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README.md

VoltAgent MCP Elicitation Example

This example shows how to handle MCP elicitation/create requests from a VoltAgent MCP server while running a VoltAgent generateText call.

Prerequisites

  • Node.js 18+
  • OpenAI API key

Setup

pnpm install

Copy the example environment file and add your API key:

cp .env.example .env

Edit .env:

OPENAI_API_KEY=your_openai_api_key_here

Run

pnpm dev

From the repo root you can also run:

pnpm --filter voltagent-example-with-mcp-elicitation dev

Optional: Go HTTP MCP Server

Requires Go 1.23+ (the Go MCP SDK requires Go 1.23).

Start the Go server:

cd examples/with-mcp-elicitation/go-server
go run .

Then run the VoltAgent example pointing at it:

MCP_SERVER_URL=http://localhost:3142/mcp pnpm dev

The Go server exposes the customer_delete tool and intentionally sends an empty elicitation message with a schema description so you can verify the client-side fallback.

What It Does

  • Starts a VoltAgent MCP server on http://localhost:3142/mcp/mcp-elicitation-example/mcp.
  • Registers a customer_delete tool that requests user confirmation via elicitation/create.
  • Runs a VoltAgent generateText call with an elicitation handler that accepts the request and returns { confirm: true }.

The console output will show the full elicitation request payload and the final agent response.