Evidence row 236572

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "Read-only audit of a package.json, requirements.txt, or .mcp.json configuration string against 258 live AI Agent SDKs and MCP servers. Flags breaking major version deltas, unpinned @latest MCP servers, and outdated dependencies with exact pin commands. Requires no authentication and returns a structured JSON report.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "manifest": {
            "description": "Raw contents of .mcp.json, package.json, requirements.txt, or a newline-separated list of packages",
            "type": "string"
          }
        },
        "required": [
          "manifest"
        ],
        "type": "object"
      },
      "name": "check_stack_drift"
    },
    {
      "description": "Read-only lookup returning the complete migration matrix for archived or frozen @modelcontextprotocol/server-* reference packages and their official 2026 vendor-maintained replacements. Takes no parameters and requires no authentication.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "get_archived_mcp_replacements"
    },
    {
      "description": "Read-only lookup of live npm or PyPI version, publish timestamp, 90-day release velocity, stability score (0-100), MCP tools/list schema drift risk, and before/after migration code for a single AI Agent SDK or MCP server. Prefer this over check_stack_drift when inspecting one specific package by name or slug.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "package": {
            "description": "Package name or slug (e.g. 'openai', '@modelcontextprotocol/sdk', '@playwright/mcp', 'fastmcp', 'mcp-clickhouse')",
            "type": "string"
          }
        },
        "required": [
          "package"
        ],
        "type": "object"
      },
      "name": "get_package_stability"
    },
    {
      "description": "Read-only query that lists the fastest-changing or highest schema-drift-risk AI Agent SDKs and MCP servers from the live AgentBreakWatch telemetry index, sorted descending by 90-day release velocity. Supports filtering by kind ('sdk', 'mcp', 'all'), category hub slug, and result limit (1-50).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "category": {
            "description": "Optional category hub slug (e.g. 'agent-sdks', 'aws-labs', 'database-backend', 'browser-automation', 'cloud-infra')",
            "type": "string"
          },
          "kind": {
            "description": "Filter by Agent SDK ('sdk'), MCP server ('mcp'), or 'all'",
            "enum": [
              "all",
              "sdk",
              "mcp"
            ],
            "type": "string"
          },
          "limit": {
            "description": "Maximum number of packages to return (default 15, max 50)",
            "type": "number"
          }
        },
        "type": "object"
      },
      "name": "list_volatile_packages"
    }
  ]
}

What the leaf hashes

{"body":"b6d6839ce3032b323ae2ce1f2e275d8bd6ccdfe16523f1cb2ff541200838c9a2","id":236572,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793028855011618,"prev":null,"subject":"d306e217-47ae-47ce-8395-00d034a0e986","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. 0x90cdc732b2b9900bd4efd8dd47a884d32481e960d12de915289ad7d20648b1a0
2. 0x24ce6f17777abd51a6f1ef12ad24af16a51e7dc401632ff8e908d18bcc45609d
3. 0x48861563140d700aa09578b7334358f1b0825c09e33b490060a79b0e0d027840
4. 0x251cb190fe3ecc8b4b032e14a36f40fd035534a0077fa826eeda79c456080c32
5. 0xb8092d96761306a2b796338df2bb3d13a1265dd166581a001535c8c565337e5d
6. 0x23ac4bcdd307ad3828c6800fb039e054a1f68debe3c9db9f1d0a87dc9449c4f2
7. 0x5466672d9d077db6ce74af409e66f0092d42eea5cc8e1cd5c0c79828204ab7e7
8. 0x15f48c3dcfc8fc95d0a12ca37e575b3ca8bd7ea44b76e41d4d337b866dd03fe2
9. 0xd6cb299383c65630bd27f540514dc02fdf258e87279dfa074726ec00f5cb65df
10. 0x5d6495469a224b0c8739fabdb7652717dcf778029d8f8eb34051fdf9d5ed5ee5
11. 0x6c9f1a764b7efa4ca549bf1cbbf8b397ce3c92cc35a0932f2dbf0706ae892c07
12. 0xe131b224ee3c295dfa790b458d9daa11e2a32e6131c280c6be7d92190c756a88
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