Chat33

Name: Chat33
Author: chat33-io

by chat33-ioversion 1.0.0i★ –iRuns in the cloud

Registry nameio.chat33/chat33

Install

Overview

Description from the maker (original English)

Publish to 8 social networks, answer Instagram and Facebook DMs, build comment-to-DM flows.

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 in the cloud
Transport: Streamable HTTP
Category: Marketing & social media

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://chat33.io/api/mcp/mcp

Run this in your terminal

claude mcp add --transport http chat33 https://chat33.io/api/mcp/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "chat33": {
      "url": "https://chat33.io/api/mcp/mcp"
    }
  }
}

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": {
    "chat33": {
      "type": "http",
      "url": "https://chat33.io/api/mcp/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://chat33.io/api/mcp/mcp

Menu names can differ slightly by plan and over time.

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

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

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain chat33.io (the registry checks domain ownership)
… 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Marketing & social mediai

More stars than 0% of the other 2954 servers in this category
Published to the registry more recently than 80% of the other 2954 servers in this category
Basic checks equal to or better than 100% of the other 2954 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 Chat33 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 8 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: MCP YouTube Transcript, Google Analytics MCP, BibiGPT YouTube Video Summarizer

Alternatives

Servers in the same category from other makers, sorted by stars.

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

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BibiGPT YouTube Video Summarizer

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AI video summarizer: summarize and transcribe YouTube, Bilibili, TikTok and podcast videos.

Runs in the cloud★ 137MITUpdated 9 days ago

Install

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.

Chat33 MCP Server

Social media MCP server for AI agents. Connect Claude, ChatGPT, Cursor, VS Code or any MCP client to Chat33 and let your agent publish and schedule posts to Instagram, Facebook, Threads, TikTok, YouTube, X, LinkedIn and Bluesky, answer Instagram and Facebook DMs and comments, and build comment-to-DM automations.

This is a hosted (remote) server. There is nothing to install or run: point your client at the URL below and sign in.

https://chat33.io/api/mcp/mcp

Transport: Streamable HTTP
Auth: OAuth 2.1 sign-in in the browser (dynamic client registration), or an API key header
Docs: chat33.io/mcp

Connect your client

Prefer OAuth wherever your client supports it: add the server, choose Authenticate (or the client's login button) and approve in the browser tab that opens. No API key needed.

Claude Code

claude mcp add --transport http --scope user chat33 https://chat33.io/api/mcp/mcp

Then run /mcp, choose chat33 → Authenticate and approve in the browser.

Claude (claude.ai and Claude Desktop)

Settings → Connectors → Add custom connector → URL https://chat33.io/api/mcp/mcp → Connect, then approve in the browser.

ChatGPT

Settings → Apps / Connectors → Advanced → turn on Developer mode → Create: name Chat33, URL https://chat33.io/api/mcp/mcp, authentication OAuth. Sign in to Chat33 and click Allow.

Cursor

~/.cursor/mcp.json:

"mcpServers": { "chat33": { "url": "https://chat33.io/api/mcp/mcp" } } }

VS Code

.vscode/mcp.json in your workspace (or the user MCP config):

"servers": { "chat33": { "type": "http", "url": "https://chat33.io/api/mcp/mcp" } } }

Windsurf

~/.codeium/windsurf/mcp_config.json:

"mcpServers": { "chat33": { "serverUrl": "https://chat33.io/api/mcp/mcp" } } }

Codex

codex mcp add chat33 --url https://chat33.io/api/mcp/mcp

codex mcp login chat33

Gemini CLI

gemini extensions install https://github.com/chat33-io/chat33-mcp

Clients without OAuth (API key)

Create a key in Chat33 → Settings → API Keys and send it as an x-api-key header (or Authorization: Bearer):

"mcpServers": { "chat33": { "url": "https://chat33.io/api/mcp/mcp", "headers": { "x-api-key": "sk_live_..." } } } }

Tools

Group	Tools
Account	`list_accounts`, `whoami`
Publishing	`create_post`, `validate_post`, `list_posts`, `get_post`, `delete_post`, `get_post_logs`, `request_approval`, `list_approvals`, `add_post_note`
Media	`upload_media`, `create_upload_url`
Analytics	`get_analytics`
Automations	`list_flows`, `get_flow`, `create_flow`, `set_flow_status`
Inbox	`list_conversations`, `get_messages`, `reply_to_conversation`
Comments	`list_post_comments`, `reply_to_comment`

Tools that message a real person (reply_to_conversation, reply_to_comment) tell the agent to ask for your approval first. New automations are created as drafts.

Try asking

"Schedule this photo to Instagram and Threads for tomorrow at 9am."
"Which DMs are waiting for a reply? Draft answers for me to approve."
"Build a flow that DMs the guide link to anyone who comments GUIDE on my last reel."
"How did my posts do this week?"

Limits

Your Chat33 plan's limits on posts and connected accounts apply.
Instagram and Facebook DM replies only work within 24 hours of the contact's last message.
Meta allows one private reply per comment, within 7 days.
LinkedIn: personal profiles only. Bluesky: publishing only (no DMs or comments).

License

MIT. This repository describes the hosted server; the server itself runs at chat33.io.

Chat33

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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 Marketing & social mediai

Common questions

Alternatives

MCP YouTube Transcript

Google Analytics MCP

BibiGPT YouTube Video Summarizer

README from the maker

Chat33 MCP Server

Connect your client

Claude Code

Claude (claude.ai and Claude Desktop)

ChatGPT

Cursor

VS Code

Windsurf

Codex

Gemini CLI

Clients without OAuth (API key)

Tools

Try asking

Limits

Links

License