feat: add dedicated Azure OpenAI provider using @ai-sdk/azure package

Author: roomote

.changeset/azure-ai-sdk-migration.md

@@ -0,0 +1,13 @@
+---
+"roo-cline": minor
+"@roo-code/types": minor
+---
+
+Add dedicated Azure OpenAI provider using @ai-sdk/azure package
+
+- Add new "azure" provider type to support Azure OpenAI deployments via the AI SDK
+- Implement AzureHandler following the established pattern from DeepSeek, Groq, and Fireworks migrations
+- Add azureSchema with Azure-specific options: azureApiKey, azureResourceName, azureDeploymentName, azureApiVersion
+- Use streamText/generateText from the AI SDK for cleaner streaming implementation
+- Support tool calling via tool-input-start/delta/end events
+- Include cache metrics extraction from providerMetadata

packages/types/src/provider-settings.ts

@@ -119,6 +119,7 @@ export const providerNames = [
 	...customProviders,
 	...fauxProviders,
 	"anthropic",
+	"azure",
 	"bedrock",
 	"baseten",
 	"cerebras",
@@ -417,12 +418,20 @@ const basetenSchema = apiModelIdProviderModelSchema.extend({
 	basetenApiKey: z.string().optional(),
 })
 
+const azureSchema = apiModelIdProviderModelSchema.extend({
+	azureApiKey: z.string().optional(),
+	azureResourceName: z.string().optional(),
+	azureDeploymentName: z.string().optional(),
+	azureApiVersion: z.string().optional(),
+})
+
 const defaultSchema = z.object({
 	apiProvider: z.undefined(),
 })
 
 export const providerSettingsSchemaDiscriminated = z.discriminatedUnion("apiProvider", [
 	anthropicSchema.merge(z.object({ apiProvider: z.literal("anthropic") })),
+	azureSchema.merge(z.object({ apiProvider: z.literal("azure") })),
 	openRouterSchema.merge(z.object({ apiProvider: z.literal("openrouter") })),
 	bedrockSchema.merge(z.object({ apiProvider: z.literal("bedrock") })),
 	vertexSchema.merge(z.object({ apiProvider: z.literal("vertex") })),
@@ -464,6 +473,7 @@ export const providerSettingsSchemaDiscriminated = z.discriminatedUnion("apiProv
 export const providerSettingsSchema = z.object({
 	apiProvider: providerNamesSchema.optional(),
 	...anthropicSchema.shape,
+	...azureSchema.shape,
 	...openRouterSchema.shape,
 	...bedrockSchema.shape,
 	...vertexSchema.shape,
@@ -552,6 +562,7 @@ export const isTypicalProvider = (key: unknown): key is TypicalProvider =>
 
 export const modelIdKeysByProvider: Record<TypicalProvider, ModelIdKey> = {
 	anthropic: "apiModelId",
+	azure: "apiModelId",
 	openrouter: "openRouterModelId",
 	bedrock: "apiModelId",
 	vertex: "apiModelId",
@@ -628,6 +639,11 @@ export const MODELS_BY_PROVIDER: Record<
 		label: "Anthropic",
 		models: Object.keys(anthropicModels),
 	},
+	azure: {
+		id: "azure",
+		label: "Azure OpenAI",
+		models: [], // Azure uses deployment names configured by the user
+	},
 	bedrock: {
 		id: "bedrock",
 		label: "Amazon Bedrock",

pnpm-lock.yaml

@@ -8,6 +8,7 @@ import { ApiStream } from "./transform/stream"
 import {
 	AnthropicHandler,
 	AwsBedrockHandler,
+	AzureHandler,
 	CerebrasHandler,
 	OpenRouterHandler,
 	VertexHandler,
@@ -125,6 +126,8 @@ export function buildApiHandler(configuration: ProviderSettings): ApiHandler {
 	switch (apiProvider) {
 		case "anthropic":
 			return new AnthropicHandler(options)
+		case "azure":
+			return new AzureHandler(options)
 		case "openrouter":
 			return new OpenRouterHandler(options)
 		case "bedrock":