MCP Tool Audit

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "toolset": {
            "tools": [
              {
                "name": "search",
                "inputSchema": {
                  "type": "object",
                  "properties": {
                    "q": {}
                  }
                }
              },
              {
                "name": "purgeEverything",
                "description": "Remove all records.",
                "inputSchema": {
                  "type": "object",
                  "required": [
                    "confirm",
                    "scope"
                  ],
                  "properties": {
                    "confirm": {
                      "type": "boolean"
                    }
                  }
                }
              },
              {
                "name": "read_file",
                "annotations": {
                  "readOnlyHint": true,
                  "destructiveHint": true
                },
                "description": "Read a file from disk and return its contents as text.",
                "inputSchema": {
                  "type": "array"
                }
              }
            ]
          }
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "valid": false,
          "limits": {
            "maxCalls": 1000,
            "maxTools": 400,
            "maxServers": 20,
            "maxFindings": 500,
            "confusableOverlap": 0.6
          },
          "passed": false,
          "complete": true,
          "findings": [
            {
              "code": "ARGUMENT_TYPE_MISSING",
              "tool": "search",
              "detail": "search: argument q declares no type or enum, so an agent cannot tell what to send.",
              "argument": "q"
            },
            {
              "code": "ARGUMENT_UNDESCRIBED",
              "tool": "search",
              "detail": "search: argument q has no description, which is what an agent reads to fill it.",
              "argument": "q"
            },
            {
              "code": "TOOL_UNDESCRIBED",
              "tool": "search",
              "detail": "search has no description, which is the main thing an agent uses to choose it."
            }
          ],
          "request_id": "example-request",
          "service_id": "mcp_tool_schema_audit",
          "assumptions": [
            "An agent chooses and fills a tool from its name, description and argument schemas, so a missing description is a functional defect rather than a documentation preference.",
            "Mutation hints are reported as absent when a name or description reads as state-changing. That is a statement about the manifest, not a judgement that the tool is dangerous.",
            "A naming convention is only asserted when most tools follow one; otherwise outliers are not reported."
          ],
          "limitations": [
            "Structural and declarative audit of the manifest supplied. No tool is called and no server is contacted, so whether a tool behaves as described is not assessed.",
            "valid is true only when the whole toolset was read and nothing an agent needs was missing."
          ],
          "observed_at": "2026-10-02T00:00:00.000Z",
          "not_examined": [],
          "finding_count": 8,
          "naming_counts": {
            "other": 1,
            "dotted": 0,
            "camelCase": 1,
            "kebab-case": 0,
            "snake_case": 1
          },
          "read_tool_count": 3,
          "service_version": "1.0.0",
          "findings_by_code": {
            "TOOL_UNDESCRIBED": 1,
            "CONTRADICTORY_HINTS": 1,
            "ARGUMENT_UNDESCRIBED": 2,
            "ARGUMENT_TYPE_MISSING": 1,
            "MUTATION_HINTS_ABSENT": 1,
            "INPUT_SCHEMA_NOT_OBJECT": 1,
            "REQUIRED_ARGUMENT_NOT_DECLARED": 1
          },
          "naming_convention": null,
          "supplied_tool_count": 3,
          "tools_without_description": 1,
          "tools_without_output_schema": 3
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "toolset"
              ],
              "properties": {
                "toolset": {},
                "require_descriptions": {
                  "type": "boolean"
                },
                "require_output_schemas": {
                  "type": "boolean"
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog

2026-10-04 07:55Z

Last indexed by Roundhouse

2026-10-05 00:20Z

Last enriched (probe, favicon, geo)

2026-10-04 11:16Z

x402 version

2

Max timeout

60s

Liveness probe

HTTP 0