index.ts•2.22 kB
import Anthropic from "@anthropic-ai/sdk";
import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { CallToolRequestSchema, ListToolsRequestSchema } from "@modelcontextprotocol/sdk/types.js";
const log = (message: string) => {
console.error(`[DEBUG] ${message}`);
};
const client = new Anthropic({
apiKey: process.env.ANTHROPIC_API_KEY
});
const server = new Server(
{
name: "claude-api",
version: "1.0.0",
},
{
capabilities: {
tools: {}
}
}
);
server.setRequestHandler(ListToolsRequestSchema, async () => {
log("Listing tools...");
return {
tools: [
{
name: "send-message",
description: "Send a message to Claude",
inputSchema: {
type: "object",
properties: {
message: {
type: "string",
description: "Message to send to Claude"
}
},
required: ["message"]
}
}
]
};
});
server.setRequestHandler(CallToolRequestSchema, async (request) => {
log(`Executing tool: ${request.params.name}`);
if (request.params.name === "send-message" && request.params.arguments?.message) {
try {
const msg = await client.messages.create({
model: "claude-3-opus-20240229",
max_tokens: 1024,
messages: [
{
role: "user",
content: String(request.params.arguments.message)
}
]
});
const responseText = msg.content[0].type === 'text' ? msg.content[0].text : 'No text response available';
return {
content: [
{
type: "text",
text: responseText
}
]
};
} catch (error) {
log(`Error calling Claude API: ${error}`);
throw error;
}
}
throw new Error(`Unknown tool: ${request.params.name}`);
});
async function main() {
try {
log("Starting server...");
const transport = new StdioServerTransport();
await server.connect(transport);
log("Server running");
} catch (error) {
log(`Server error: ${error}`);
process.exit(1);
}
}
main();