[fern-autoversion] feat!: remove error discriminator fields and deprecated type exports

Remove required `error` fields from conflict response DTOs, delete
several exported types, and rename `StructuredOutputControllerRunResponseZero`
to `StructuredOutputControllerRunResponseOne`. Also adds `Ghl` and `Code`
variants to tool union types, typed `ConflictError` (409) handling to
`AssistantsClient.update` and all `StructuredOutputsClient` mutating
methods, and new `reasoningEffort` fields on Anthropic models.

Key changes:
- Remove `AssistantPinnedConflictResponseDto.error` and delete `AssistantPinnedConflictResponseDtoError` type
- Remove `TrafficAllocationStaleConflictResponseDto.error` and delete `TrafficAllocationStaleConflictResponseDtoError` type
- Delete exported types: `CreateTrieveCredentialDto`, `CreateTrieveKnowledgeBaseDto`, `TrieveKnowledgeBase`, `TrieveKnowledgeBaseImport`, `UpdateTrieveKnowledgeBaseDto`, `GhlToolType`, `UpdateCodeToolDtoType`
- Rename `StructuredOutputControllerRunResponseZero` → `StructuredOutputControllerRunResponseOne`
- Add `Ghl` variant to `CreateToolsResponse`, `DeleteToolsResponse`, `GetToolsResponse`, `ListToolsResponseItem`, `UpdateToolsResponse`; add `Code` variant to `CreateToolsRequest` and `UpdateToolsRequestBody`
- Add typed `ConflictError` (409) throws to `AssistantsClient.update` and `StructuredOutputsClient` create/remove/update methods
- Add optional `reasoningEffort` field to `AnthropicModel` and `AnthropicBedrockModel`

🌿 Generated with Fern

Author: fern-api[bot]

.fern/metadata.json

@@ -16,5 +16,5 @@
     "invokedBy": "ci",
     "requestedVersion": "AUTO",
     "ciProvider": "unknown",
-    "sdkVersion": "0.0.0-fern-placeholder"
+    "sdkVersion": "4.0.0"
 }

changelog.md

@@ -1,3 +1,11 @@
+## [4.0.0] - 2026-10-14
+### Added
+- **`AnthropicModelReasoningEffort`** — new enum (`none`, `low`, `medium`, `high`, `xhigh`, `max`) for controlling adaptive thinking on `claude-haiku-5-5`; `ClaudeHaiku55` added to all Anthropic model enums.
+- **`Gemini38Flash`** — new `gemini-3.8-flash` model value added to `GoogleModelModel`, `EvalGoogleModelModel`, `WorkflowGoogleModelModel`, `GoogleTranscriberModel`, `FallbackGoogleTranscriberModel`, and `KnowledgeBaseModel`.
+- **`Sonic36` and `Sonic3620260827`** — new Cartesia Sonic 3.6 model values added to `CartesiaVoiceModel` and `FallbackCartesiaVoiceModel`; `Or` (Odia) and `Ur` (Urdu) language codes added to `CartesiaVoiceLanguage` and `FallbackCartesiaVoiceLanguage`.
+- **`AssistantManagedConflictResponseDto`**, **`AssistantManagedConflictResponseDtoError`**, and **`AssistantManagedVapiAgentsDto`** — new types representing HTTP 409 conflict responses when a Vapi Agents-managed assistant rejects a write operation.
+- **`baselineVersion`** — new optional field on all tool interfaces (e.g. `FunctionTool`, `ApiRequestTool`, `McpTool`, etc.) exposing the display-only baseline label before a version is stored; `serverMessage.requestSucceeded`, `serverMessage.requestFailed`, and `pipeline.denoiserFailed` added to `JsonQueryOnEventsTableOn`.
+
 ## [3.0.0] - 2026-10-08
 ### Breaking Changes
 - **`ToolPinnedConflictResponseDtoError`** and the standalone **`ToolPinnedConflictResponseDto.error`** field have been removed from the SDK. The API still returns `error: "tool_pinned"` in pinned-tool HTTP 409 responses. After validating or narrowing the error body, use **`Vapi.ConflictErrorBody`** or **`Vapi.ConflictErrorBody.ToolPinned`** to read its `error` discriminator. Replace the removed constant with the literal `"tool_pinned"`. The `message` field contains the human-readable reason and does not replace the discriminator.

package.json

@@ -1,6 +1,6 @@
 {
     "name": "@vapi-ai/server-sdk",
-    "version": "0.0.0-fern-placeholder",
+    "version": "4.0.0",
     "private": false,
     "repository": {
         "type": "git",

src/BaseClient.ts

@@ -52,8 +52,8 @@ export function normalizeClientOptions<T extends BaseClientOptions = BaseClientO
         {
             "X-Fern-Language": "JavaScript",
             "X-Fern-SDK-Name": "@vapi-ai/server-sdk",
-            "X-Fern-SDK-Version": "0.0.0-fern-placeholder",
-            "User-Agent": "@vapi-ai/server-sdk/0.0.0-fern-placeholder",
+            "X-Fern-SDK-Version": "4.0.0",
+            "User-Agent": "@vapi-ai/server-sdk/4.0.0",
             "X-Fern-Runtime": core.RUNTIME.type,
             "X-Fern-Runtime-Version": core.RUNTIME.version,
         },

src/version.ts

@@ -1 +1 @@
-export const SDK_VERSION = "0.0.0-fern-placeholder";
+export const SDK_VERSION = "4.0.0";