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Refunc MCP Server

@refunc

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作者

refunc

Refunc MCP Server について

Refunc Model Context Protocol Server

Refunc MCP Server の設定

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このサーバーの README には解析可能な MCP 設定ブロックが含まれていません。インストール手順はリポジトリをご確認ください。

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Refunc MCP Server のツール

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ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。

概要

What is Refunc MCP Server?

The Refunc MCP Server integrates Refunc serverless functions as tools in the Model Context Protocol (MCP), allowing you to expose functions as MCP endpoints via Server-Sent Events (SSE). It is designed for developers who want to create MCP-compatible tools from existing Refunc functions deployed on Kubernetes.

How to use Refunc MCP Server?

Deploy the Refunc components on Kubernetes using kubectl apply, then proxy the services locally. Install the refunc-cli and initialize a function with rfctl init. Edit the generated lambda.yaml to add an MCP event specification with a token and tool definitions. Finally, update the configuration with rfctl update-config and access the MCP SSE endpoint at the provided URL path.

Key features of Refunc MCP Server

  • Deployable on Kubernetes with a single manifest file.
  • Uses refunc-cli to create and manage functions.
  • MCP event spec supports multiple tools per function.
  • SSE endpoint follows a predictable URL format.
  • Tools can be described inline with JSON Schema parameters.

Use cases of Refunc MCP Server

  • Expose a serverless function as an MCP-compatible tool.
  • Build a demo echo tool for testing MCP integrations.
  • Create multiple MCP tools from a single function using the _call_method parameter.

よくある質問

1

How do I deploy the Refunc MCP Server?

Apply the Kubernetes manifest from the repository and port-forward the two services (`aws-api` and `mcp-server`) to local ports 8000 and 8001 respectively.

2

What is the format of the MCP SSE endpoint?

The URL path format is `/namespace/<token-secret-name>/<token>/<func-name>/sse`. For the demo, it is `http://127.0.0.1:8001/refunc-system/mcp-demo/test/mcp-demo/sse`.

3

What are the requirements for creating a function?

You need Python 3, the `refunc-cli` package installed via pip, and a Kubernetes cluster with the Refunc components deployed.

4

Is data persistent in the demo deployment?

No, the data from the demo deployment is not persistent.

5

How do I add multiple tools to a single function?

Define multiple entries under the `tools` array in the MCP event specification. Each tool requires a name, description, and JSON Schema for parameters. The function receives a `_call_method` parameter to identify which tool was invoked.

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