Font Design MCP

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glyph_edit

Apply vector operations and drawing primitives to edit a single glyph in a font master. Perform atomic edits like moving points, adding contours, or transforming components.

Instructions

Apply typed vector operations or drawing primitives atomically to one glyph in master_id (default: 'default'). Use detail=full for added/removed/touched IDs. Replacements are explicit.

Input Schema

TableJSON Schema

Name	Required	Default
`create`	No
`detail`	No	summary
`summary`	No
`glyph_id`	Yes
`master_id`	No	default
`operations`	Yes
`project_id`	Yes
`expected_revision`	Yes

Output Schema

TableJSON Schema

Name	Required	Description	Default
`ok`	Yes
`data`	No
`error`	No
`changed`	No
`summary`	Yes
`revision`	No
`warnings`	No
`project_id`	No

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedv0.6.0Sep 12, 2026

addedInput schema / $defs / DetachStrokeNetwork

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "op": {
+      "const": "detach_stroke_network",
+      "type": "string"
+    }
+  },
+  "required": [
+    "op"
+  ],
+  "type": "object"
+}

addedInput schema / $defs / NetworkStroke

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "cap": {
+      "default": "butt",
+      "enum": [
+        "round",
+        "butt",
+        "square"
+      ],
+      "type": "string"
+    },
+    "id": {
+      "pattern": "^[a-zA-Z_][a-zA-Z0-9_]{0,15}$",
+      "type": "string"
+    },
+    "join": {
+      "default": "miter",
+      "enum": [
+        "round",
+        "bevel",
+        "miter"
+      ],
+      "type": "string"
+    },
+    "path": {
+      "maxLength": 16000,
+      "minLength": 1,
+      "type": "string"
+    },
+    "width_parameter": {
+      "pattern": "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$",
+      "type": "string"
+    }
+  },
+  "required": [
+    "id",
+    "path",
+    "width_parameter"
+  ],
+  "type": "object"
+}

addedInput schema / $defs / SetStrokeNetwork

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "network": {
+      "$ref": "#/$defs/StrokeNetwork"
+    },
+    "op": {
+      "const": "stroke_network",
+      "type": "string"
+    },
+    "replace": {
+      "default": false,
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "op",
+    "network"
+  ],
+  "type": "object"
+}

addedInput schema / $defs / StrokeNetwork

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "advance": {
+      "default": 600,
+      "maximum": 16000,
+      "minimum": 0,
+      "type": "number"
+    },
+    "horizontal_scale": {
+      "default": 1,
+      "exclusiveMinimum": 0,
+      "maximum": 4,
+      "type": "number"
+    },
+    "origin_x": {
+      "default": 0,
+      "maximum": 16000,
+      "minimum": -16000,
+      "type": "number"
+    },
+    "parameters": {
+      "maxProperties": 16,
+      "minProperties": 1,
+      "patternProperties": {
+        "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$": {
+          "exclusiveMinimum": 0,
+          "maximum": 2000,
+          "type": "number"
+        }
+      },
+      "type": "object"
+    },
+    "strokes": {
+      "items": {
+        "$ref": "#/$defs/NetworkStroke"
+      },
+      "maxItems": 16,
+      "minItems": 1,
+      "type": "array"
+    }
+  },
+  "required": [
+    "parameters",
+    "strokes"
+  ],
+  "type": "object"
+}

addedInput schema / $defs / UpdateStrokeNetwork

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "advance": {
+      "anyOf": [
+        {
+          "maximum": 16000,
+          "minimum": 0,
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null
+    },
+    "horizontal_scale": {
+      "anyOf": [
+        {
+          "exclusiveMinimum": 0,
+          "maximum": 4,
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null
+    },
+    "op": {
+      "const": "update_stroke_network",
+      "type": "string"
+    },
+    "parameters": {
+      "maxProperties": 16,
+      "patternProperties": {
+        "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$": {
+          "exclusiveMinimum": 0,
+          "maximum": 2000,
+          "type": "number"
+        }
+      },
+      "type": "object"
+    }
+  },
+  "required": [
+    "op"
+  ],
+  "type": "object"
+}

addedInput schema / properties / operations / items / discriminator / mapping / detach_stroke_network
```
Added value: +"#/$defs/DetachStrokeNetwork"
```
addedInput schema / properties / operations / items / discriminator / mapping / stroke_network
```
Added value: +"#/$defs/SetStrokeNetwork"
```
addedInput schema / properties / operations / items / discriminator / mapping / update_stroke_network
```
Added value: +"#/$defs/UpdateStrokeNetwork"
```

changedInput schema / properties / operations / items / oneOf

Previous value: -[
-  {
-    "$ref": "#/$defs/PutContour"
-  },
-  {
-    "$ref": "#/$defs/MovePoint"
-  },
-  {
-    "$ref": "#/$defs/MoveHandle"
-  },
-  {
-    "$ref": "#/$defs/SetSmooth"
-  },
-  {
-    "$ref": "#/$defs/DetachComposition"
-  },
-  {
-    "$ref": "#/$defs/Transform"
-  },
-  {
-    "$ref": "#/$defs/PutComponent"
-  },
-  {
-    "$ref": "#/$defs/PutAnchor"
-  },
-  {
-    "$ref": "#/$defs/Remove"
-  },
-  {
-    "$ref": "#/$defs/SetUnicodes"
-  },
-  {
-    "$ref": "#/$defs/ReplaceGlyph"
-  },
-  {
-    "$ref": "#/$defs/FilledPath"
-  },
-  {
-    "$ref": "#/$defs/StrokePath"
-  },
-  {
-    "$ref": "#/$defs/Primitive"
-  },
-  {
-    "$ref": "#/$defs/Duplicate"
-  },
-  {
-    "$ref": "#/$defs/ComposeAccent"
-  }
-]New value: +[
+  {
+    "$ref": "#/$defs/PutContour"
+  },
+  {
+    "$ref": "#/$defs/MovePoint"
+  },
+  {
+    "$ref": "#/$defs/MoveHandle"
+  },
+  {
+    "$ref": "#/$defs/SetSmooth"
+  },
+  {
+    "$ref": "#/$defs/DetachComposition"
+  },
+  {
+    "$ref": "#/$defs/Transform"
+  },
+  {
+    "$ref": "#/$defs/PutComponent"
+  },
+  {
+    "$ref": "#/$defs/PutAnchor"
+  },
+  {
+    "$ref": "#/$defs/Remove"
+  },
+  {
+    "$ref": "#/$defs/SetUnicodes"
+  },
+  {
+    "$ref": "#/$defs/ReplaceGlyph"
+  },
+  {
+    "$ref": "#/$defs/FilledPath"
+  },
+  {
+    "$ref": "#/$defs/StrokePath"
+  },
+  {
+    "$ref": "#/$defs/SetStrokeNetwork"
+  },
+  {
+    "$ref": "#/$defs/UpdateStrokeNetwork"
+  },
+  {
+    "$ref": "#/$defs/DetachStrokeNetwork"
+  },
+  {
+    "$ref": "#/$defs/Primitive"
+  },
+  {
+    "$ref": "#/$defs/Duplicate"
+  },
+  {
+    "$ref": "#/$defs/ComposeAccent"
+  }
+]

Changed9 schema fields changedv0.5.0Sep 10, 2026

addedInput schema / $defs / ComposeAccent / properties / auto_align
```
Added value: +{
+  "default": false,
+  "type": "boolean"
+}
```

addedInput schema / $defs / DetachComposition

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "op": {
+      "const": "detach_composition",
+      "type": "string"
+    }
+  },
+  "required": [
+    "op"
+  ],
+  "type": "object"
+}

addedInput schema / $defs / MoveHandle

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "mode": {
+      "default": "aligned",
+      "enum": [
+        "aligned",
+        "symmetric"
+      ],
+      "type": "string"
+    },
+    "op": {
+      "const": "move_handle",
+      "type": "string"
+    },
+    "point_id": {
+      "pattern": "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$",
+      "type": "string"
+    },
+    "x": {
+      "maximum": 16000,
+      "minimum": -16000,
+      "type": "number"
+    },
+    "y": {
+      "maximum": 16000,
+      "minimum": -16000,
+      "type": "number"
+    }
+  },
+  "required": [
+    "op",
+    "point_id",
+    "x",
+    "y"
+  ],
+  "type": "object"
+}

addedInput schema / $defs / MovePoint / properties / preserve_handles
```
Added value: +{
+  "default": false,
+  "type": "boolean"
+}
```

addedInput schema / $defs / SetSmooth

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "op": {
+      "const": "set_smooth",
+      "type": "string"
+    },
+    "point_id": {
+      "pattern": "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$",
+      "type": "string"
+    },
+    "smooth": {
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "op",
+    "point_id",
+    "smooth"
+  ],
+  "type": "object"
+}

addedInput schema / properties / operations / items / discriminator / mapping / detach_composition
```
Added value: +"#/$defs/DetachComposition"
```
addedInput schema / properties / operations / items / discriminator / mapping / move_handle
```
Added value: +"#/$defs/MoveHandle"
```
addedInput schema / properties / operations / items / discriminator / mapping / set_smooth
```
Added value: +"#/$defs/SetSmooth"
```

changedInput schema / properties / operations / items / oneOf

Previous value: -[
-  {
-    "$ref": "#/$defs/PutContour"
-  },
-  {
-    "$ref": "#/$defs/MovePoint"
-  },
-  {
-    "$ref": "#/$defs/Transform"
-  },
-  {
-    "$ref": "#/$defs/PutComponent"
-  },
-  {
-    "$ref": "#/$defs/PutAnchor"
-  },
-  {
-    "$ref": "#/$defs/Remove"
-  },
-  {
-    "$ref": "#/$defs/SetUnicodes"
-  },
-  {
-    "$ref": "#/$defs/ReplaceGlyph"
-  },
-  {
-    "$ref": "#/$defs/FilledPath"
-  },
-  {
-    "$ref": "#/$defs/StrokePath"
-  },
-  {
-    "$ref": "#/$defs/Primitive"
-  },
-  {
-    "$ref": "#/$defs/Duplicate"
-  },
-  {
-    "$ref": "#/$defs/ComposeAccent"
-  }
-]New value: +[
+  {
+    "$ref": "#/$defs/PutContour"
+  },
+  {
+    "$ref": "#/$defs/MovePoint"
+  },
+  {
+    "$ref": "#/$defs/MoveHandle"
+  },
+  {
+    "$ref": "#/$defs/SetSmooth"
+  },
+  {
+    "$ref": "#/$defs/DetachComposition"
+  },
+  {
+    "$ref": "#/$defs/Transform"
+  },
+  {
+    "$ref": "#/$defs/PutComponent"
+  },
+  {
+    "$ref": "#/$defs/PutAnchor"
+  },
+  {
+    "$ref": "#/$defs/Remove"
+  },
+  {
+    "$ref": "#/$defs/SetUnicodes"
+  },
+  {
+    "$ref": "#/$defs/ReplaceGlyph"
+  },
+  {
+    "$ref": "#/$defs/FilledPath"
+  },
+  {
+    "$ref": "#/$defs/StrokePath"
+  },
+  {
+    "$ref": "#/$defs/Primitive"
+  },
+  {
+    "$ref": "#/$defs/Duplicate"
+  },
+  {
+    "$ref": "#/$defs/ComposeAccent"
+  }
+]

Changed81 schema fields changedv0.4.3Sep 9, 2026

removedInput schema / $defs / Anchor / properties / id / title
```
Removed value: -"Id"
```
removedInput schema / $defs / Anchor / properties / name / title
```
Removed value: -"Name"
```
removedInput schema / $defs / Anchor / properties / x / title
```
Removed value: -"X"
```
removedInput schema / $defs / Anchor / properties / y / title
```
Removed value: -"Y"
```
removedInput schema / $defs / Anchor / title
```
Removed value: -"Anchor"
```
removedInput schema / $defs / Component / properties / base / title
```
Removed value: -"Base"
```
removedInput schema / $defs / Component / properties / id / title
```
Removed value: -"Id"
```
removedInput schema / $defs / Component / properties / transform / title
```
Removed value: -"Transform"
```
removedInput schema / $defs / Component / title
```
Removed value: -"Component"
```

addedInput schema / $defs / ComposeAccent

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "base": {
+      "pattern": "^(?:\\.notdef|[a-zA-Z_][a-zA-Z0-9_.]{0,62})$",
+      "type": "string"
+    },
+    "base_anchor": {
+      "default": "top",
+      "pattern": "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$",
+      "type": "string"
+    },
+    "mark": {
+      "pattern": "^(?:\\.notdef|[a-zA-Z_][a-zA-Z0-9_.]{0,62})$",
+      "type": "string"
+    },
+    "mark_anchor": {
+      "default": "_top",
+      "pattern": "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$",
+      "type": "string"
+    },
+    "op": {
+      "const": "compose_accent",
+      "type": "string"
+    }
+  },
+  "required": [
+    "op",
+    "base",
+    "mark"
+  ],
+  "type": "object"
+}

removedInput schema / $defs / Contour / properties / id / title
```
Removed value: -"Id"
```
removedInput schema / $defs / Contour / properties / points / title
```
Removed value: -"Points"
```
removedInput schema / $defs / Contour / title
```
Removed value: -"Contour"
```

addedInput schema / $defs / Duplicate

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "matrix": {
+      "default": [
+        1,
+        0,
+        0,
+        1,
+        0,
+        0
+      ],
+      "maxItems": 6,
+      "minItems": 6,
+      "prefixItems": [
+        {
+          "maximum": 16,
+          "minimum": -16,
+          "type": "number"
+        },
+        {
+          "maximum": 16,
+          "minimum": -16,
+          "type": "number"
+        },
+        {
+          "maximum": 16,
+          "minimum": -16,
+          "type": "number"
+        },
+        {
+          "maximum": 16,
+          "minimum": -16,
+          "type": "number"
+        },
+        {
+          "maximum": 16000,
+          "minimum": -16000,
+          "type": "number"
+        },
+        {
+          "maximum": 16000,
+          "minimum": -16000,
+          "type": "number"
+        }
+      ],
+      "type": "array"
+    },
+    "op": {
+      "const": "duplicate",
+      "type": "string"
+    },
+    "source": {
+      "pattern": "^(?:\\.notdef|[a-zA-Z_][a-zA-Z0-9_.]{0,62})$",
+      "type": "string"
+    }
+  },
+  "required": [
+    "op",
+    "source"
+  ],
+  "type": "object"
+}

addedInput schema / $defs / FilledPath

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "advance": {
+      "anyOf": [
+        {
+          "maximum": 16000,
+          "minimum": 0,
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null
+    },
+    "id": {
+      "default": "outline",
+      "pattern": "^[a-zA-Z_][a-zA-Z0-9_]{0,23}$",
+      "type": "string"
+    },
+    "op": {
+      "const": "filled_path",
+      "type": "string"
+    },
+    "paths": {
+      "items": {
+        "maxLength": 16000,
+        "minLength": 1,
+        "type": "string"
+      },
+      "maxItems": 32,
+      "minItems": 1,
+      "type": "array"
+    },
+    "replace": {
+      "default": false,
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "op",
+    "paths"
+  ],
+  "type": "object"
+}

removedInput schema / $defs / Glyph / properties / advance / title
```
Removed value: -"Advance"
```
removedInput schema / $defs / Glyph / properties / anchors / title
```
Removed value: -"Anchors"
```
removedInput schema / $defs / Glyph / properties / components / title
```
Removed value: -"Components"
```
removedInput schema / $defs / Glyph / properties / contours / title
```
Removed value: -"Contours"
```
removedInput schema / $defs / Glyph / properties / unicodes / title
```
Removed value: -"Unicodes"
```
removedInput schema / $defs / Glyph / title
```
Removed value: -"Glyph"
```
removedInput schema / $defs / MovePoint / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / MovePoint / properties / point_id / title
```
Removed value: -"Point Id"
```
removedInput schema / $defs / MovePoint / properties / x / title
```
Removed value: -"X"
```
removedInput schema / $defs / MovePoint / properties / y / title
```
Removed value: -"Y"
```
removedInput schema / $defs / MovePoint / title
```
Removed value: -"MovePoint"
```
removedInput schema / $defs / Point / properties / id / title
```
Removed value: -"Id"
```
removedInput schema / $defs / Point / properties / smooth / title
```
Removed value: -"Smooth"
```
removedInput schema / $defs / Point / properties / type / title
```
Removed value: -"Type"
```
removedInput schema / $defs / Point / properties / x / title
```
Removed value: -"X"
```
removedInput schema / $defs / Point / properties / y / title
```
Removed value: -"Y"
```
removedInput schema / $defs / Point / title
```
Removed value: -"Point"
```

addedInput schema / $defs / Primitive

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "advance": {
+      "anyOf": [
+        {
+          "maximum": 16000,
+          "minimum": 0,
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null
+    },
+    "height": {
+      "exclusiveMinimum": 0,
+      "maximum": 16000,
+      "type": "number"
+    },
+    "id": {
+      "default": "outline",
+      "pattern": "^[a-zA-Z_][a-zA-Z0-9_]{0,23}$",
+      "type": "string"
+    },
+    "op": {
+      "const": "primitive",
+      "type": "string"
+    },
+    "replace": {
+      "default": false,
+      "type": "boolean"
+    },
+    "shape": {
+      "enum": [
+        "rectangle",
+        "ellipse"
+      ],
+      "type": "string"
+    },
+    "width": {
+      "exclusiveMinimum": 0,
+      "maximum": 16000,
+      "type": "number"
+    },
+    "x": {
+      "maximum": 16000,
+      "minimum": -16000,
+      "type": "number"
+    },
+    "y": {
+      "maximum": 16000,
+      "minimum": -16000,
+      "type": "number"
+    }
+  },
+  "required": [
+    "op",
+    "shape",
+    "x",
+    "y",
+    "width",
+    "height"
+  ],
+  "type": "object"
+}

removedInput schema / $defs / PutAnchor / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / PutAnchor / properties / replace / title
```
Removed value: -"Replace"
```
removedInput schema / $defs / PutAnchor / title
```
Removed value: -"PutAnchor"
```
removedInput schema / $defs / PutComponent / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / PutComponent / properties / replace / title
```
Removed value: -"Replace"
```
removedInput schema / $defs / PutComponent / title
```
Removed value: -"PutComponent"
```
removedInput schema / $defs / PutContour / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / PutContour / properties / replace / title
```
Removed value: -"Replace"
```
removedInput schema / $defs / PutContour / title
```
Removed value: -"PutContour"
```
removedInput schema / $defs / Remove / properties / id / title
```
Removed value: -"Id"
```
removedInput schema / $defs / Remove / properties / kind / title
```
Removed value: -"Kind"
```
removedInput schema / $defs / Remove / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / Remove / title
```
Removed value: -"Remove"
```
removedInput schema / $defs / ReplaceGlyph / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / ReplaceGlyph / title
```
Removed value: -"ReplaceGlyph"
```
removedInput schema / $defs / SetUnicodes / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / SetUnicodes / properties / unicodes / title
```
Removed value: -"Unicodes"
```
removedInput schema / $defs / SetUnicodes / title
```
Removed value: -"SetUnicodes"
```

addedInput schema / $defs / StrokePath

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "advance": {
+      "anyOf": [
+        {
+          "maximum": 16000,
+          "minimum": 0,
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null
+    },
+    "cap": {
+      "default": "round",
+      "enum": [
+        "round",
+        "butt",
+        "square"
+      ],
+      "type": "string"
+    },
+    "id": {
+      "default": "outline",
+      "pattern": "^[a-zA-Z_][a-zA-Z0-9_]{0,23}$",
+      "type": "string"
+    },
+    "join": {
+      "default": "round",
+      "enum": [
+        "round",
+        "bevel",
+        "miter"
+      ],
+      "type": "string"
+    },
+    "op": {
+      "const": "stroke_path",
+      "type": "string"
+    },
+    "paths": {
+      "items": {
+        "maxLength": 16000,
+        "minLength": 1,
+        "type": "string"
+      },
+      "maxItems": 32,
+      "minItems": 1,
+      "type": "array"
+    },
+    "replace": {
+      "default": false,
+      "type": "boolean"
+    },
+    "width": {
+      "exclusiveMinimum": 0,
+      "maximum": 2000,
+      "type": "number"
+    }
+  },
+  "required": [
+    "op",
+    "paths",
+    "width"
+  ],
+  "type": "object"
+}

removedInput schema / $defs / Transform / properties / contour_ids / title
```
Removed value: -"Contour Ids"
```
removedInput schema / $defs / Transform / properties / matrix / title
```
Removed value: -"Matrix"
```
removedInput schema / $defs / Transform / properties / op / title
```
Removed value: -"Op"
```
removedInput schema / $defs / Transform / title
```
Removed value: -"Transform"
```
removedInput schema / properties / create / title
```
Removed value: -"Create"
```

addedInput schema / properties / detail

Added value: +{
+  "default": "summary",
+  "enum": [
+    "summary",
+    "full"
+  ],
+  "type": "string"
+}

removedInput schema / properties / expected_revision / title
```
Removed value: -"Expected Revision"
```
removedInput schema / properties / glyph_id / title
```
Removed value: -"Glyph Id"
```

addedInput schema / properties / master_id

Added value: +{
+  "default": "default",
+  "pattern": "^[a-zA-Z0-9_][a-zA-Z0-9_.-]{0,63}$",
+  "type": "string"
+}

addedInput schema / properties / operations / items / discriminator / mapping / compose_accent
```
Added value: +"#/$defs/ComposeAccent"
```
addedInput schema / properties / operations / items / discriminator / mapping / duplicate
```
Added value: +"#/$defs/Duplicate"
```
addedInput schema / properties / operations / items / discriminator / mapping / filled_path
```
Added value: +"#/$defs/FilledPath"
```
addedInput schema / properties / operations / items / discriminator / mapping / primitive
```
Added value: +"#/$defs/Primitive"
```
addedInput schema / properties / operations / items / discriminator / mapping / stroke_path
```
Added value: +"#/$defs/StrokePath"
```

changedInput schema / properties / operations / items / oneOf

Previous value: -[
-  {
-    "$ref": "#/$defs/PutContour"
-  },
-  {
-    "$ref": "#/$defs/MovePoint"
-  },
-  {
-    "$ref": "#/$defs/Transform"
-  },
-  {
-    "$ref": "#/$defs/PutComponent"
-  },
-  {
-    "$ref": "#/$defs/PutAnchor"
-  },
-  {
-    "$ref": "#/$defs/Remove"
-  },
-  {
-    "$ref": "#/$defs/SetUnicodes"
-  },
-  {
-    "$ref": "#/$defs/ReplaceGlyph"
-  }
-]New value: +[
+  {
+    "$ref": "#/$defs/PutContour"
+  },
+  {
+    "$ref": "#/$defs/MovePoint"
+  },
+  {
+    "$ref": "#/$defs/Transform"
+  },
+  {
+    "$ref": "#/$defs/PutComponent"
+  },
+  {
+    "$ref": "#/$defs/PutAnchor"
+  },
+  {
+    "$ref": "#/$defs/Remove"
+  },
+  {
+    "$ref": "#/$defs/SetUnicodes"
+  },
+  {
+    "$ref": "#/$defs/ReplaceGlyph"
+  },
+  {
+    "$ref": "#/$defs/FilledPath"
+  },
+  {
+    "$ref": "#/$defs/StrokePath"
+  },
+  {
+    "$ref": "#/$defs/Primitive"
+  },
+  {
+    "$ref": "#/$defs/Duplicate"
+  },
+  {
+    "$ref": "#/$defs/ComposeAccent"
+  }
+]

removedInput schema / properties / operations / title
```
Removed value: -"Operations"
```
removedInput schema / properties / project_id / title
```
Removed value: -"Project Id"
```
removedInput schema / properties / summary / title
```
Removed value: -"Summary"
```

changedInput schema / required

Previous value: -[
-  "project_id",
-  "expected_revision",
-  "glyph_id",
-  "operations"
-]New value: +[
+  "glyph_id",
+  "operations",
+  "project_id",
+  "expected_revision"
+]

removedInput schema / title
```
Removed value: -"GlyphEdit"
```
removedOutput schema / properties / changed / title
```
Removed value: -"Changed"
```
removedOutput schema / properties / data / title
```
Removed value: -"Data"
```
removedOutput schema / properties / error / title
```
Removed value: -"Error"
```
removedOutput schema / properties / ok / title
```
Removed value: -"Ok"
```
removedOutput schema / properties / project_id / title
```
Removed value: -"Project Id"
```
removedOutput schema / properties / revision / title
```
Removed value: -"Revision"
```
removedOutput schema / properties / summary / title
```
Removed value: -"Summary"
```
removedOutput schema / properties / warnings / title
```
Removed value: -"Warnings"
```
removedOutput schema / title
```
Removed value: -"Result"
```

First observedv0.1.0Sep 8, 2026

TDQS

C2.9/5.0

Behavior3/5

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

Annotations already declare the mutation profile (readOnlyHint=false, idempotentHint=false, destructiveHint=false), so the safety bar is lower. The description usefully adds that operations are applied 'atomically' and that 'replacements are explicit', which is real behavioral context beyond the annotations, but it omits the concurrency semantics (expected_revision) that govern a mutation of this kind.

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?

Three tightly written sentences with the primary action front-loaded and no filler. It is efficient, though 'Replacements are explicit' is somewhat cryptic in isolation.

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

Completeness2/5

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

For a highly complex mutation tool (19 operation variants, 8 params, optimistic concurrency via expected_revision, and a create flag), the description is far too terse. An output schema exists so return values need not be explained, but the missing param coverage and lack of concurrency/creation guidance leave real gaps.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must carry the full explanatory burden, yet it only mentions master_id's default and the detail=full option. Key parameters such as expected_revision, create, and the 19-variant operations payload receive no explanation, leaving the parameter semantics largely undocumented.

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

Purpose4/5

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

States a specific verb (apply) and resource (typed vector operations/drawing primitives to one glyph in a master), which is clear. It does not, however, differentiate itself from siblings like glyph_get or font_edit, so an agent must infer the boundary from the word 'operations' alone.

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

Usage Guidelines2/5

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

There is no guidance on when to use this versus font_edit, glyph_get, or spacing_edit. The only conditional offered is the detail=full hint, which concerns output verbosity, not tool selection. No prerequisites or exclusions are stated.

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

glyph_edit

Instructions

Input Schema

Output Schema

Schema Changelog

TDQS

Other Tools