MCP MeasureMCP Measure

index observed

machine-works-broker

Free evidence capability discovery, quotes and durable unmet requests. No payment or spend.

Should I use this

Quality & Safety

A
Description quality
93%
Schema completeness
72%
Naming quality
93%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~1,408Tokens (tool definitions)
~2.2 KBTypical response size
Moderate attention impact (1.10% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "machine-works-broker": {
      "url": "https://machine-works-broker.weathered-dew-46b4.workers.dev/mcp"
    }
  }
}

Remote endpoints

https://machine-works-broker.weathered-dew-46b4.workers.dev/mcpstreamable-http

What it can do

Tool inventory

Tools (6)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢preflight_capability(task, capability_id, inputs, freshness, output, ...)

Free input/price preflight before a paid endpoint invocation. No target fetch, demand or payment.

Input Schema

{
  "type": "object",
  "properties": {
    "task": {
      "type": "string",
      "minLength": 1,
      "maxLength": 500
    },
    "capability_id": {
      "type": "string",
      "maxLength": 100
    },
    "inputs": {
      "type": "object"
    },
    "freshness": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "max_age_seconds": {
          "type": "number",
          "minimum": 0
        }
      }
    },
    "output": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "format": {
          "type": "string",
          "maxLength": 40
        },
        "schema": {
          "type": "object"
        }
      }
    },
    "economics": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "max_price_usd": {
          "type": "number",
          "minimum": 0
        },
        "quantity": {
          "type": "integer",
          "minimum": 1,
          "maximum": 10000
        },
        "expected_frequency": {
          "type": "string",
          "maxLength": 100
        },
        "deadline_at": {
          "type": "string",
          "format": "date-time"
        },
        "recurring": {
          "type": "boolean"
        },
        "committed_max_budget_usd": {
          "type": "number",
          "minimum": 0
        },
        "reservation_intent": {
          "type": "boolean"
        },
        "bounty_intent": {
          "type": "boolean"
        }
      }
    },
    "urgency": {
      "type": "string",
      "maxLength": 100
    },
    "return_path": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "webhook_url": {
          "type": "string",
          "maxLength": 2000
        },
        "a2a_callback": {
          "type": "string",
          "maxLength": 2000
        }
      }
    },
    "client": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "requester_id": {
          "type": "string",
          "maxLength": 100
        },
        "wallet": {
          "type": "string",
          "maxLength": 100
        },
        "agent_id": {
          "type": "string",
          "maxLength": 100
        }
      }
    }
  },
  "required": [
    "task"
  ],
  "additionalProperties": false
}
🟢next_best_capability(capability_id, budget_usd, has_snapshot, recurring)

Optional deterministic next step after using a capability. Respects budget and current availability; never purchases. Copy its attribution header when invoking the recommended endpoint.

Input Schema

{
  "type": "object",
  "properties": {
    "capability_id": {
      "type": "string"
    },
    "budget_usd": {
      "type": "number",
      "minimum": 0
    },
    "has_snapshot": {
      "type": "boolean"
    },
    "recurring": {
      "type": "boolean"
    }
  },
  "required": [
    "capability_id"
  ],
  "additionalProperties": false
}
🟢find_capability(task, capability_id, inputs, freshness, output, ...)

Find and quote a registered capability using its capability_id or an exact supported intent. Read-only; no demand or payment created.

Input Schema

{
  "type": "object",
  "properties": {
    "task": {
      "type": "string",
      "minLength": 1,
      "maxLength": 500
    },
    "capability_id": {
      "type": "string",
      "maxLength": 100
    },
    "inputs": {
      "type": "object"
    },
    "freshness": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "max_age_seconds": {
          "type": "number",
          "minimum": 0
        }
      }
    },
    "output": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "format": {
          "type": "string",
          "maxLength": 40
        },
        "schema": {
          "type": "object"
        }
      }
    },
    "economics": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "max_price_usd": {
          "type": "number",
          "minimum": 0
        },
        "quantity": {
          "type": "integer",
          "minimum": 1,
          "maximum": 10000
        },
        "expected_frequency": {
          "type": "string",
          "maxLength": 100
        },
        "deadline_at": {
          "type": "string",
          "format": "date-time"
        },
        "recurring": {
          "type": "boolean"
        },
        "committed_max_budget_usd": {
          "type": "number",
          "minimum": 0
        },
        "reservation_intent": {
          "type": "boolean"
        },
        "bounty_intent": {
          "type": "boolean"
        }
      }
    },
    "urgency": {
      "type": "string",
      "maxLength": 100
    },
    "return_path": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "webhook_url": {
          "type": "string",
          "maxLength": 2000
        },
        "a2a_callback": {
          "type": "string",
          "maxLength": 2000
        }
      }
    },
    "client": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "requester_id": {
          "type": "string",
          "maxLength": 100
        },
        "wallet": {
          "type": "string",
          "maxLength": 100
        },
        "agent_id": {
          "type": "string",
          "maxLength": 100
        }
      }
    }
  },
  "required": [
    "task"
  ],
  "additionalProperties": false
}
🟢request_capability(task, capability_id, inputs, freshness, output, ...)

Find a supported outcome or capture an unmet capability request with budget, frequency, freshness and safe return path. Returns the existing durable request ID/status URL. Economic intent only; no payment or spend.

Input Schema

{
  "type": "object",
  "properties": {
    "task": {
      "type": "string",
      "minLength": 1,
      "maxLength": 500
    },
    "capability_id": {
      "type": "string",
      "maxLength": 100
    },
    "inputs": {
      "type": "object"
    },
    "freshness": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "max_age_seconds": {
          "type": "number",
          "minimum": 0
        }
      }
    },
    "output": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "format": {
          "type": "string",
          "maxLength": 40
        },
        "schema": {
          "type": "object"
        }
      }
    },
    "economics": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "max_price_usd": {
          "type": "number",
          "minimum": 0
        },
        "quantity": {
          "type": "integer",
          "minimum": 1,
          "maximum": 10000
        },
        "expected_frequency": {
          "type": "string",
          "maxLength": 100
        },
        "deadline_at": {
          "type": "string",
          "format": "date-time"
        },
        "recurring": {
          "type": "boolean"
        },
        "committed_max_budget_usd": {
          "type": "number",
          "minimum": 0
        },
        "reservation_intent": {
          "type": "boolean"
        },
        "bounty_intent": {
          "type": "boolean"
        }
      }
    },
    "urgency": {
      "type": "string",
      "maxLength": 100
    },
    "return_path": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "webhook_url": {
          "type": "string",
          "maxLength": 2000
        },
        "a2a_callback": {
          "type": "string",
          "maxLength": 2000
        }
      }
    },
    "client": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "requester_id": {
          "type": "string",
          "maxLength": 100
        },
        "wallet": {
          "type": "string",
          "maxLength": 100
        },
        "agent_id": {
          "type": "string",
          "maxLength": 100
        }
      }
    }
  },
  "required": [
    "task"
  ],
  "additionalProperties": false
}
🟢get_request_status(request_id)

Read the opaque Broker status URL. Does not reveal original inputs, callbacks or requester identity.

Input Schema

{
  "type": "object",
  "properties": {
    "request_id": {
      "type": "string",
      "pattern": "^[a-f0-9-]{36}\\.[a-f0-9-]{36}$"
    }
  },
  "required": [
    "request_id"
  ],
  "additionalProperties": false
}
🟢list_capabilities

List public capability descriptions, schemas, prices and endpoints. Frozen capabilities are marked explicitly.

Input Schema

{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}

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Evidence

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