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@prompt-template/mcp

v0.6.0

Published

Model Context Protocol @prompt-template adapter

Readme

@prompt-template/mcp

@prompt-template/mcp provides an adapter for integrating @prompt-template/core with the Model Context Protocol Prompts API.

Installation

npm i @prompt-template/core @prompt-template/mcp

Usage

import { PromptTemplate } from '@prompt-template/core'
import { addPrompt } from '@prompt-template/mcp'
import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'

const mcpServer = new McpServer()

const promptTemplate = PromptTemplate.create`
  Brainstorm 3 names for a superhero ${'animal'}.
`

addPrompt(mcpServer, 'brainstorm-superhero-names', promptTemplate)

API

addPrompt

A function that adds a PromptTemplate instance to an MCP server.

import { PromptTemplate } from '@prompt-template/core'
import { addPrompt } from '@prompt-template/mcp'
import { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'

const mcpServer = new McpServer()

const promptTemplate = PromptTemplate`
  Brainstorm 3 names for a superhero ${'animal'}.
`

addPrompt(mcpServer, 'brainstorm-superhero-names', promptTemplate)

ChatPromptTemplate

A class for creating chat-based prompt templates.

import { ChatPromptTemplate } from '@prompt-template/mcp'

const chatPromptTemplate = ChatPromptTemplate.from([
  {
    role: 'user',
    content: {
      type: 'text',
      text: 'You are a helpful assistant.',
    },
  },
  {
    role: 'user',
    content: {
      type: 'text',
      promptTemplate: PromptTemplate.create`
        Brainstorm 3 names for a superhero ${'animal'}.
      `,
    },
  },
])

const messages = chatPromptTemplate.format({
  animal: 'cat',
})
//=> [
//     {
//       role: 'user',
//       content: {
//         type: 'text',
//         text: 'You are a helpful assistant.',
//       },
//     },
//     {
//       role: 'user',
//       content: {
//         type: 'text',
//         text: 'Brainstorm 3 names for a superhero cat.',
//       },
//     },
//   ]

toPrompt

A function that converts a PromptTemplate instance into a format that the low-level server.setRequestHandler(ListPromptsRequestSchema, callback) expects.

import { PromptTemplate } from '@prompt-template/core'
import { toPrompt } from '@prompt-template/mcp'

const promptTemplate = PromptTemplate.create({
  description: 'Brainstorm superhero names for an animal.',
})`
  Brainstorm 3 names for a superhero ${{
    name: 'animal',
    description: 'The animal to name the superhero after.',
  }}.
`

const prompt = toPrompt('brainstorm-superhero-names', promptTemplate)
//=> {
//     name: 'brainstorm-superhero-names',
//     description: 'Brainstorm superhero names for an animal.',
//     arguments: [
//       {
//         name: 'animal',
//         description: 'The animal to name the superhero after.',
//         required: true,
//       },
//     ],
//   }