },
          "hide_flags": {
            "description": "Warnings to leave out, e.g. [\"wallet-mismatch\", \"few-repeat-buyers\"]",
            "items": {
              "enum": [
                "wallet-mismatch",
                "price-mismatch",
                "few-repeat-buyers",
                "unusual-seller-traffic",
                "test-listing",
                "resale"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "limit": {
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "max_price_usd": {
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "platform": {
            "description": "Sub-category platform ids, any of, e.g. [\"instagram\",\"tiktok\"]. See list_categories",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "rail": {
            "description": "Paid rails to include, e.g. [\"x402\"] for pay-per-call only (default both)",
            "items": {
              "enum": [
                "x402",
                "apify"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "recent": {
            "description": "true = only endpoints checked in the last 7 days",
            "type": "boolean"
          },
          "task": {
            "description": "Sub-category task ids, any of, e.g. [\"comments\"]. See list_categories",
            "items": {
              "type": "string"
            },
            "type": "array"
          }
        },
        "required": [
          "category"
        ],
        "type": "object"
      },
      "name": "compare_category"
    },
    {
      "description": "Call this when a task needs an outside API or data source and you have not picked one, e.g. \"search the web\", \"scrape this page to markdown\", \"get the BTC price\", \"Instagram comments for a post\", \"flight prices\", \"generate a PDF\", \"solve a captcha\", \"translate this text\". Returns the recommended pay-per-call API with its price per call, reliability score and real usage, plus ranked alternatives and a link to each. Covers Web search; Web page extraction; LLM inference; Crypto prices & market data; On-chain data; People & company enrichment; Weather; News; Social media data; Job listings; Products & prices; Maps & places; Translation; Email, SMS & messaging; Flights & travel; Stocks & forex; PDF generation; Captcha solving; Sports data; Shopping; Speech & audio. Free, read-only and quick: it never calls or pays the APIs it describes.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "hide_flags": {
            "description": "Warnings to leave out, e.g. [\"wallet-mismatch\", \"few-repeat-buyers\"]",
            "items": {
              "enum": [
                "wallet-mismatch",
                "price-mismatch",
                "few-repeat-buyers",
                "unusual-seller-traffic",
                "test-listing",
                "resale"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "max_price_usd": {
            "description": "Budget per call in USD, e.g. 0.01",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "recent": {
            "description": "true = only endpoints checked in the last 7 days",
            "type": "boolean"
          },
          "task": {
            "description": "The job in plain words, as the user would put it, e.g. \"scrape TikTok comments\" or \"weather forecast for a city\"",
            "maxLength": 300,
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "task"
        ],
        "type": "object"
      },
      "name": "find_best"
    },
    {
      "description": "Call this to see whether Hagglyai can help with a need, or to get ids for compare_category and most_popular: every category with how many APIs it tracks, the cheapest price per call, and its platform and task sub-categories (e.g. instagram, comments).",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "Call this when the user asks what other people use, or wants a safe, proven choice: the 3 APIs in a category with the most paying users in the last 30 days, \"Most popular\" first. APIs with warnings are held back and named. Category ids: web-search, web-extraction, llm-inference, crypto-prices, onchain-data, enrichment, weather, news, social-media, jobs, ecommerce, maps-places, translation, messaging, travel, stocks, pdf-generation, captcha-solving, sports-data, shopping, speech-audio. Free, read-only and quick: it never calls or pays the APIs it describes.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "category": {
            "description": "Category id, e.g. 'web-search'",
            "type": "string"
          },
          "hide_flags": {
            "description": "Warnings to leave out, e.g. [\"wallet-mismatch\", \"few-repeat-buyers\"]",
            "items": {
              "enum": [
                "wallet-mismatch",
                "price-mismatch",
                "few-repeat-buyers",
                "unusual-seller-traffic",
                "test-listing",
                "resale"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "max_price_usd": {
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "platform": {
            "description": "Sub-category platform ids, any of, e.g. [\"instagram\",\"tiktok\"]. See list_categories",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "rail": {
            "description": "Paid rails to include, e.g. [\"x402\"] for pay-per-call only (default both)",
            "items": {
              "enum": [
                "x402",
                "apify"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "recent": {
            "description": "true = only endpoints checked in the last 7 days",
            "type": "boolean"
          },
          "task": {
            "description": "Sub-category task ids, any of, e.g. [\"comments\"]. See list_categories",
            "items": {
              "type": "string"
            },
            "type": "array"
          }
        },
        "required": [
          "category"
        ],
        "type": "object"
      },
      "name": "most_popular"
    }
  ]
}

What the leaf hashes

{"body":"16d2282758335c01413f6826eda7c0c811b22dc65bad5e6dbc8a4d5a5a708510","id":4153579,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1794145688769209,"prev":3055568,"subject":"7aa247ae-4fd7-4d87-9c76-f2f7d292ddab","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-08 (183509 rows).

1. 0xe8315aa916d50b01cb1e9b7f66dcef12ee68541f14ca3698d28141c72fa4eee1
2. 0x75b8158746915aa50bb387f65b610c4222b60e4a2f6f9a32aad6e5d543eb6c59
3. 0x9fced90d1c886533bbb5969d69134dcc1fb4b486b441997c93ffee12f2b80dff
4. 0x8e77fd4dea20195e51cdcdd369b90ac07aeaa9694bcd5ee810251e5cd9f1c296
5. 0xa1003117f97c54e2ef7d986e17814decc5779512bc55fe0811a5c03f63062574
6. 0x2989094df4b9fa578033804df683dc726894153902c7daef8bbc4dfbdf73f15e
7. 0xffdf22df669e34a019fb955a8a5a77be8464bd69abe5c534ed355e11f9515382
8. 0xbfe47336dac82fd592df1bb1bc0dff49a0a2ba7ae02b86483959df1a16cbd0c1
9. 0xbce149aeb560460c2da2d9ed219ecd5e3e6f46cbc0b26ad2ec9627f13421ec1e
10. 0xd0825bc3b241063e50906a4bd781efce8bd5cca3248fbb60a3cd063ab069d0c4
11. 0x2464f9c9e6057246f4555524cd1a2ace1988bcbe170742a1cfe8a6a59b210d8d
12. 0xdc477e0823d29b7b46628e16d1837acd331661712b237d5d287a293efe640ca4
13. 0x740c7caad6a7144cd97e2f29e3d6e376f550e0092465cde9e08cdf68d6917331
14. 0x8d8d998be66c78454d8d04127be93a7f4e487f6b06dde47101d3aa5bd61252de
15. 0x41be111f1c6a20bdc67d886780b7a6b2f0ff5ab9d9f6e536681f4081b7c93338
16. 0xf9aac73ecfa1eb00a9ea18eb29993fb1634bd55ad625dfc8c59fd9afcef514f5
17. 0x2d9754fdf3b1fe7b0030b55b1fe7e859e5c53291df3d09cef34b31423a50dc18

Day root

0xbf84ec37f88c5f23d2144bd7dbc1ea0f8edc93b3764a885a7164b7923ff3460b

Chained

0x9fea188e4965f50de727e97c40e18d5ff2c2ddbfd4f1ae65e22ddd6f676bccfc

Published

On Arc Testnet, block 71451618: 0xb5273480942a54cd07f291b8319e59976f8d9d0583181c764eed04c9b3f7a022