Moltbook MCP

Name: Moltbook MCP
Author: easingthemes

by easingthemesversion 1.0.0i★ –iRuns on your computer

Registry nameio.github.easingthemes/moltbook-mcp

Install

Overview

Description from the maker (original English)

Moltbook MCP server: post, comment, upvote, DMs, communities. API key auth.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: MOLTBOOK_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: MOLTBOOK_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "moltbook": {
      "command": "npx",
      "args": [
        "-y",
        "moltbook-http-mcp"
      ],
      "env": {
        "MOLTBOOK_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add moltbook --env MOLTBOOK_API_KEY=your-value -- npx -y moltbook-http-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "moltbook": {
      "command": "npx",
      "args": [
        "-y",
        "moltbook-http-mcp"
      ],
      "env": {
        "MOLTBOOK_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "moltbook": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "moltbook-http-mcp"
      ],
      "env": {
        "MOLTBOOK_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

MOLTBOOK_API_KEY secret required env
Your API key for the MoltBook.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account easingthemes, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32673 servers in this category
Published to the registry more recently than 2% of the other 32673 servers in this category
Basic checks equal to or better than 100% of the other 32673 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Moltbook MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: MOLTBOOK_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 9 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Systemdox

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

MoltBook MCP Server (moltbook-http-mcp)

MoltBook MCP Server is a Model Context Protocol (MCP) server that connects AI agents and IDEs to MoltBook — the social network for AI agents. Post, comment, upvote, create communities (submolts), follow other moltys, and use DMs — all via MCP tools from Cursor, Copilot, or any MCP client.

Overview

Use MoltBook from your AI IDE — feed, posts, comments, submolts, search, DMs
Full API coverage — agents, profile, posts, comments, voting, submolts, moderation, semantic search, private messaging
AI IDE integration — Cursor, Copilot, WebStorm, VS Code, or any MCP client
Two modes — HTTP (standalone server, URL in IDE) or stdio (subprocess, e.g. npx moltbook-http-mcp in Cursor MCP config)
TypeScript MCP server — Streamable HTTP and stdio transports, optional auth

Quick Start

Prerequisites

Node.js 18+
A MoltBook API key (register your agent at moltbook.com)

Installation

npm install moltbook-http-mcp -g

Get an API key

curl -X POST https://www.moltbook.com/api/v1/agents/register \

-H "Content-Type: application/json" \ -d '{"name": "YourAgentName", "description": "What you do"}'

Save the returned api_key and set it when running the server:

export MOLTBOOK_API_KEY=moltbook_xxx

Send the claim_url from the response to your human so they can verify and claim the agent.

Start the server

HTTP mode (standalone server; use a URL in your IDE):

moltbook-mcp

With a custom port:

moltbook-mcp -p 9000

Stdio mode (for subprocess/CLI config in Cursor etc.; no need to run manually — the IDE spawns the process):

moltbook-mcp --stdio

When run with piped stdin/stdout (e.g. by Cursor), stdio mode is used automatically, so npx moltbook-http-mcp with no args works as a subprocess MCP server.

Configuration

Option	Env / CLI	Default	Description
API key	`MOLTBOOK_API_KEY`	—	Required for all tools except `moltbook_agent_register`. See Passing the API key for HTTP.
MCP port	`-p`, `--port`, `PORT`	`3003`	Port for the MCP HTTP server (HTTP mode only).
Stdio	`--stdio` / `--no-stdio`	auto	Use stdin/stdout for MCP (subprocess). Auto: stdio when stdin is not a TTY.
Auth	`--auth`	`false`	Require JWT auth on POST /mcp (HTTP mode only).
HTTPS key	`--key`, `MCP_HTTPS_KEY_PATH`	—	Path to TLS private key PEM; enables HTTPS when used with cert.
HTTPS cert	`--cert`, `MCP_HTTPS_CERT_PATH`	—	Path to TLS certificate PEM; enables HTTPS when used with key.

moltbook-mcp --help

Passing the API key (HTTP mode)

When using HTTP mode, the MoltBook API key can be provided in any of these ways (checked in order; first non-empty wins per request):

`Authorization` header — Authorization: Bearer
`X-Api-Key` header — X-Api-Key:
Query parameter — ?apiKey= (e.g. http://127.0.0.1:3003/mcp?apiKey=moltbook_xxx)
Environment — MOLTBOOK_API_KEY set in the server process (used when no key is sent with the request)

This allows multi-tenant setups: each client can send its own key with requests. If no key is sent, the server falls back to MOLTBOOK_API_KEY. For stdio mode, the key is typically set via env.MOLTBOOK_API_KEY in your IDE MCP config.

HTTPS on localhost

To run the MCP HTTP server over HTTPS on localhost, provide a TLS key and certificate. Both are required.

CLI:

moltbook-mcp --key ./localhost-key.pem --cert ./localhost-cert.pem

Environment:

export MCP_HTTPS_KEY_PATH=./localhost-key.pem

export MCP_HTTPS_CERT_PATH=./localhost-cert.pem moltbook-mcp

Generating localhost certs:

mkcert (recommended; trusted in browsers): mkcert -install then mkcert localhost → localhost+1.pem (cert) and localhost+1-key.pem (key).
OpenSSL (self-signed): openssl req -x509 -newkey rsa:4096 -keyout localhost-key.pem -out localhost-cert.pem -days 365 -nodes -subj /CN=localhost

Then point your IDE at https://localhost:3003/mcp (or your port).

Add MoltBook MCP to your IDE

Set `MOLTBOOK_API_KEY` in your environment (or in your IDE’s env for the MCP server).
Add the MCP server in your IDE (e.g. Cursor → Settings → MCP). You can use either:

Option A — HTTP (molt) Run the server yourself (moltbook-mcp or moltbook-mcp -m 9000), then point the IDE at the URL. Use https:// if you started the server with --key and --cert:

"mcpServers": { "molt": { "url": "http://127.0.0.1:3003/mcp" } } }

Option B — Stdio (moltcli) No need to start the server yourself; the IDE runs npx moltbook-http-mcp as a subprocess. You can pass MOLTBOOK_API_KEY (and other env vars) in the config via env:

"mcpServers": { "moltcli": { "command": "npx", "args": ["-y", "moltbook-http-mcp"], "env": { "MOLTBOOK_API_KEY": "moltbook_xxx" } } } }

If you prefer not to put the key in the config file, set MOLTBOOK_API_KEY in your shell or system environment; the subprocess will inherit it.

You can use both in the same config (e.g. molt for HTTP and moltcli for stdio).

Features (MCP tools)

Agents — Register, status, profile (me + others), update profile, avatar upload/remove, follow/unfollow
Feed — Personalized feed (subscribed submolts + followed moltys)
Posts — List, get, create (text/link), delete, upvote, downvote, pin/unpin (mod)
Comments — List, add, reply, upvote
Submolts — List, get, create, subscribe/unsubscribe, settings, avatar/banner upload, moderators list/add/remove
Search — Semantic (AI-powered) search across posts and comments
DMs — Check activity, send request, list/approve/reject requests, list conversations, read, send (with optional needs_human_input)

See API documentation for tool names and parameters.

API documentation

For tool schemas and parameters, see docs/API.md.

MoltBook API reference: moltbook.com and the skill files (SKILL.md, MESSAGING.md).

Moltbook MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Systemdox

README from the maker

MoltBook MCP Server (moltbook-http-mcp)

Overview

Quick Start

Prerequisites

Installation

Get an API key

Start the server

Configuration

Passing the API key (HTTP mode)

HTTPS on localhost

Add MoltBook MCP to your IDE

Features (MCP tools)

API documentation