kernelCAD

Add Workspace Target

add_workspace_target

Idempotent

Use this when you need to declare a reachability target for a connector. Durably insert <assembly>.workspace(connectorRef, { reachable, toleranceMm? }) before the final top-level return. Workspace targets are checked by solvedModel validation/review pose-envelope gates. Returns modified source plus diagnostics from re-evaluation.

Input Schema

Name	Required	Description
`code`	Yes	The .kcad.ts source code.
`reachable`	Yes	World-frame Vec3 targets the connector must be able to reach.
`toleranceMm`	No	Optional non-negative tolerance in mm.
`connector_ref`	Yes	Connector ref "<partName>.<connectorName>".
`assembly_binding`	Yes	JS identifier bound to assembly(...).

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 11, 2026

removedOutput schema / properties

Removed value: -{
-  "binding_name": {
-    "description": "JS const name bound to the new construct (when one was created).",
-    "type": "string"
-  },
-  "diagnostics": {
-    "description": "Diagnostics from re-evaluating the modified source.",
-    "items": {
-      "additionalProperties": true,
-      "type": "object"
-    },
-    "type": "array"
-  },
-  "error": {
-    "description": "Failure message (present when ok is false).",
-    "type": "string"
-  },
-  "new_code": {
-    "description": "Modified .kcad.ts source (present on success). Caller persists it.",
-    "type": "string"
-  },
-  "ok": {
-    "description": "Whether the edit applied and re-evaluated cleanly.",
-    "type": "boolean"
-  }
-}

removedOutput schema / required
```
Removed value: -[
-  "ok"
-]
```

Changed1 schema field changedJun 15, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "binding_name": {
+      "description": "JS const name bound to the new construct (when one was created).",
+      "type": "string"
+    },
+    "diagnostics": {
+      "description": "Diagnostics from re-evaluating the modified source.",
+      "items": {
+        "additionalProperties": true,
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "error": {
+      "description": "Failure message (present when ok is false).",
+      "type": "string"
+    },
+    "new_code": {
+      "description": "Modified .kcad.ts source (present on success). Caller persists it.",
+      "type": "string"
+    },
+    "ok": {
+      "description": "Whether the edit applied and re-evaluated cleanly.",
+      "type": "boolean"
+    }
+  },
+  "required": [
+    "ok"
+  ],
+  "type": "object"
+}

AddedJun 13, 2026

TDQS

A4.7/5.0

Behavior5/5

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

Beyond the annotations, it discloses that the insertion is durable, placed before the final top-level return, and that workspace targets are checked by solvedModel validation/review pose-envelope gates. It also says the tool returns modified source plus re-evaluation diagnostics, which is substantial behavioral context for a source-mutating tool.

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

Conciseness5/5

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

The description is front-loaded with the usage condition, then gives the exact insertion form, validation behavior, and return behavior. Every sentence carries operational information and there is no filler.

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?

With a full input schema, annotations covering safety and idempotency, and an output schema, the description supplies the remaining critical context: why to use it, where the code is inserted, what validates it, and what comes back. Nothing essential for correct invocation is missing.

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?

Schema description coverage is already 100%, so the baseline is 3. The description adds value by showing how the parameters compose into the emitted call (`<assembly>.workspace(connectorRef, { reachable, toleranceMm? })`), clarifying the relationship between `assembly_binding`, `connector_ref`, `reachable`, and optional `toleranceMm`.

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 states a specific verb and resource: declaring a reachability target for a connector by inserting a workspace call. It also gives the exact target syntax, so an agent knows precisely what operation this performs and how it differs from generic constraint or feature additions.

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

Usage Guidelines4/5

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

It explicitly says 'Use this when you need to declare a reachability target for a connector,' which gives clear triggering context. It does not name when-not conditions or alternatives, but there is no obvious sibling tool for this specific workspace-target operation.

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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