Configuring Anthropic models from Bedrock using custom endpoint

[keepthegoal]

Hi everyone,
I'm trying to simulate request to Anthropic models from Bedrock via enterprise proxy wuth custom endpoint:
Working with librechat:0.7.9 image

headers = {"Content-Type": "application/json", "Authorization": "Bearer someApiKey"}
url = "https://bedrock-gateway-beta.apps.ai-dev.abc.cloud/invoke"
payload = {"messages": [{"role": "user", "content": "Hello, world"}l,
"max_tokens": 1024,
"anthropic_version": "bedrock-2023-05-31"
"model_id": "us-anthropic.claude-3-7-sonnet-20258219-v1:0"
}

Unfortunately, I can not use pre configured provider as described here:
https://www.librechat.ai/docs/configuration/pre_configured_ai/bedrock
So the only option is using custom endpoint

Here's my custom endpoint which I try to set up:

name: "AWS Bedrock Models' 
iconURL: "anthropic"
apiKey: "${AI_BEDROCK_GATEWAY_KEY}"
baseURL: 'https://bedrock-gateway-beta.apps.ai-dev.abc.cloud/invoke' 
models:
   default:
      "us-anthropic.claude-3-7-sonnet-20250219-v1:0"
      "us-anthropic.claude-3-5-sonnet-20241822-v2:0"
fetch: false 
titleConvo: true 
titleModel: 'title-endpoint' 
directEndpoint: true 
addParams:
    max_tokens: 2048
    anthropic_version: "bedrock-2023-05-31"
    model_id: "us.anthropic.claude-3-7-sonnet-20250219-v1:0" 
dropParams:
 - "model"
 - "stream" 
headers:
   X-AI-USAGE-TRACKING-USER: "email={{LIBRECHAT_USER_EMAIL}}"

With this configutation, I see the following url in request:
https://bedrock-gateway-beta.apps.ai-dev.abc.cloud/invoke/chat/completions

And getting 404 error with this link:
https://js.langchain.com/docs/troubleshooting/errors/MODEL_NOT_FOUND/