Evidence row 291800

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Find the cheapest supplements by normalized price-per-unit within a category (and all its subcategories). This is the primary tool for \"what is the cheapest X?\" questions. Use list_categories first to pick a valid category_slug.",
      "inputSchema": {
        "properties": {
          "category_slug": {
            "description": "The category to search within, e.g. \"whey-protein\" or \"creatine\". Products in every subcategory are included, so a parent slug like \"protein-powder\" works too. Get valid slugs from list_categories.",
            "type": "string"
          },
          "in_stock_only": {
            "default": false,
            "description": "When true, only return products currently in stock.",
            "type": "boolean"
          },
          "limit": {
            "default": 10,
            "description": "Maximum number of products to return (1-50).",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "market": {
            "description": "Optional country market to query: nl, be, fr, gb, pl, es, dk. Defaults to nl, the market this endpoint answers for. Any other value is rejected.",
            "type": "string"
          }
        },
        "required": [
          "category_slug"
        ],
        "type": "object"
      },
      "name": "find_cheapest"
    },
    {
      "description": "Get full detail for one product by its id: price, normalized unit price, size, bulk/staffel tiers, buy link, and recent price history. Use the id returned by find_cheapest or search_products.",
      "inputSchema": {
        "properties": {
          "market": {
            "description": "Optional country market to query: nl, be, fr, gb, pl, es, dk. Defaults to nl, the market this endpoint answers for. Any other value is rejected.",
            "type": "string"
          },
          "product_id": {
            "description": "The numeric product id, as returned in the `id` field by find_cheapest or search_products.",
            "type": "integer"
          }
        },
        "required": [
          "product_id"
        ],
        "type": "object"
      },
      "name": "get_product"
    },
    {
      "description": "List the supplement categories that currently hold priced products, each with a live product count, store count, lowest normalized unit price, and its comparison basis (per_kg / per_serving / per_capsule). Use this to discover a valid category_slug for find_cheapest.",
      "inputSchema": {
        "properties": {
          "market": {
            "description": "Optional country market to query: nl, be, fr, gb, pl, es, dk. Defaults to nl, the market this endpoint answers for. Any other value is rejected.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "list_categories"
    },
    {
      "description": "Search the whole supplement catalog by product name or brand. Typo-tolerant (e.g. \"kreatine\", \"theanin\" still match). Results are ordered by relevance, then cheapest normalized price-per-unit. Use find_cheapest instead when you already know the category.",
      "inputSchema": {
        "properties": {
          "category_slug": {
            "description": "Optional: restrict results to this category and all of its subcategories, e.g. \"protein-powder\". Must be a slug from list_categories; an unknown slug is rejected.",
            "type": "string"
          },
          "in_stock_only": {
            "default": false,
            "description": "When true, only return products currently in stock.",
            "type": "boolean"
          },
          "limit": {
            "default": 20,
            "description": "Maximum number of products to return (1-50).",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "market": {
            "description": "Optional country market to query: nl, be, fr, gb, pl, es, dk. Defaults to nl, the market this endpoint answers for. Any other value is rejected.",
            "type": "string"
          },
          "max_unit_price_cents": {
            "description": "Optional: only return products whose normalized unit price, rounded to whole cents, is at or below this many cents.",
            "minimum": 0,
            "type": "integer"
          },
          "query": {
            "description": "The product name or brand to search for, e.g. \"whey isolaat\" or \"magnesium bisglycinaat\".",
            "minLength": 2,
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "search_products"
    }
  ]
}

What the leaf hashes

{"body":"2822d9b16318ea71eac453b2ceedade366fa0ab5cc43dbfc0d949a11833aad57","id":291800,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793048339012448,"prev":null,"subject":"2b0c9c64-b32d-47ac-ae75-2ea947a4a23c","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x942f6f8cc499294d1647b20bd9647508af52b3a366195f7a8affb717b2f7d9c2
2. 0x7d449dffe6b5c046a7de267aaa37cac2910cb58d60a42afe56a52c7c64df5f3f
3. 0xac161335a1e727dfef6a7d9206882658f84f533251481e64056017db7fda7585
4. 0x8caa9af6c1c559a00ee92d1e367f6c5847bbc439d0c52353ab54960c56070507
5. 0xc6e83160ec8fc078b929500c1d1b75205c297edc1e7de9a1217c1b372b1643ae
6. 0x2a0a6c9b12d0f8d785681a89a1533847d53118577ac65a0321c4d982837e8127
7. 0x12483ab831ac7860fa65b5af6787a5d7cf2ed64195264a714679617320541866
8. 0xace07922725a46801d78577b43633a7b3ef54efede2a50f41c2f4ca573b01c9d
9. 0x9340aeea5d599e0526a8a9603c498278d0309e78d3629f8079b93f780eec2e46
10. 0xac3b15fc68e650d74723c2a5743b930239735167e187d93b236aa87c8c2fc531
11. 0xcd52656344e352446858a7d55feb9336b07dd3ad98715c122aaf69d4eb3d6ca8
12. 0x3b55f6d5345bce3e1332e014f19526d25328fb6283d3518837a015c3621c0d1c
13. 0x45c1d3062bbe98a6b1540c7e2ccf6516eedd6ef07fdfeb1ba77ee6272970447c
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae