MCP JSONPlaceholder MCP Server

MCP JSONPlaceholder MCP server is a locally run integration for AI assistants that speak the Model Context Protocol. A modern Model Context Protocol (MCP) server built with FastMCP that provides access to the JSONPlaceholder API - a free fake REST API for testing and prototyping.

Setting it up

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

What the assistant can call

Once MCP JSONPlaceholder is connected, these are the calls the assistant has available:

• get_posts — Retrieve all posts or a specific post by ID
• get_users — Retrieve all users or a specific user by ID
• get_comments — Retrieve comments, optionally filtered by post ID
• get_albums — Retrieve albums, optionally filtered by user ID
• get_photos — Retrieve photos, optionally filtered by album ID
• get_todos — Retrieve todos, optionally filtered by user ID
• create_post — Create a new post (simulated)
• search_posts — Search posts by title or body content
• Prerequisites — The Prerequisites tool exposed by this server
• Installation — 1. Clone or download this project 2. The project is already configured with uv. Simply run: bash uv sync

Configuration and credentials

• Python 3.10+ - uv package manager

Before you rely on it

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• With 10 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch MCP JSONPlaceholder.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the mcp jsonplaceholder mcp server does with a few real requests.

Choosing this one

Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. MCP JSONPlaceholder's toolset — get_posts, get_users, get_comments and 7 more — is a fair guide to whether it matches your workflow. It is maintained by danielpdev; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.