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List fabrication profiles

list_fab_profiles
Read-onlyIdempotent

Use before get_checks(vendor: ...) to see which fab houses a board can be checked against, and exactly which limits each one is checked to (track width, clearance, drill, annular ring, edge clearance, hole spacing). Takes no board. Layer coverage is per profile and is NOT interchangeable: a fab with no profile for a board's layer count cannot answer for it, and get_checks says so rather than guessing. Do not invent a vendor id.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "list_fab_profiles"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed4 schema fields changed
    • removedOutput schema / additionalProperties
      Removed value: -true
    • addedOutput schema / anyOf
      Added value: +[
      +  {
      +    "additionalProperties": true,
      +    "properties": {
      +      "note": {
      +        "type": "string"
      +      },
      +      "vendors": {
      +        "items": {
      +          "additionalProperties": true,
      +          "properties": {
      +            "id": {
      +              "type": "string"
      +            },
      +            "label": {
      +              "type": "string"
      +            },
      +            "profiles": {
      +              "items": {
      +                "additionalProperties": true,
      +                "properties": {
      +                  "id": {
      +                    "type": "string"
      +                  },
      +                  "label": {
      +                    "type": "string"
      +                  }
      +                },
      +                "required": [
      +                  "id",
      +                  "label"
      +                ],
      +                "type": "object"
      +              },
      +              "type": "array"
      +            }
      +          },
      +          "required": [
      +            "id",
      +            "label",
      +            "profiles"
      +          ],
      +          "type": "object"
      +        },
      +        "type": "array"
      +      }
      +    },
      +    "required": [
      +      "vendors",
      +      "note"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "additionalProperties": true,
      +    "properties": {
      +      "appError": {
      +        "type": "string"
      +      },
      +      "bytesNeeded": {
      +        "type": "integer"
      +      },
      +      "cause": {
      +        "type": "string"
      +      },
      +      "currentHead": {
      +        "type": [
      +          "string",
      +          "null"
      +        ]
      +      },
      +      "currentPolicyHash": {
      +        "type": "string"
      +      },
      +      "docsUrl": {
      +        "type": "string"
      +      },
      +      "fix": {
      +        "type": "string"
      +      },
      +      "freeBytes": {
      +        "type": "integer"
      +      },
      +      "issues": {
      +        "items": {
      +          "additionalProperties": false,
      +          "properties": {
      +            "message": {
      +              "type": "string"
      +            },
      +            "path": {
      +              "type": "string"
      +            },
      +            "received": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "path",
      +            "message"
      +          ],
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "message": {
      +        "type": "string"
      +      },
      +      "operationId": {
      +        "type": "string"
      +      },
      +      "projectsLeft": {
      +        "type": "integer"
      +      },
      +      "reason": {
      +        "type": "string"
      +      },
      +      "resetsAt": {
      +        "type": "string"
      +      },
      +      "retryAfterMs": {
      +        "type": "integer"
      +      },
      +      "retryable": {
      +        "type": "boolean"
      +      },
      +      "sourceSaved": {
      +        "type": "boolean"
      +      },
      +      "storedResultAvailable": {
      +        "type": "boolean"
      +      },
      +      "suggestions": {
      +        "items": {
      +          "additionalProperties": false,
      +          "properties": {
      +            "board": {
      +              "type": "string"
      +            },
      +            "name": {
      +              "type": "string"
      +            },
      +            "url": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "board",
      +            "name",
      +            "url"
      +          ],
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "uploadLinks": {
      +        "items": {
      +          "additionalProperties": false,
      +          "properties": {
      +            "bytes": {
      +              "type": "integer"
      +            },
      +            "expiresAt": {
      +              "type": "string"
      +            },
      +            "headers": {
      +              "type": "object"
      +            },
      +            "method": {
      +              "const": "PUT"
      +            },
      +            "path": {
      +              "type": "string"
      +            },
      +            "sha256": {
      +              "type": "string"
      +            },
      +            "uploadUrl": {
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "path",
      +            "bytes",
      +            "sha256",
      +            "uploadUrl",
      +            "method",
      +            "headers",
      +            "expiresAt"
      +          ],
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "url": {
      +        "type": "string"
      +      },
      +      "visibility": {
      +        "type": "string"
      +      }
      +    },
      +    "required": [
      +      "reason",
      +      "message"
      +    ],
      +    "type": "object"
      +  }
      +]
    • removedOutput schema / properties
      Removed value: -{
      -  "note": {
      -    "type": "string"
      -  },
      -  "vendors": {
      -    "items": {
      -      "additionalProperties": true,
      -      "properties": {
      -        "id": {
      -          "type": "string"
      -        },
      -        "label": {
      -          "type": "string"
      -        },
      -        "profiles": {
      -          "items": {
      -            "additionalProperties": true,
      -            "properties": {
      -              "id": {
      -                "type": "string"
      -              },
      -              "label": {
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "id",
      -              "label"
      -            ],
      -            "type": "object"
      -          },
      -          "type": "array"
      -        }
      -      },
      -      "required": [
      -        "id",
      -        "label",
      -        "profiles"
      -      ],
      -      "type": "object"
      -    },
      -    "type": "array"
      -  }
      -}
    • removedOutput schema / required
      Removed value: -[
      -  "vendors",
      -  "note"
      -]
  2. First observed

TDQS

A4.6/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so the safety profile is covered; the description adds non-annotation behavior: layer coverage is per-profile and not interchangeable, and get_checks will refuse rather than guess when a profile lacks a layer count. That explains what the returned list does and does not authorize, which the annotations cannot convey. It stops short of describing the shape of the returned list, though the output schema carries that.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the action and the sequencing rule, then the coverage caveat and the anti-fabrication warning. It is dense but every clause carries operational weight; the only near-redundancy is the parenthetical limit list, which could be trimmed given the output schema.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a no-argument listing tool with an output schema, the description supplies the missing semantic layer: why to call it, what makes profiles non-substitutable, and how a mismatch surfaces downstream. Return-value details are correctly left to the output schema.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With zero parameters the baseline is 4, and the description reinforces it by explicitly stating "Takes no board," which preempts an agent trying to pass a board id. No further parameter meaning is needed.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource (list fabrication profiles) and immediately frames it against the sibling get_checks, telling the agent this returns fab houses plus the exact limits each is checked to. An agent can distinguish it from get_checks and from the other list_* siblings without opening either schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It states the sequencing explicitly ("Use before get_checks(vendor: ...)") and names the parameter the follow-up call needs, which is the exact when-to-use condition. It also adds a negative constraint ("Do not invent a vendor id"), closing the common failure path where an agent fabricates an id instead of calling this first.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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