Description

franciscojavierarceo

opened on May 30, 2025

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Is your feature request related to a problem? Please describe.
Feast uses FastAPI for its feature server.

We can use https://github.com/tadata-org/fastapi_mcp to expose Feast as an MCP Server.

Describe the solution you'd like
This should be optional based on the feature store yaml and default to false.

Describe alternatives you've considered
N/A

Additional context
Add any other context or screenshots about the feature request here.

Reacted by Nikhil Kathole

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1. franciscojavierarceo

   added

   kind/featureNew feature or requestNew feature or request

   on May 30, 2025
2. YassinNouh21 commented on May 31, 2025

   

   YassinNouh21

   on May 31, 2025

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   Hi @franciscojavierarceo ! I'd like to implement MCP support for Feast as requested. Here's my proposed approach:

   Implementation Overview:

   • Add optional MCP server support using fastapi_mcp library
   • Configuration-driven via feature_store.yaml with mcp_enabled: false as default
   • Non-breaking changes with graceful degradation when fastapi_mcp is not installed

   MCP Tools Exposed:

   • get_online_features - retrieve features for entities
   • list_feature_views - enumerate available feature views
   • list_feature_services - enumerate available feature services
   • get_feature_store_info - basic store metadata

   Configuration Example:

   feature_server:
     type: mcp
     mcp_enabled: true  # defaults to false
     mcp_server_name: "feast-mcp-server"
     mcp_server_version: "1.0.0"

   This follows Feast's existing patterns for feature server configuration and maintains full backward compatibility. Would you like me to proceed with creating a PR?

   Reacted by Francisco Javier Arceo
3. franciscojavierarceo commented on May 31, 2025

   

   franciscojavierarceo

   on May 31, 2025

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   That'd be awesome!
4. YassinNouh21 commented on May 31, 2025

   

   YassinNouh21

   on May 31, 2025

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   PR is ready can u take a look @franciscojavierarceo
5. redhatHameed commented on May 31, 2025

   

   redhatHameed

   on May 31, 2025

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   @franciscojavierarceo @YassinNouh21

   Feast has three remote server configurations (online, offline, and registry), each with its own implementation. The question is: what functions does the MCP server expose? will be different server for each implementation or single server or just implementing online feature server ?

   Im not very familiar with the MCP server yet and haven't looked at the PR, so please ignore the question is not relevant
6. franciscojavierarceo commented on May 31, 2025

   

   franciscojavierarceo

   on May 31, 2025

   MemberAuthor

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   Good question @redhatHameed! I should have been more explicit to limit it to the online feature server, though some of that does allow for retrieval of data from the offline store.
7. YassinNouh21 commented on May 31, 2025

   

   YassinNouh21

   on May 31, 2025

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   @redhatHameed
   "Will it be different servers or single server or just online feature server?"
   Single server: MCP enhances the online feature server only
   Not separate servers: It's the same FastAPI application with MCP capabilities added
   Online-focused: Currently only applies to online feature serving, not offline or registry operations
   So MCP gives you all the standard online feature server functionality PLUS the ability for AI agents to interact with it through the Model Context Protocol.
8. franciscojavierarceo

   closed this as completedin #5406on Jun 4, 2025

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