reconsumeralization · pull · Jul 15, 2026 · Jul 15, 2026 · Jul 15, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -9,11 +9,13 @@
 - [terminal] fixed the file link provider logging a `UriError` when a printed URL (e.g. `https://example.com/path`) was matched as a local file candidate; such `//host/path` candidates are now skipped and left to the URL link provider [#17767](https://github.com/eclipse-theia/theia/pull/17767)
 - [ai-anthropic, ai-chat, ai-chat-ui, ai-core, ai-openai] added provider-native server-side compaction for chat sessions, modeled as a model capability (`LanguageModelMetaData.serverSideCompactionSupport`) plus layered activation: a global preference (`ai-features.chat.serverSideCompaction`, default on), a per-provider override, and a per-session override (in the session settings dialog) that wins over both. Honored by the Anthropic Messages API (beta) and the OpenAI Responses API; the compaction marker is persisted in the session, replayed on subsequent requests, surfaced as an inline chat marker, and reflected in the token-usage tooltip (cumulative usage and a "compacted Nx" count). Providers/models without the capability ignore it [#17636](https://github.com/eclipse-theia/theia/issues/17636)
 - [ai-chat-ui] replaced scroll-direction heuristics in `ChatViewTreeWidget` with Virtuoso's `atBottomStateChange` for reliable auto-scroll during streaming [#17728](https://github.com/eclipse-theia/theia/pull/17728)
+- [ai-vercel-ai] deprecated `@theia/ai-vercel-ai` package [#TBD](https://github.com/eclipse-theia/theia/pull/TBD)
 - [electron] upgraded Electron from 39.8.7 to 42.3.0 (Node 24, Chromium 148) [#17586](https://github.com/eclipse-theia/theia/pull/17586)
 
 <a name="breaking_changes_1.74.0">[Breaking Changes:](#breaking_changes_1.74.0)</a>
 
 - [ai-chat-ui] `ChatViewTreeWidget` scroll-lock is now driven by Virtuoso's `atBottomStateChange` callback instead of scroll-direction heuristics; the following `protected` members have been removed: `handleScrollEvent()`, `getCurrentScrollTop()`, `isAtAbsoluteBottom()`, `updateScrollToBottomButtonState()`, `lastScrollTop`, `_scrollButtonDebounceTimer`, `SCROLL_BUTTON_GRACE_PERIOD`, and the `updateScrollToRow()` override. Subclasses that override any of these should use the new `handleAtBottomStateChange(isAtBottom: boolean)` method instead [#17728](https://github.com/eclipse-theia/theia/pull/17728)
+- [ai-vercel-ai] deprecated the `@theia/ai-vercel-ai` experimental extension and stopped publishing it on npm. Please use the dedicated `@theia/ai-openai` and `@theia/ai-anthropic` providers instead, which cover the same models with first-class support. [#TBD](https://github.com/eclipse-theia/theia/pull/TBD)
 - [core] removed `TreeWidget.onScroll`, `TreeWidget.onScrollEmitter`, `TreeWidget.getVirtualizedScrollState()`, `TreeWidget.isScrolledToBottom()`, the `TreeScrollEvent` interface, and the `TreeScrollState` interface. Use `TreeWidget.onAtBottomStateChange` to react to bottom-state changes instead [#17728](https://github.com/eclipse-theia/theia/pull/17728)
 - [electron] upgraded Electron from 39.8.7 to 42.3.0. Downstream Electron applications must update their `electron` devDependency to `42.3.0`. Electron 42 bundles Node 24 (up from Node 22), which may affect native modules or Node APIs used by downstream applications. See the Electron breaking changes for [40.0](https://www.electronjs.org/docs/latest/breaking-changes#planned-breaking-api-changes-400), [41.0](https://www.electronjs.org/docs/latest/breaking-changes#planned-breaking-api-changes-410), and [42.0](https://www.electronjs.org/docs/latest/breaking-changes#planned-breaking-api-changes-420). [#17586](https://github.com/eclipse-theia/theia/pull/17586)
 

diff --git a/doc/Migration.md b/doc/Migration.md
@@ -101,6 +101,22 @@ For example, in an `electron-builder` configuration, ensure the `lib/backend/she
 
 The `lib/**/*` glob already covers `lib/backend/shell-integrations/`. If you use a more restrictive `files` pattern, make sure `lib/backend/shell-integrations/**/*` is explicitly included, as `ShellIntegrationInjector` resolves these scripts relative to `__dirname` (i.e. `lib/backend/`).
 
+### v1.74.0
+
+#### Deprecation of @theia/ai-vercel-ai package
+
+The `@theia/ai-vercel-ai` package has been marked as deprecated and is no longer published on npm. It will be removed from the Theia codebase after a deprecation period. The package only wrapped OpenAI and Anthropic models, both of which are already covered by the dedicated `@theia/ai-openai` and `@theia/ai-anthropic` providers with first-class support.
+
+If your application depends on `@theia/ai-vercel-ai`, migrate as follows:
+
+- **OpenAI models**: use `@theia/ai-openai`. Move `ai-features.vercelAi.openaiApiKey` to `ai-features.openAiOfficial.openAiApiKey` and define models in `ai-features.openAiOfficial.officialOpenAiModels`.
+- **Anthropic models**: use `@theia/ai-anthropic`. Move `ai-features.vercelAi.anthropicApiKey` to `ai-features.anthropic.AnthropicApiKey` and define models in `ai-features.anthropic.AnthropicModels`.
+- **Custom endpoints** (`ai-features.vercelAi.customModels`): split entries by their `provider` field into the matching provider-specific preference:
+  - `provider: 'openai'` → `ai-features.openAiCustom.customOpenAiModels`
+  - `provider: 'anthropic'` → `ai-features.anthropicCustom.customAnthropicModels`
+
+The dedicated provider preferences offer the same fields plus additional ones (e.g. Azure `apiVersion`/`deployment`, `useResponseApi`, `reasoningSupport` for OpenAI; `useCaching`, `maxRetries` for Anthropic).
+
 ### v1.73.0
 
 #### Custom agents reorganized into per-agent folders [#17523](https://github.com/eclipse-theia/theia/pull/17523)

diff --git a/examples/browser/package.json b/examples/browser/package.json
@@ -46,7 +46,6 @@
     "@theia/ai-registry": "1.73.0",
     "@theia/ai-scanoss": "1.73.0",
     "@theia/ai-terminal": "1.73.0",
-    "@theia/ai-vercel-ai": "1.73.0",
     "@theia/api-provider-sample": "1.73.0",
     "@theia/api-samples": "1.73.0",
     "@theia/bulk-edit": "1.73.0",

diff --git a/examples/browser/tsconfig.json b/examples/browser/tsconfig.json
@@ -77,9 +77,6 @@
     {
       "path": "../../packages/ai-terminal"
     },
-    {
-      "path": "../../packages/ai-vercel-ai"
-    },
     {
       "path": "../../packages/bulk-edit"
     },

diff --git a/examples/electron/package.json b/examples/electron/package.json
@@ -50,7 +50,6 @@
     "@theia/ai-registry": "1.73.0",
     "@theia/ai-scanoss": "1.73.0",
     "@theia/ai-terminal": "1.73.0",
-    "@theia/ai-vercel-ai": "1.73.0",
     "@theia/api-provider-sample": "1.73.0",
     "@theia/api-samples": "1.73.0",
     "@theia/bulk-edit": "1.73.0",

diff --git a/examples/electron/tsconfig.json b/examples/electron/tsconfig.json
@@ -80,9 +80,6 @@
     {
       "path": "../../packages/ai-terminal"
     },
-    {
-      "path": "../../packages/ai-vercel-ai"
-    },
     {
       "path": "../../packages/bulk-edit"
     },

diff --git a/package-lock.json b/package-lock.json
diff --git a/packages/ai-openai/src/common/openai-preferences.ts b/packages/ai-openai/src/common/openai-preferences.ts
@@ -53,12 +53,8 @@ on the machine running Theia. Use the environment variable `OPENAI_API_KEY` to s
             default: false,
             title: AI_CORE_PREFERENCES_TITLE,
             markdownDescription: nls.localize('theia/ai/openai/useResponseApi/mdDescription',
-                'Use the newer OpenAI Response API instead of the Chat Completion API for official OpenAI models.\
-\
-This setting only applies to official OpenAI models - custom providers must configure this individually.\
-\
-Note that for the response API, tool call definitions must satisfy Open AI\'s [strict schema definition](https://platform.openai.com/docs/guides/function-calling#strict-mode).\
-Best effort is made to convert non-conformant schemas, but errors are still possible.')
+                'Use the newer OpenAI Response API instead of the Chat Completion API for official OpenAI models. ' +
+                'This setting only applies to official OpenAI models - custom providers must configure this individually.')
         },
         [SERVER_SIDE_COMPACTION_PREF]: {
             type: 'string',

diff --git a/packages/ai-openai/src/node/openai-model-utils.spec.ts b/packages/ai-openai/src/node/openai-model-utils.spec.ts
@@ -16,8 +16,7 @@
 import { expect } from 'chai';
 import { OpenAiModelUtils } from './openai-language-model';
 import { LanguageModelMessage } from '@theia/ai-core';
-import { OpenAiResponseApiUtils, recursiveStrictJSONSchema } from './openai-response-api-utils';
-import type { JSONSchema, JSONSchemaDefinition } from 'openai/lib/jsonschema';
+import { OpenAiResponseApiUtils } from './openai-response-api-utils';
 
 const utils = new OpenAiModelUtils();
 const responseUtils = new OpenAiResponseApiUtils();
@@ -495,105 +494,4 @@ describe('OpenAiModelUtils - processMessagesForResponseApi', () => {
         });
     });
 
-    describe('recursiveStrictJSONSchema', () => {
-        it('should return the same object and not modify it when schema has no properties to strictify', () => {
-            const schema: JSONSchema = { type: 'string', description: 'Simple string' };
-            const originalJson = JSON.stringify(schema);
-
-            const result = recursiveStrictJSONSchema(schema);
-
-            expect(result).to.equal(schema);
-            expect(JSON.stringify(schema)).to.equal(originalJson);
-            const resultObj = result as JSONSchema;
-            expect(resultObj).to.not.have.property('additionalProperties');
-            expect(resultObj).to.not.have.property('required');
-        });
-
-        it('should not mutate original but return a new strictified schema when branching applies (properties/items)', () => {
-            const original: JSONSchema = {
-                type: 'object',
-                properties: {
-                    path: { type: 'string' },
-                    data: {
-                        type: 'array',
-                        items: {
-                            type: 'object',
-                            properties: {
-                                a: { type: 'string' }
-                            }
-                        }
-                    }
-                }
-            };
-            const originalClone = JSON.parse(JSON.stringify(original));
-
-            const resultDef = recursiveStrictJSONSchema(original);
-            const result = resultDef as JSONSchema;
-
-            expect(result).to.not.equal(original);
-            expect(original).to.deep.equal(originalClone);
-
-            expect(result.additionalProperties).to.equal(false);
-            expect(result.required).to.have.members(['path', 'data']);
-
-            const itemsDef = (result.properties?.data as JSONSchema).items as JSONSchemaDefinition;
-            expect(itemsDef).to.be.ok;
-            const itemsObj = itemsDef as JSONSchema;
-            expect(itemsObj.additionalProperties).to.equal(false);
-            expect(itemsObj.required).to.have.members(['a']);
-
-            const originalItems = ((original.properties!.data as JSONSchema).items) as JSONSchema;
-            expect(originalItems).to.not.have.property('additionalProperties');
-            expect(originalItems).to.not.have.property('required');
-        });
-
-        it('should strictify nested parameters schema and not mutate the original', () => {
-            const replacementProperties: Record<string, JSONSchema> = {
-                oldContent: { type: 'string', description: 'The exact content to be replaced. Must match exactly, including whitespace, comments, etc.' },
-                newContent: { type: 'string', description: 'The new content to insert in place of matched old content.' },
-                multiple: { type: 'boolean', description: 'Set to true if multiple occurrences of the oldContent are expected to be replaced.' }
-            };
-
-            const parameters: JSONSchema = {
-                type: 'object',
-                properties: {
-                    path: { type: 'string', description: 'The path of the file where content will be replaced.' },
-                    replacements: {
-                        type: 'array',
-                        items: {
-                            type: 'object',
-                            properties: replacementProperties,
-                            required: ['oldContent', 'newContent']
-                        },
-                        description: 'An array of replacement objects, each containing oldContent and newContent strings.'
-                    },
-                    reset: {
-                        type: 'boolean',
-                        description: 'Set to true to clear any existing pending changes for this file and start fresh. Default is false, which merges with existing changes.'
-                    }
-                },
-                required: ['path', 'replacements']
-            };
-
-            const originalClone = JSON.parse(JSON.stringify(parameters));
-
-            const strictifiedDef = recursiveStrictJSONSchema(parameters);
-            const strictified = strictifiedDef as JSONSchema;
-
-            expect(strictified).to.not.equal(parameters);
-            expect(parameters).to.deep.equal(originalClone);
-
-            expect(strictified.additionalProperties).to.equal(false);
-            expect(strictified.required).to.have.members(['path', 'replacements', 'reset']);
-
-            const items = (strictified.properties!.replacements as JSONSchema).items as JSONSchema;
-            expect(items.additionalProperties).to.equal(false);
-            expect(items.required).to.have.members(['oldContent', 'newContent', 'multiple']);
-
-            const origItems = ((parameters.properties!.replacements as JSONSchema).items) as JSONSchema;
-            expect(origItems.required).to.deep.equal(['oldContent', 'newContent']);
-            expect(origItems).to.not.have.property('additionalProperties');
-        });
-    });
-
 });
diff --git a/packages/ai-openai/src/node/openai-response-api-utils.spec.ts b/packages/ai-openai/src/node/openai-response-api-utils.spec.ts
@@ -28,6 +28,39 @@ async function* toStream(events: unknown[]): AsyncIterable<unknown> {
 }
 
 describe('OpenAiResponseApiUtils', () => {
+    it('passes tool parameters through unchanged in non-strict mode', () => {
+        const utils = new OpenAiResponseApiUtils();
+        const parameters = {
+            type: 'object' as const,
+            properties: {
+                metadata: {
+                    type: 'object' as const,
+                    additionalProperties: { type: 'string' }
+                }
+            }
+        };
+
+        const converted = utils.convertToolsForResponseApi([{
+            id: 'lookup',
+            name: 'lookup',
+            parameters,
+            handler: async () => 'result'
+        }]);
+
+        expect(converted).to.have.lengthOf(1);
+        const convertedTool = converted?.[0];
+        expect(convertedTool).to.include({
+            type: 'function',
+            name: 'lookup',
+            parameters,
+            strict: false
+        });
+        if (convertedTool?.type !== 'function') {
+            throw new Error('Expected a function tool');
+        }
+        expect(convertedTool.parameters).to.equal(parameters);
+    });
+
     it('emits per-iteration usage for Response API tool calls instead of accumulated usage', async () => {
         const utils = new OpenAiResponseApiUtils();
         const streams = [

diff --git a/packages/ai-openai/src/node/openai-response-api-utils.ts b/packages/ai-openai/src/node/openai-response-api-utils.ts
@@ -23,7 +23,6 @@ import {
     TextMessage,
     ToolInvocationContext,
     ToolRequest,
-    ToolRequestParameters,
     UserRequest
 } from '@theia/ai-core';
 import { CancellationToken, nls, unreachable } from '@theia/core';
@@ -44,7 +43,6 @@ import type {
 } from 'openai/resources/responses/responses';
 import type { ResponsesModel } from 'openai/resources/shared';
 import { DeveloperMessageSettings, OpenAiModelUtils } from './openai-language-model';
-import { JSONSchema, JSONSchemaDefinition } from 'openai/lib/jsonschema';
 
 /**
  * User-facing name under which the provider's built-in deferred-tool search is surfaced in the chat UI.
@@ -159,11 +157,11 @@ export class OpenAiResponseApiUtils {
             type: 'function' as const,
             name: tool.name,
             description: tool.description || '',
-            // The Response API is very strict re: JSON schema: all properties must be listed as required,
-            // and additional properties must be disallowed.
-            // https://platform.openai.com/docs/guides/function-calling#strict-mode
-            parameters: this.recursiveStrictToolCallParameters(tool.parameters),
-            strict: true,
+            // Tool schemas are passed through as-is (non-strict). Strict mode (`strict: true`) is opt-in and
+            // only supports a JSON-schema subset (all properties required, `additionalProperties: false`
+            // everywhere), which cannot express the open-ended maps common in MCP tool schemas.
+            parameters: tool.parameters as unknown as FunctionTool['parameters'],
+            strict: false,
             defer_loading: deferred.has(tool.id) ? true : undefined
         }));
         if (deferred.size > 0) {
@@ -173,10 +171,6 @@ export class OpenAiResponseApiUtils {
         return converted;
     }
 
-    recursiveStrictToolCallParameters(schema: ToolRequestParameters): FunctionTool['parameters'] {
-        return recursiveStrictJSONSchema(schema) as FunctionTool['parameters'];
-    }
-
     protected createSimpleResponseApiStreamIterator(
         stream: AsyncIterable<ResponseStreamEvent>,
         cancellationToken?: CancellationToken
@@ -883,50 +877,3 @@ export function processSystemMessages(
     }
     return messages;
 }
-
-export function recursiveStrictJSONSchema(schema: JSONSchemaDefinition): JSONSchemaDefinition {
-    if (typeof schema === 'boolean') { return schema; }
-    let result: JSONSchema | undefined = undefined;
-    if (schema.properties) {
-        result ??= { ...schema };
-        result.additionalProperties = false;
-        result.required = Object.keys(schema.properties);
-        result.properties = Object.fromEntries(Object.entries(schema.properties).map(([key, props]) => [key, recursiveStrictJSONSchema(props)]));
-    }
-    if (schema.items) {
-        result ??= { ...schema };
-        result.items = Array.isArray(schema.items)
-            ? schema.items.map(recursiveStrictJSONSchema)
-            : recursiveStrictJSONSchema(schema.items);
-    }
-    if (schema.oneOf) {
-        result ??= { ...schema };
-        result.oneOf = schema.oneOf.map(recursiveStrictJSONSchema);
-    }
-    if (schema.anyOf) {
-        result ??= { ...schema };
-        result.anyOf = schema.anyOf.map(recursiveStrictJSONSchema);
-    }
-    if (schema.allOf) {
-        result ??= { ...schema };
-        result.allOf = schema.allOf.map(recursiveStrictJSONSchema);
-    }
-    if (schema.if) {
-        result ??= { ...schema };
-        result.if = recursiveStrictJSONSchema(schema.if);
-    }
-    if (schema.then) {
-        result ??= { ...schema };
-        result.then = recursiveStrictJSONSchema(schema.then);
-    }
-    if (schema.else) {
-        result ??= { ...schema };
-        result.else = recursiveStrictJSONSchema(schema.else);
-    }
-    if (schema.not) {
-        result ??= { ...schema };
-        result.not = recursiveStrictJSONSchema(schema.not);
-    }
-
-    return result ?? schema;
-}
diff --git a/packages/ai-vercel-ai/README.md b/packages/ai-vercel-ai/README.md
@@ -5,6 +5,7 @@
 <img src='https://raw.githubusercontent.com/eclipse-theia/theia/master/logo/theia.svg?sanitize=true' alt='theia-ext-logo' width='100px' />
 
 <h2>ECLIPSE THEIA - VERCEL AI SDK INTEGRATION</h2>
+<h2>This extension is DEPRECATED!</h2>
 
 <hr />
 

diff --git a/packages/ai-vercel-ai/package.json b/packages/ai-vercel-ai/package.json
@@ -2,6 +2,7 @@
   "name": "@theia/ai-vercel-ai",
   "version": "1.73.0",
   "description": "Theia - Vercel AI SDK Integration",
+  "private": true,
   "dependencies": {
     "@ai-sdk/anthropic": "^1.2.12",
     "@ai-sdk/openai": "^1.3.24",
-Original file line number
+Diff line change
@@ Expand Up / @@ -77,9 +77,6 @@ @@
         {
           "path": "../../packages/ai-terminal"
         },
-        {
-          "path": "../../packages/ai-vercel-ai"
-        },
         {
           "path": "../../packages/bulk-edit"
         },
@@ Expand Down @@