feat: add x-title and http-referer header to all openai providers

 - Provides the ability for Open AI compatible gateways, such as LiteLLM, Open Router, Requesty to determine originating app.
 - Uses standard set by Open Router.

Author: refactorthis

.changeset/wise-pears-join.md

@@ -0,0 +1,5 @@
+---
+"roo-cline": patch
+---
+
+Improved observability of openai compatible APIs, by sending x-title and http-referer headers, as per Open Router standard.

src/api/providers/__tests__/openai.test.ts

@@ -90,6 +90,20 @@ describe("OpenAiHandler", () => {
 			})
 			expect(handlerWithCustomUrl).toBeInstanceOf(OpenAiHandler)
 		})
+
+		it("should set default headers correctly", () => {
+			// Get the mock constructor from the jest mock system
+			const openAiMock = jest.requireMock("openai").default
+
+			expect(openAiMock).toHaveBeenCalledWith({
+				baseURL: expect.any(String),
+				apiKey: expect.any(String),
+				defaultHeaders: {
+					"HTTP-Referer": "https://github.com/RooVetGit/Roo-Cline",
+					"X-Title": "Roo Code",
+				},
+			})
+		})
 	})
 
 	describe("createMessage", () => {

src/api/providers/openai.ts

@@ -16,10 +16,14 @@ import { ApiStream, ApiStreamUsageChunk } from "../transform/stream"
 import { BaseProvider } from "./base-provider"
 
 const DEEP_SEEK_DEFAULT_TEMPERATURE = 0.6
-export interface OpenAiHandlerOptions extends ApiHandlerOptions {
-	defaultHeaders?: Record<string, string>
+
+export const defaultHeaders = {
+	"HTTP-Referer": "https://github.com/RooVetGit/Roo-Cline",
+	"X-Title": "Roo Code",
 }
 
+export interface OpenAiHandlerOptions extends ApiHandlerOptions {}
+
 export class OpenAiHandler extends BaseProvider implements SingleCompletionHandler {
 	protected options: OpenAiHandlerOptions
 	private client: OpenAI
@@ -47,9 +51,10 @@ export class OpenAiHandler extends BaseProvider implements SingleCompletionHandl
 				baseURL,
 				apiKey,
 				apiVersion: this.options.azureApiVersion || azureOpenAiDefaultApiVersion,
+				defaultHeaders,
 			})
 		} else {
-			this.client = new OpenAI({ baseURL, apiKey, defaultHeaders: this.options.defaultHeaders })
+			this.client = new OpenAI({ baseURL, apiKey, defaultHeaders })
 		}
 	}
 

src/api/providers/openrouter.ts

@@ -13,6 +13,7 @@ import { convertToR1Format } from "../transform/r1-format"
 import { DEEP_SEEK_DEFAULT_TEMPERATURE } from "./constants"
 import { getModelParams, SingleCompletionHandler } from ".."
 import { BaseProvider } from "./base-provider"
+import { defaultHeaders } from "./openai"
 
 // Add custom interface for OpenRouter params.
 type OpenRouterChatCompletionParams = OpenAI.Chat.ChatCompletionCreateParams & {
@@ -37,11 +38,6 @@ export class OpenRouterHandler extends BaseProvider implements SingleCompletionH
 		const baseURL = this.options.openRouterBaseUrl || "https://openrouter.ai/api/v1"
 		const apiKey = this.options.openRouterApiKey ?? "not-provided"
 
-		const defaultHeaders = {
-			"HTTP-Referer": "https://github.com/RooVetGit/Roo-Cline",
-			"X-Title": "Roo Code",
-		}
-
 		this.client = new OpenAI({ baseURL, apiKey, defaultHeaders })
 	}
 

src/api/providers/requesty.ts

@@ -16,10 +16,6 @@ export class RequestyHandler extends OpenAiHandler {
 			openAiModelId: options.requestyModelId ?? requestyDefaultModelId,
 			openAiBaseUrl: "https://router.requesty.ai/v1",
 			openAiCustomModelInfo: options.requestyModelInfo ?? requestyModelInfoSaneDefaults,
-			defaultHeaders: {
-				"HTTP-Referer": "https://github.com/RooVetGit/Roo-Cline",
-				"X-Title": "Roo Code",
-			},
 		})
 	}