Get figure rendering capabilities

figure_get_capabilities

Use this to inspect the supported semantic 2D figure objects, construction definitions, assertions, limits, and compact snippets before calling figure_render_draft.

Contract metadata

{
  "annotations": {
    "readOnlyHint": true,
    "destructiveHint": false,
    "idempotentHint": true,
    "openWorldHint": false
  },
  "fileParams": [],
  "requiredPermission": "read",
  "security": {
    "type": "oauth2",
    "scopes": [
      "chalksurf:read"
    ]
  }
}

Input schema

The server advertises this JSON Schema to MCP clients. Runtime authorization and business-rule checks still apply.

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {},
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {
    "assertions": {
      "items": {
        "additionalProperties": false,
        "properties": {
          "description": {
            "type": "string"
          },
          "measured": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "requiredFields": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "tolerance": {
            "type": "string"
          },
          "type": {
            "type": "string"
          }
        },
        "required": [
          "type",
          "description",
          "requiredFields",
          "tolerance",
          "measured"
        ],
        "type": "object"
      },
      "type": "array"
    },
    "limits": {
      "additionalProperties": false,
      "properties": {
        "coordinateMax": {
          "type": "number"
        },
        "coordinateMin": {
          "type": "number"
        },
        "maxAssertions": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "maxCanvasHeight": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "maxCanvasWidth": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "maxLabelLength": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "maxObjects": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "maxSvgBytes": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "minCanvasHeight": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        },
        "minCanvasWidth": {
          "maximum": 9007199254740991,
          "minimum": -9007199254740991,
          "type": "integer"
        }
      },
      "required": [
        "maxObjects",
        "maxAssertions",
        "minCanvasWidth",
        "maxCanvasWidth",
        "minCanvasHeight",
        "maxCanvasHeight",
        "coordinateMin",
        "coordinateMax",
        "maxLabelLength",
        "maxSvgBytes"
      ],
      "type": "object"
    },
    "microSnippets": {
      "items": {
        "additionalProperties": false,
        "properties": {
          "assertionType": {
            "type": "string"
          },
          "definitionKind": {
            "type": "string"
          },
          "label": {
            "type": "string"
          },
          "objectType": {
            "type": "string"
          },
          "spec": {}
        },
        "required": [
          "label",
          "spec"
        ],
        "type": "object"
      },
      "type": "array"
    },
    "objects": {
      "items": {
        "additionalProperties": false,
        "properties": {
          "definitions": {
            "items": {
              "additionalProperties": false,
              "properties": {
                "degeneracyRules": {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                },
                "description": {
                  "type": "string"
                },
                "kind": {
                  "type": "string"
                },
                "optionalFields": {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                },
                "requiredFields": {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                }
              },
              "required": [
                "kind",
                "requiredFields",
                "optionalFields",
                "degeneracyRules",
                "description"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "description": {
            "type": "string"
          },
          "type": {
            "type": "string"
          }
        },
        "required": [
          "type",
          "description",
          "definitions"
        ],
        "type": "object"
      },
      "type": "array"
    },
    "reviewRubric": {
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "schemaVersion": {
      "const": 1,
      "type": "number"
    },
    "style": {
      "additionalProperties": false,
      "properties": {
        "colors": {
          "items": {
            "enum": [
              "black",
              "gray",
              "lightGray",
              "red",
              "orange",
              "green",
              "blue",
              "purple",
              "white",
              "none"
            ],
            "type": "string"
          },
          "type": "array"
        },
        "dashes": {
          "items": {
            "enum": [
              "solid",
              "dashed",
              "dotted"
            ],
            "type": "string"
          },
          "type": "array"
        },
        "numericFields": {
          "items": {
            "type": "string"
          },
          "type": "array"
        }
      },
      "required": [
        "colors",
        "dashes",
        "numericFields"
      ],
      "type": "object"
    }
  },
  "required": [
    "schemaVersion",
    "limits",
    "objects",
    "assertions",
    "style",
    "reviewRubric",
    "microSnippets"
  ],
  "type": "object"
}