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feat: Add Anthropic Custom provider with configurable model parameters #754

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90abe03
Add Anthropic Custom provider
Jun 28, 2026
47ee096
修复: 简化 Anthropic Custom 以匹配 Anthropic 提供商
Jun 28, 2026
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18 changes: 15 additions & 3 deletions packages/types/src/provider-settings.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -85,7 +85,7 @@ export const isInternalProvider = (key: string): key is InternalProvider =>
* Custom providers are completely configurable within Roo Code settings.
*/

export const customProviders = ["openai"] as const
export const customProviders = ["openai", "anthropic-custom"] as const

export type CustomProvider = (typeof customProviders)[number]

Expand Down Expand Up @@ -262,6 +262,15 @@ const openAiSchema = baseProviderSettingsSchema.extend({
openAiHeaders: z.record(z.string(), z.string()).optional(),
})

const anthropicCustomSchema = baseProviderSettingsSchema.extend({
anthropicCustomBaseUrl: z.string().optional(),
anthropicCustomApiKey: z.string().optional(),
anthropicCustomModelId: z.string().optional(),
anthropicCustomModelInfo: modelInfoSchema.nullish(),
anthropicCustomStreamingEnabled: z.boolean().optional(),
anthropicCustomHeaders: z.record(z.string(), z.string()).optional(),
})

const ollamaSchema = baseProviderSettingsSchema.extend({
ollamaModelId: z.string().optional(),
ollamaBaseUrl: z.string().optional(),
Expand Down Expand Up @@ -427,6 +436,7 @@ export const providerSettingsSchemaDiscriminated = z.discriminatedUnion("apiProv
bedrockSchema.merge(z.object({ apiProvider: z.literal("bedrock") })),
vertexSchema.merge(z.object({ apiProvider: z.literal("vertex") })),
openAiSchema.merge(z.object({ apiProvider: z.literal("openai") })),
anthropicCustomSchema.merge(z.object({ apiProvider: z.literal("anthropic-custom") })),
ollamaSchema.merge(z.object({ apiProvider: z.literal("ollama") })),
vsCodeLmSchema.merge(z.object({ apiProvider: z.literal("vscode-lm") })),
lmStudioSchema.merge(z.object({ apiProvider: z.literal("lmstudio") })),
Expand Down Expand Up @@ -463,6 +473,7 @@ export const providerSettingsSchema = z.object({
...bedrockSchema.shape,
...vertexSchema.shape,
...openAiSchema.shape,
...anthropicCustomSchema.shape,
...ollamaSchema.shape,
...vsCodeLmSchema.shape,
...lmStudioSchema.shape,
Expand Down Expand Up @@ -512,6 +523,7 @@ export const modelIdKeys = [
"apiModelId",
"openRouterModelId",
"openAiModelId",
"anthropicCustomModelId",
"ollamaModelId",
"lmStudioModelId",
"lmStudioDraftModelId",
Expand Down Expand Up @@ -575,7 +587,7 @@ export const modelIdKeysByProvider: Record<TypicalProvider, ModelIdKey> = {
*/

// Providers that use Anthropic-style API protocol.
export const ANTHROPIC_STYLE_PROVIDERS: ProviderName[] = ["anthropic", "bedrock", "minimax"]
export const ANTHROPIC_STYLE_PROVIDERS: ProviderName[] = ["anthropic", "anthropic-custom", "bedrock", "minimax"]

export const getApiProtocol = (provider: ProviderName | undefined, modelId?: string): "anthropic" | "openai" => {
if (provider && ANTHROPIC_STYLE_PROVIDERS.includes(provider)) {
Expand Down Expand Up @@ -615,7 +627,7 @@ export const getApiProtocol = (provider: ProviderName | undefined, modelId?: str
*/

export const MODELS_BY_PROVIDER: Record<
Exclude<ProviderName, "fake-ai" | "gemini-cli" | "openai">,
Exclude<ProviderName, "fake-ai" | "gemini-cli" | "openai" | "anthropic-custom">,
{ id: ProviderName; label: string; models: string[] }
> = {
anthropic: {
Expand Down
1 change: 1 addition & 0 deletions src/api/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,7 @@ export function buildApiHandler(configuration: ProviderSettings): ApiHandler {

switch (apiProvider) {
case "anthropic":
case "anthropic-custom":
return new AnthropicHandler(options)
case "openrouter":
return new OpenRouterHandler(options)
Expand Down
23 changes: 17 additions & 6 deletions src/api/providers/anthropic.ts
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Expand Up @@ -8,6 +8,7 @@ import {
type AnthropicModelId,
anthropicDefaultModelId,
anthropicModels,
openAiModelInfoSaneDefaults,
ANTHROPIC_DEFAULT_MAX_TOKENS,
ApiProviderError,
} from "@roo-code/types"
Expand Down Expand Up @@ -38,12 +39,17 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
super()
this.options = options

const baseURL = this.options.anthropicCustomBaseUrl || this.options.anthropicBaseUrl || undefined
const apiKey = this.options.anthropicCustomApiKey || this.options.apiKey
const apiKeyFieldName =
this.options.anthropicBaseUrl && this.options.anthropicUseAuthToken ? "authToken" : "apiKey"
baseURL && this.options.anthropicUseAuthToken && !this.options.anthropicCustomApiKey
? "authToken"
: "apiKey"

this.client = new Anthropic({
baseURL: this.options.anthropicBaseUrl || undefined,
[apiKeyFieldName]: this.options.apiKey,
baseURL,
[apiKeyFieldName]: apiKey,
defaultHeaders: this.options.anthropicCustomHeaders,
Comment on lines +42 to +52

@coderabbitai coderabbitai Bot Jun 28, 2026

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🔒 Security & Privacy | 🟠 Major | ⚡ Quick win

Keep anthropic-custom isolated from the standard Anthropic connection fields.

This fallback chain mixes the two provider namespaces. If a profile still has anthropicBaseUrl populated from the standard Anthropic setup, selecting anthropic-custom with its custom base URL disabled will still route prompts to that old proxy instead of Anthropic’s default endpoint. The same bleed-through can happen with credentials because buildApiHandler() no longer passes apiProvider into the handler, so this constructor has no way to tell which namespace should win. Please derive endpoint/auth strictly from the active provider instead of falling back across anthropic* and anthropicCustom*.

🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@src/api/providers/anthropic.ts` around lines 42 - 52, The Anthropic client
setup is mixing standard and custom provider settings, so `AnthropicApiHandler`
should derive `baseURL`, auth field selection, and headers strictly from the
active provider namespace instead of falling back between `anthropic*` and
`anthropicCustom*`. Update the constructor logic in
`src/api/providers/anthropic.ts` so `anthropic-custom` only reads
`anthropicCustomBaseUrl`, `anthropicCustomApiKey`, and `anthropicCustomHeaders`,
while the standard Anthropic path only uses the non-custom fields; avoid using
the old fallback chain in `this.client = new Anthropic(...)`, and make sure any
provider selection passed from `buildApiHandler()` is used to choose the correct
source of truth.

timeout: this.timeoutMs,
})
}
Expand Down Expand Up @@ -352,9 +358,14 @@ export class AnthropicHandler extends BaseProvider implements SingleCompletionHa
}

getModel() {
const modelId = this.options.apiModelId
const id = modelId && modelId in anthropicModels ? (modelId as AnthropicModelId) : anthropicDefaultModelId
let info: ModelInfo = anthropicModels[id]
const customModelId = this.options.anthropicCustomModelId
const modelId = customModelId || this.options.apiModelId
const id =
customModelId ||
(modelId && modelId in anthropicModels ? (modelId as AnthropicModelId) : anthropicDefaultModelId)
let info: ModelInfo = customModelId
? this.options.anthropicCustomModelInfo || openAiModelInfoSaneDefaults
: anthropicModels[id as AnthropicModelId]
Comment on lines +361 to +368

@coderabbitai coderabbitai Bot Jun 28, 2026

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🎯 Functional Correctness | 🟠 Major | ⚡ Quick win

Fallback to built-in Anthropic metadata for known custom model IDs.

anthropicCustomModelInfo is optional, but this path drops straight to openAiModelInfoSaneDefaults whenever a custom model ID is set. For any saved/imported profile that picks a stock Claude model but lacks the hydrated anthropicCustomModelInfo, you'll silently lose the real context window, prompt-cache support, and pricing. Please seed from anthropicModels[customModelId] when the ID is known, then layer user overrides on top.

Suggested patch 
 		const customModelId = this.options.anthropicCustomModelId
 		const modelId = customModelId || this.options.apiModelId
 		const id =
 			customModelId ||
 			(modelId && modelId in anthropicModels ? (modelId as AnthropicModelId) : anthropicDefaultModelId)
-		let info: ModelInfo = customModelId
-			? this.options.anthropicCustomModelInfo || openAiModelInfoSaneDefaults
-			: anthropicModels[id as AnthropicModelId]
+		const builtInCustomInfo =
+			customModelId && customModelId in anthropicModels
+				? anthropicModels[customModelId as AnthropicModelId]
+				: undefined
+		let info: ModelInfo = customModelId
+			? {
+					...(builtInCustomInfo ?? openAiModelInfoSaneDefaults),
+					...(this.options.anthropicCustomModelInfo ?? {}),
+				}
+			: anthropicModels[id as AnthropicModelId]
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
const customModelId = this.options.anthropicCustomModelId
const modelId = customModelId || this.options.apiModelId
const id =
customModelId ||
(modelId && modelId in anthropicModels ? (modelId as AnthropicModelId) : anthropicDefaultModelId)
let info: ModelInfo = customModelId
? this.options.anthropicCustomModelInfo || openAiModelInfoSaneDefaults
: anthropicModels[id as AnthropicModelId]
const customModelId = this.options.anthropicCustomModelId
const modelId = customModelId || this.options.apiModelId
const id =
customModelId ||
(modelId && modelId in anthropicModels ? (modelId as AnthropicModelId) : anthropicDefaultModelId)
const builtInCustomInfo =
customModelId && customModelId in anthropicModels
? anthropicModels[customModelId as AnthropicModelId]
: undefined
let info: ModelInfo = customModelId
? {
...(builtInCustomInfo ?? openAiModelInfoSaneDefaults),
...(this.options.anthropicCustomModelInfo ?? {}),
}
: anthropicModels[id as AnthropicModelId]
🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@src/api/providers/anthropic.ts` around lines 361 - 368, The model metadata
fallback in the Anthropics provider is skipping built-in metadata whenever
anthropicCustomModelId is set, so saved profiles can lose the real Claude
defaults. Update the logic around the custom model path in this block to first
look up anthropicModels[customModelId] when the ID is a known Anthropic model,
then merge anthropicCustomModelInfo over that, and only use
openAiModelInfoSaneDefaults when no built-in metadata exists. Keep the change
localized to the custom model handling in the Anthropics provider where
modelId/id/info are computed.


// If 1M context beta is enabled for supported models, update the model info
if (
Expand Down
2 changes: 2 additions & 0 deletions src/shared/ProfileValidator.ts
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Expand Up @@ -53,6 +53,8 @@ export class ProfileValidator {
switch (profile.apiProvider) {
case "openai":
return profile.openAiModelId
case "anthropic-custom":
return profile.anthropicCustomModelId
case "anthropic":
case "openai-native":
case "bedrock":
Expand Down
11 changes: 11 additions & 0 deletions webview-ui/src/components/settings/ApiOptions.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ import {

import {
Anthropic,
AnthropicCustom,
Baseten,
Bedrock,
DeepSeek,
Expand Down Expand Up @@ -468,6 +469,16 @@ const ApiOptions = ({
/>
)}

{selectedProvider === "anthropic-custom" && (
<AnthropicCustom
apiConfiguration={apiConfiguration}
setApiConfigurationField={setApiConfigurationField}
organizationAllowList={organizationAllowList}
modelValidationError={modelValidationError}
simplifySettings={fromWelcomeView}
/>
)}

{selectedProvider === "openai-codex" && (
<OpenAICodex
apiConfiguration={apiConfiguration}
Expand Down
1 change: 1 addition & 0 deletions webview-ui/src/components/settings/ModelPicker.tsx
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Expand Up @@ -32,6 +32,7 @@ type ModelIdKey = keyof Pick<
| "requestyModelId"
| "unboundModelId"
| "openAiModelId"
| "anthropicCustomModelId"
| "litellmModelId"
| "vercelAiGatewayModelId"
| "opencodeGoModelId"
Expand Down
1 change: 1 addition & 0 deletions webview-ui/src/components/settings/constants.ts
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Expand Up @@ -43,6 +43,7 @@ export const MODELS_BY_PROVIDER: Partial<Record<ProviderName, Record<string, Mod
export const PROVIDERS = [
{ value: "openrouter", label: "OpenRouter", proxy: false },
{ value: "anthropic", label: "Anthropic", proxy: false },
{ value: "anthropic-custom", label: "Anthropic Custom", proxy: true },
{ value: "gemini", label: "Google Gemini", proxy: false },
{ value: "deepseek", label: "DeepSeek", proxy: false },
{ value: "moonshot", label: "Moonshot", proxy: false },
Expand Down
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