Evidence row 527957

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Returns the score, stored probe history, price and usage for an exact endpoint URL in Hagglyai's catalogue. Does not call the supplied URL. Hagglyai API documentation: https://hagglyai.com/openapi.json",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "url": {
            "description": "The endpoint URL, exactly as listed",
            "format": "uri",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "check_endpoint"
    },
    {
      "description": "Full ranked comparison of paid endpoints in one category. Call list_categories for valid ids.",
      "inputSchema": {
        "$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"
              ],
              "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": "Given a plain-language task (e.g. 'web search', 'scrape a page to markdown', 'BTC price'), returns the recommended paid API endpoint and ranked alternatives with price per call, reliability score and real usage. Use before paying for an unfamiliar x402 API.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "hide_flags": {
            "description": "Warnings to leave out, e.g. [\"wallet-mismatch\", \"few-repeat-buyers\"]",
            "items": {
              "enum": [
                "wallet-mismatch",
                "price-mismatch",
                "few-repeat-buyers",
                "unusual-seller-traffic",
                "test-listing"
              ],
              "type": "string"
            },
            "type": "array"
          },
          "max_price_usd": {
            "description": "Budget per call in USD",
            "exclusiveMinimum": 0,
            "type": "number"
          },
          "recent": {
            "description": "true = only endpoints checked in the last 7 days",
            "type": "boolean"
          },
          "task": {
            "description": "What the agent needs to do",
            "maxLength": 300,
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "task"
        ],
        "type": "object"
      },
      "name": "find_best"
    },
    {
      "description": "Categories Hagglyai compares, with endpoint counts, the cheapest price per call, and each category's sub-categories (platform and task ids for compare_category).",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "The 3 paid endpoints in one category with the most paying wallets in the last 30 days: \"Most popular\" first, then \"Popular\", the same as the site's stickers. Endpoints with warnings are held back and named. Call list_categories for valid ids.",
      "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"
              ],
              "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":"8fac5062b52ce6f468fe8bd19851009dba9be2862b8e1ab9e2bdb475787bb962","id":527957,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793124891867928,"prev":null,"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 2026-10-27 (273461 rows).

1. 0x94718e4b71464e817272ecc9586b8ab0bd8f019d050f787601e5a34d1edeb321
2. 0x6b711d630220bbd15fae6bdbfa419be7e8f9d71314f1394a3c755fc8cd2ca096
3. 0x3b3f4ccb49f258f39dc120c23bca9ded0599b282c0b7793e9f95967ba2dc6130
4. 0x29307a009d97711130df0949921317ec7bcb5703c13a8a41fa3c0d9df8dabd4a
5. 0xee4dbaafa8570a12544cf81a49d43888ef492a6e124d54f63c1113f5afbb61ed
6. 0x36fdcdc33bed79fcbd0090f727865c3aa4b9a82de6202c0306f00186292e670a
7. 0x1a91c212454353233ad75cf194bd49b24f6170ac3d2f08c5a53c7502d9e46e26
8. 0x3a443f53f0f7eba38064d1c2c83beaee0cb5d39b71f0a9394ea81f292c61ea06
9. 0xb87980de1ef0f83f74434126e0b7fb7bf052783371edfba3d04971763aab8fbe
10. 0x2cd6df1b424ca01feabc6fe190b5be1ed5d1b01fcb3f327ec0d4a204f14ab73e
11. 0x62768d685fdf68a23a3746fae9fbbdd9613e343468823ae92676080679a3f19f
12. 0x21b50531db6db8c65523fd5559cda8006afb66474d66107f3c29e6cd41ec3fbe
13. 0x59c5c792b40d9054ce2b84a60af97fa54f2e1a2a369a6a52dc3f45de41128e97
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4