Stdio transport
Use stdio when you’re running a local application, CLI tool, or development environment that spawns the MCP server as a child process. The client manages the server lifecycle — it startsnpx for you and communicates over standard input/output.
When to use: Claude Desktop, Cursor, local agent scripts, any MCP client that accepts a command + args config.
Set the PEEPS_API_KEY environment variable to authenticate. Here’s a generic stdio config:
your-api-key-here with your key from app.peeps.ai Settings → API Keys. The exact location of this config block depends on your client — consult its documentation for where to place MCP server definitions.
HTTP/SSE transport
Use HTTP/SSE when you’re running a cloud-hosted agent, a server-side application, or any client that connects to remote (rather than locally spawned) MCP servers. No local Node.js installation is required. When to use: cloud agents, hosted AI platforms, Claude.ai web, LangChain/agent frameworks, any client that accepts a remote server URL.
A generic HTTP/SSE config looks like this:
url, transport, headers) vary by client — check your tool’s MCP documentation for its specific schema.
LangChain and agent frameworks
If you’re building an agent with LangChain or a similar framework, you can connect to the peeps remote MCP server using thelangchain-mcp-adapters package. Install it with pip install langchain-mcp-adapters, then connect like this:
tools, pass them to your LangChain agent or chain as you would any other tool list. The peeps tools (search_people, get_person, search_organizations, get_organization, list_contacts) will be available for the agent to call automatically.
The Model Context Protocol specification lists all officially supported client implementations and transport options. If your tool is MCP-compatible and isn’t covered here, the stdio or HTTP/SSE configs above should work with minimal adaptation.
Guides for specific clients
Claude
Step-by-step setup for Claude Desktop and Claude.ai, including config file locations and example prompts.
Cursor
Add peeps to Cursor for AI-powered people search right inside your code editor.