Evidence row 804647

What was observed

{
  "count": 7,
  "tools": [
    {
      "description": "List applications inside a specific category, paginated. Use this when the user wants to explore an area rather than search for a specific tool.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 20,
            "description": "Page size.",
            "maximum": 100,
            "minimum": 1,
            "type": "integer"
          },
          "linkName": {
            "description": "The category linkName (e.g. 'image-generation').",
            "minLength": 1,
            "type": "string"
          },
          "offset": {
            "default": 0,
            "description": "Number of results to skip for pagination.",
            "minimum": 0,
            "type": "integer"
          }
        },
        "required": [
          "linkName"
        ],
        "type": "object"
      },
      "name": "browse_category"
    },
    {
      "description": "Compare two AI tools side-by-side. Returns structured attributes for both (pricing, deployment, modality, content policy) so the client can recommend which fits a user's needs.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "linkName_a": {
            "description": "The canonical linkName of the first application (slug used in /application/<linkName>).",
            "minLength": 1,
            "type": "string"
          },
          "linkName_b": {
            "description": "The canonical linkName of the second application.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "linkName_a",
          "linkName_b"
        ],
        "type": "object"
      },
      "name": "compare_tools"
    },
    {
      "description": "Given a specific AI tool, return similar tools (same category, excluding the original). Use for 'what's like X?' or 'cheaper alternative to Y' questions.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "limit": {
            "default": 10,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "linkName": {
            "description": "The linkName of the application to find alternatives for.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "linkName"
        ],
        "type": "object"
      },
      "name": "get_alternatives"
    },
    {
      "description": "Fetch the full detail page for a specific AI tool by its linkName. Returns name, full description, category, screenshot, and additional information if available.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "linkName": {
            "description": "The canonical linkName of the application (the slug used in /application/<linkName>).",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "linkName"
        ],
        "type": "object"
      },
      "name": "get_tool"
    },
    {
      "description": "Return curated editorial picks across the directory, or within a specific category if provided. Use for 'recommend the best AI tools' or 'top X in Y' questions.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Optional category linkName to scope the picks.",
            "type": "string"
          },
          "limit": {
            "default": 10,
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          }
        },
        "type": "object"
      },
      "name": "get_top_picks"
    },
    {
      "description": "List all categories in the directory. Useful when the user wants to browse by topic or narrow a search by category.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "Search the AI Collection directory for AI tools matching a query. Returns a ranked list with name, URL, and short description. Use this for 'find me a tool that does X' requests.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Optional category linkName to scope the search (e.g. 'image-generation').",
            "type": "string"
          },
          "limit": {
            "default": 10,
            "description": "Maximum number of results to return.",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "Free-text query to match against application names and descriptions.",
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_tools"
    }
  ]
}

What the leaf hashes

{"body":"cc78b8db5f7ab05fc8f7f4e46540e0511a5a829aadf12c9e56b460866547b4a6","id":804647,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793220916368774,"prev":null,"subject":"a998d297-f7a6-441c-ad90-781e2719eccd","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x6a8edebf41737801469b17e15a72cc87a4546288415396e230756b69401d047d
2. 0xe0520113fe5a2c353031f637f9097c5452f2585e533dd1058b7c8d00db2a4933
3. 0x89770a403c47c934e4b2f0589008d7fe00070865416b2bf2e7a0ae4c39c2a769
4. 0x3081a3cfa4656d61c8e05ee2128e6639facd9a2bb3231e0a7a416b5d3faeaf80
5. 0xdb577b4283ce1604ba517bba97a3cc7ca2a2e8356ea89bf4517e149bd144ddcc
6. 0x431db7fd455ea928246daa3a141ab3324422d5b497b700343ae6c749ec9ee641
7. 0x5b6545b2396a4a939fed92655413e2fe571769be5213bb714f4ffb17c7f6b484
8. 0x9bda5baa376ffd2e64e9f78d881a0edace7eea1ff6a478ca1dda15ea4986089e
9. 0x182caaef8a3449767aef5991af1453236b04091ac1361fdb549b5c0e456a9d05
10. 0xe60275ff1bb36848cb81e59f1333877fa544b7cbba0213d3b8516188c20b81c8
11. 0x6e8e98480e63895bfe3d418441f46dc774f9c1ed1d99a51ec845c8acd226bbd6
12. 0x8a0599f25a9b749be213dc9ece838abbd82696fbf961bcac48edf91f119cae6f
13. 0xc0e02389eb414c04a7dc9b6703be98601510da00046cf6f744adbfe5e43bf146
14. 0x9629b9515160844aacc33a6aff292bbb444ac65e0d773f2fa899885c3481fa54
15. 0xe6054de1f67b1e6f15bcf16d2b6536cf35dd9705fdf6ce59853e79784693ab5f
16. 0xa99a40fe210d675bb6ab72d4bb72ab40eb44ac345773c457fbe58e67a47b03df
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae