Added value: +{
+  "description": "Pass true to add a revision to the design this chat is already saving, even when this call is a different cookbook or title. Ignored when `project` is set.",
+  "type": "boolean"
+}

Previous value: -"Pass true only when the user wants a separate, new design. Default: continue this chat's project, or your project with the same title from the last 24 h."New value: +"Pass true only when the user wants a separate, new design. Default: continue this chat's project, or your project with the same title from the last 24 h. Still wins over a matching title or cookbook."

Added value: +{
+  "description": "Title stored for this revision (not a later revision of the same project).",
+  "type": "string"
+}

Previous value: -"The /p/<slug> Studio link for the model."New value: +"Revision-pinned /p/<slug>?version= Studio link for the revision this call saved."

Previous value: -"Pass true only when the user wants a separate, new model. Default: continue this chat's project."New value: +"Pass true only when the user wants a separate, new design. Default: continue this chat's project, or your project with the same title from the last 24 h."

Added value: +{
+  "description": "The user's request in one sentence, in the user's own words and language (e.g. 'M4 bracket for a 25 mm tube, print on Bambu A1'). Helps kernelCAD improve; leave out personal data.",
+  "maxLength": 2000,
+  "type": "string"
+}

Added value: +{
+  "description": "Anonymous owner token returned as `anonToken` by an earlier open_in_studio result. Pass it on every open_in_studio call, also in a new chat, so all your anonymous projects stay together and move to the user's account when they sign in. Omit when you have none.",
+  "maxLength": 128,
+  "type": "string"
+}

Added value: +{
+  "description": "Pass true only when the user wants a separate, new model. Default: continue this chat's project.",
+  "type": "boolean"
+}

Added value: +{
+  "description": "Slug of the project to update (from the last open_in_studio result, a \"Saved to your projects\" note, list_my_projects, or a /p/<slug> link). Adds a new revision to that project instead of creating a new one, and live-updates the user's open Studio tab.",
+  "minLength": 1,
+  "type": "string"
+}

Previous value: -"Slug returned by a previous open_in_studio call. When given, updates that existing project in place (live-updating the user's open Studio tab) instead of creating a new one."New value: +"Older name for `project`. Use `project`."

Added value: +{
+  "description": "Which project was updated or created, its URL, and how to keep working on it.",
+  "type": "string"
+}

Previous value: -"The project slug; pass it back to update this project in place."New value: +"The project slug. Pass it back as `project` to save the next change to this project."

Added value: +{
+  "description": "Body AABB { min:[x,y,z], max:[x,y,z] } mm — for likeness_profile gate when no session attest.",
+  "type": "object"
+}

Added value: +{
+  "description": "Optional cabin AABB for likeness gate.",
+  "type": "object"
+}

Added value: +{
+  "description": "Hard success gate for organic/car bodies. When set, open_in_studio returns ok:false unless body-likeness is publishReady (inline body_bbox/wheels/still_verdicts, or a prior verify body-likeness pass for this exact code). Omit for WIP previews.",
+  "enum": [
+    "automotive"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "Forwarded to body-likeness gate (default true).",
+  "type": "boolean"
+}

Added value: +{
+  "description": "Agent still checklist for likeness gate [{ code, passed, finding, view? }].",
+  "items": {
+    "type": "object"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "Wheel centres + radii for likeness gate [{ center:[x,y,z], radius }].",
+  "items": {
+    "type": "object"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "CDN transforms-only animation bake URL when the script declares animationView(). ChatGPT embed Play/scrub uses this — no live session remesh.",
+  "type": "string"
+}

Added value: +{
+  "description": "True when animUrl is present (animationView timeline baked at publish).",
+  "type": "boolean"
+}

Added value: +{
+  "description": "When meshStatus=building: transient OCCT/CDN write — poll get_project or re-open_in_studio; never imply permanent 404/failure. Present under CDN when building.",
+  "type": "string"
+}

Added value: +{
+  "description": "True only when meshStatus===ready. building+meshUrl means embed is still polling.",
+  "type": "boolean"
+}

Added value: +{
+  "description": "Agent guidance: do not claim interactive paint until viewerPainted.",
+  "type": "string"
+}

Added value: +{
+  "description": "True when the project/revision was persisted. Not the same as viewerPainted.",
+  "type": "boolean"
+}

Added value: +{
+  "description": "Always false on tools/call. The Studio widget sets viewerPainted:true via updateModelContext after a correlated model_displayed ack.",
+  "type": "boolean"
+}

Added value: +{
+  "description": "Sanitized persist/repair error when meshStatus is failed.",
+  "type": "string"
+}

Removed value: -{
-  "description": "Set when the revision mesh could not be stored on the CDN. meshUrl is omitted in that case.",
-  "type": "string"
-}

Added value: +{
+  "description": "ready | building | failed | missing — explicit CDN artifact state (never silently omit meshUrl under CDN mode).",
+  "enum": [
+    "ready",
+    "building",
+    "failed",
+    "missing"
+  ],
+  "type": "string"
+}

Previous value: -"Revision-matched mesh artifact URL when available — prefer this over re-executing CAD in the embed."New value: +"Revision-matched mesh artifact URL when available — prefer this over re-executing CAD in the embed. When meshStatus is building, this is the expected CDN URL (retry until ready)."

Previous value: -"Whether the model was persisted."New value: +"Whether publish succeeded. Under CDN mode, false when mesh persist hard-failed (meshStatus:failed) — never ok:true with meshUrl silently omitted."

Added value: +{
+  "description": "Set when the revision mesh could not be stored on the CDN. meshUrl is omitted in that case.",
+  "type": "string"
+}

Previous value: -"Read-only, chrome-free /embed/<slug> viewer URL — drop into an <iframe> to embed the live model in any site or widget (no login)."New value: +"Read-only, chrome-free /embed/<slug> viewer URL — drop into an <iframe> to embed the live model in any site or widget (no login). Includes meshUrl when a revision mesh artifact is available."

Added value: +{
+  "description": "Revision-matched mesh artifact URL when available — prefer this over re-executing CAD in the embed.",
+  "type": "string"
+}

Added value: +{
+  "description": "Deploy identity so connector vs server mismatch is observable.",
+  "type": "string"
+}

Added value: +{
+  "description": "Default true: render an iso PNG preview into this same tool result (reuses the server render cache when this source was already rendered). Set false to skip rasterization and return save/viewer URLs only.",
+  "type": "boolean"
+}

Added value: +{
+  "type": "number"
+}

Added value: +{
+  "type": "boolean"
+}

Added value: +{
+  "description": "True when this result includes a displayable PNG (image content and/or previewUrl). Only then may the agent claim a preview was shown to the user.",
+  "type": "boolean"
+}

Added value: +{
+  "type": "number"
+}

Added value: +{
+  "type": "string"
+}

Added value: +{
+  "description": "included = PNG + URL; included_inline = PNG only; unavailable = save ok but no preview; skipped = include_preview:false.",
+  "enum": [
+    "included",
+    "included_inline",
+    "unavailable",
+    "skipped"
+  ],
+  "type": "string"
+}

Added value: +{
+  "description": "HTTPS URL of the PNG preview when storage signed successfully.",
+  "type": "string"
+}

Added value: +{
+  "type": "string"
+}

Added value: +{
+  "type": "number"
+}

Added value: +{
+  "description": "Complementary project files referenced by relative path from the .kcad source.",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "assetSha256": {
+        "pattern": "^[a-f0-9]{64}$",
+        "type": "string"
+      },
+      "bytesBase64": {
+        "type": "string"
+      },
+      "path": {
+        "maxLength": 240,
+        "minLength": 1,
+        "type": "string"
+      }
+    },
+    "required": [
+      "path"
+    ],
+    "type": "object"
+  },
+  "maxItems": 32,
+  "type": "array"
+}

Added value: +{
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

Added value: +{
+  "minimum": 0,
+  "type": "integer"
+}

Added value: +{
+  "description": "Immutable Studio revision persisted by this call. Read it with get_project_revision using this slug and version.",
+  "minimum": 1,
+  "type": "integer"
+}

Previous value: -"Optional list of the model's editable parameters, so Studio can show parameter controls."New value: +"Optional list of the model's editable parameters, so Studio can render parameter controls. Each item is one control derived from the .kcad params."

Added value: +{
+  "defaultValue": {
+    "description": "Current/default value of the parameter; type matches `kind`.",
+    "oneOf": [
+      {
+        "type": "number"
+      },
+      {
+        "type": "boolean"
+      },
+      {
+        "type": "string"
+      }
+    ]
+  },
+  "description": {
+    "description": "Optional human-readable explanation of the parameter.",
+    "maxLength": 200,
+    "type": "string"
+  },
+  "kind": {
+    "description": "Control type Studio should render for this parameter.",
+    "enum": [
+      "number",
+      "integer",
+      "boolean",
+      "string"
+    ],
+    "type": "string"
+  },
+  "max": {
+    "description": "Optional inclusive upper bound (numeric params).",
+    "type": "number"
+  },
+  "min": {
+    "description": "Optional inclusive lower bound (numeric params).",
+    "type": "number"
+  },
+  "name": {
+    "description": "Parameter identifier as used in the script (e.g. \"width\").",
+    "maxLength": 40,
+    "minLength": 1,
+    "type": "string"
+  },
+  "step": {
+    "description": "Optional slider/step increment (numeric params).",
+    "type": "number"
+  },
+  "unit": {
+    "description": "Optional unit label shown next to the control (e.g. \"mm\", \"deg\").",
+    "maxLength": 8,
+    "type": "string"
+  }
+}

Added value: +[
+  "name",
+  "defaultValue",
+  "kind"
+]

Added value: +"object"

Added value: +{
+  "description": "Read-only, chrome-free /embed/<slug> viewer URL — drop into an <iframe> to embed the live model in any site or widget (no login).",
+  "type": "string"
+}

Previous value: -nullNew value: +{
+  "additionalProperties": true,
+  "properties": {
+    "ok": {
+      "description": "Whether the model was persisted.",
+      "type": "boolean"
+    },
+    "slug": {
+      "description": "The project slug; pass it back to update this project in place.",
+      "type": "string"
+    },
+    "updated": {
+      "description": "True when an existing project was updated; false when a new one was created.",
+      "type": "boolean"
+    },
+    "url": {
+      "description": "The /p/<slug> Studio link for the model.",
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

Previous value: -"The full .kcad source of the model to open in Studio (the script you have been editing)."New value: +"The full .kcad source of the model to open in Studio (the script you have been editing). Optional: omit to reuse the source from your most recent evaluate_script call."

Previous value: -[
-  "code"
-]New value: +[]

Added value: +{
+  "description": "Slug returned by a previous open_in_studio call. When given, updates that existing project in place (live-updating the user's open Studio tab) instead of creating a new one.",
+  "minLength": 1,
+  "type": "string"
+}