Not able to connect whisper service

[a411633308]

What happened?

I would like to integrate a whisper MCP service in v0.7.9 through streamable-http.
This base url works when I use command line curl to call the service. like following

 curl -X POST "https://whisper.rz.***************/asr?task=transcribe&vad_filter=true&output=txt"   -F "audio_file=@Interview_PersonA-PP_v3.mp3"

It throws right transcribtion properly.

Version Information

root@chat-ai-dev:/opt/LibreChat# docker images | grep librechat
ghcr.io/danny-avila/librechat-dev                latest      ce3b00be875a   4 days ago      1.13GB
ghcr.io/danny-avila/librechat-api                latest      2c0065bd448a   6 days ago      1.21GB

Steps to Reproduce

1. whisper-asr-webservice has been used to build my remote whisper service.
   2.Corresponding setting in librechat.yaml:

mcpServers:
  whisper-remote:
    type: streamable-http
    url: https://whisper.rz.***********/asr
    initTimeout: 15000
    serverInstructions: |
      Please select an audio file to upload and the system will automatically transcribe it using the remote Whisper.

3. rebuild the docker images through

docker-compose down && docker-compose -f deploy-compose.yml build --no-cache && docker-compose -f deploy-compose.yml up -d

What browsers are you seeing the problem on?

No response

Relevant log output

LibreChat-API logs

2025-07-30 08:34:57 error: [MCP][whisper-remote] Transport error: Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:34:57 info: [MCP][whisper-remote] Streamable-http transport closed
2025-07-30 08:34:57 error: [MCP][whisper-remote] Connection failed: Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:34:59 info: [MCP][whisper-remote] Creating streamable-http transport: https://whisper.rz.**********/asr
2025-07-30 08:34:59 error: [MCP][whisper-remote] Transport error: Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:34:59 info: [MCP][whisper-remote] Streamable-http transport closed
2025-07-30 08:34:59 error: [MCP][whisper-remote] Connection failed: Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:35:03 info: [MCP][whisper-remote] Creating streamable-http transport: https://whisper.rz.**********/asr
2025-07-30 08:35:03 error: [MCP][whisper-remote] Transport error: Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:35:03 info: [MCP][whisper-remote] Streamable-http transport closed
2025-07-30 08:35:03 error: [MCP][whisper-remote] Connection failed: Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:35:03 error: [MCP][whisper-remote] Failed to connect after 3 attempts Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:35:03 error: [MCP][whisper-remote] Initialization failed Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:35:03 error: [MCP][whisper-remote] Initialization failed Error POSTing to endpoint (HTTP 422): {"detail":[{"loc":["body","audio_file"],"msg":"field required","type":"value_error.missing"}]}
2025-07-30 08:35:03 info: [MCP] Initialized 0/1 app-level server(s)
2025-07-30 08:35:03 info: [MCP][whisper-remote] ✗ Failed
2025-07-30 08:35:03 warn: [MCP] No app-level servers initialized

Screenshots

No response

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