[Feat] - MCP improvements, add support for using SSE MCP servers

[ishaan-jaff]

[Feat] - MCP improvements, add support for using SSE MCP servers

Allow onboarding MCP SSE Servers onto litellm proxy like this

model_list:
  - model_name: gpt-4o
    litellm_params:
      model: openai/gpt-4o

mcp_servers:
  {
    "Zapier_MCP": {
      "url": "https://actions.zapier.com/mcp/sk-ak-2ew3bofIeQIkNoeKIdXrF1Hhhp/sse",
      "mcp_info": {
        "logo_url": "https://espysys.com/wp-content/uploads/2024/08/zapier-logo.webp",
      }
    }, {
      "fetch": {
        "url": "https://localhost:8000/sse",
      }
    }
  }

Relevant issues

Pre-Submission checklist

Please complete all items before asking a LiteLLM maintainer to review your PR

• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement - see details
• I have added a screenshot of my new test passing locally
• My PR passes all unit tests on (make test-unit)[https://docs.litellm.ai/docs/extras/contributing_code]
• My PR's scope is as isolated as possible, it only solves 1 specific problem

Type

🆕 New Feature
✅ Test

Changes

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Name	Status	Preview	Comments	Updated (UTC)
litellm	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 30, 2025 1:41am

[wagnerjt]

👏