From 0a9641a110aaad4c6a6d193e7f2977d98e954779 Mon Sep 17 00:00:00 2001
From: ItzCrazyKns <95534749+ItzCrazyKns@users.noreply.github.com>
Date: Wed, 24 Dec 2025 15:24:06 +0530
Subject: [PATCH] feat(providers): add anthropic

---
 .../providers/anthropic/anthropicLLM.ts       |   5 +
 src/lib/models/providers/anthropic/index.ts   | 115 ++++++++++++++++++
 src/lib/models/providers/index.ts             |   4 +-
 src/lib/models/providers/lemonade/index.ts    |   3 -
 4 files changed, 123 insertions(+), 4 deletions(-)
 create mode 100644 src/lib/models/providers/anthropic/anthropicLLM.ts
 create mode 100644 src/lib/models/providers/anthropic/index.ts

diff --git a/src/lib/models/providers/anthropic/anthropicLLM.ts b/src/lib/models/providers/anthropic/anthropicLLM.ts
new file mode 100644
index 0000000..9d660d6
--- /dev/null
+++ b/src/lib/models/providers/anthropic/anthropicLLM.ts
@@ -0,0 +1,5 @@
+import OpenAILLM from "../openai/openaiLLM";
+
+class AnthropicLLM extends OpenAILLM {}
+
+export default AnthropicLLM;
\ No newline at end of file
diff --git a/src/lib/models/providers/anthropic/index.ts b/src/lib/models/providers/anthropic/index.ts
new file mode 100644
index 0000000..2278ca2
--- /dev/null
+++ b/src/lib/models/providers/anthropic/index.ts
@@ -0,0 +1,115 @@
+import { UIConfigField } from '@/lib/config/types';
+import { getConfiguredModelProviderById } from '@/lib/config/serverRegistry';
+import { Model, ModelList, ProviderMetadata } from '../../types';
+import BaseEmbedding from '../../base/embedding';
+import BaseModelProvider from '../../base/provider';
+import BaseLLM from '../../base/llm';
+import AnthropicLLM from './anthropicLLM';
+
+interface AnthropicConfig {
+  apiKey: string;
+}
+
+const providerConfigFields: UIConfigField[] = [
+  {
+    type: 'password',
+    name: 'API Key',
+    key: 'apiKey',
+    description: 'Your Anthropic API key',
+    required: true,
+    placeholder: 'Anthropic API Key',
+    env: 'ANTHROPIC_API_KEY',
+    scope: 'server',
+  },
+];
+
+class AnthropicProvider extends BaseModelProvider<AnthropicConfig> {
+  constructor(id: string, name: string, config: AnthropicConfig) {
+    super(id, name, config);
+  }
+
+  async getDefaultModels(): Promise<ModelList> {
+    const res = await fetch('https://api.anthropic.com/v1/models?limit=999', {
+      method: 'GET',
+      headers: {
+        'x-api-key': this.config.apiKey,
+        'anthropic-version': '2023-06-01',
+        'Content-type': 'application/json',
+      },
+    });
+
+    if (!res.ok) {
+      throw new Error(`Failed to fetch Anthropic models: ${res.statusText}`);
+    }
+
+    const data = (await res.json()).data;
+
+    const models: Model[] = data.map((m: any) => {
+      return {
+        key: m.id,
+        name: m.display_name,
+      };
+    });
+
+    return {
+      embedding: [],
+      chat: models,
+    };
+  }
+
+  async getModelList(): Promise<ModelList> {
+    const defaultModels = await this.getDefaultModels();
+    const configProvider = getConfiguredModelProviderById(this.id)!;
+
+    return {
+      embedding: [],
+      chat: [...defaultModels.chat, ...configProvider.chatModels],
+    };
+  }
+
+  async loadChatModel(key: string): Promise<BaseLLM<any>> {
+    const modelList = await this.getModelList();
+
+    const exists = modelList.chat.find((m) => m.key === key);
+
+    if (!exists) {
+      throw new Error(
+        'Error Loading Anthropic Chat Model. Invalid Model Selected',
+      );
+    }
+
+    return new AnthropicLLM({
+      apiKey: this.config.apiKey,
+      model: key,
+      baseURL: 'https://api.anthropic.com/v1'
+    });
+  }
+
+  async loadEmbeddingModel(key: string): Promise<BaseEmbedding<any>> {
+    throw new Error('Anthropic provider does not support embedding models.');
+  }
+
+  static parseAndValidate(raw: any): AnthropicConfig {
+    if (!raw || typeof raw !== 'object')
+      throw new Error('Invalid config provided. Expected object');
+    if (!raw.apiKey)
+      throw new Error('Invalid config provided. API key must be provided');
+
+    return {
+      apiKey: String(raw.apiKey),
+    };
+  }
+
+  static getProviderConfigFields(): UIConfigField[] {
+    return providerConfigFields;
+  }
+
+  static getProviderMetadata(): ProviderMetadata {
+    return {
+      key: 'anthropic',
+      name: 'Anthropic',
+    };
+  }
+}
+
+export default AnthropicProvider;
\ No newline at end of file
diff --git a/src/lib/models/providers/index.ts b/src/lib/models/providers/index.ts
index b3dc550..c53cb71 100644
--- a/src/lib/models/providers/index.ts
+++ b/src/lib/models/providers/index.ts
@@ -6,6 +6,7 @@ import GeminiProvider from './gemini';
 import TransformersProvider from './transformers';
 import GroqProvider from './groq';
 import LemonadeProvider from './lemonade';
+import AnthropicProvider from './anthropic';
 
 export const providers: Record<string, ProviderConstructor<any>> = {
   openai: OpenAIProvider,
@@ -13,7 +14,8 @@ export const providers: Record<string, ProviderConstructor<any>> = {
   gemini: GeminiProvider,
   transformers: TransformersProvider,
   groq: GroqProvider,
-  lemonade: LemonadeProvider
+  lemonade: LemonadeProvider,
+  anthropic: AnthropicProvider
 };
 
 export const getModelProvidersUIConfigSection =
diff --git a/src/lib/models/providers/lemonade/index.ts b/src/lib/models/providers/lemonade/index.ts
index 582363a..12f5391 100644
--- a/src/lib/models/providers/lemonade/index.ts
+++ b/src/lib/models/providers/lemonade/index.ts
@@ -1,6 +1,3 @@
-import { BaseChatModel } from '@langchain/core/language_models/chat_models';
-import { ChatOpenAI, OpenAIEmbeddings } from '@langchain/openai';
-import { Embeddings } from '@langchain/core/embeddings';
 import { UIConfigField } from '@/lib/config/types';
 import { getConfiguredModelProviderById } from '@/lib/config/serverRegistry';
 import BaseModelProvider from '../../base/provider';