FlipLetters

Name: FlipLetters
Author: Terahertz-Inc

by Terahertz-Incversion 0.3.1i★ –iComputer or cloud

Registry namecom.flipletters/mcp

Install

Overview

Description from the maker (original English)

Draft, validate, render, and share split-flap and flip-dot board videos written in flipcode.

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: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Other
You need to fill in: FLIPLETTERS_API_KEY, Authorization

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.
You fill in yourself: FLIPLETTERS_API_KEY, Authorization

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

You need

Runs in the cloudNothing to install; it connects over the internet
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 …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Or run it on your computer

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

{
  "mcpServers": {
    "flipletters": {
      "command": "npx",
      "args": [
        "-y",
        "flipletters-mcp-server"
      ],
      "env": {
        "FLIPLETTERS_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http flipletters https://app.flipletters.com/mcp/v1 --header 'Authorization: your-value'

Or run it on your computer

claude mcp add flipletters --env FLIPLETTERS_API_KEY=your-value -- npx -y flipletters-mcp-server

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": {
    "flipletters": {
      "url": "https://app.flipletters.com/mcp/v1",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "flipletters": {
      "command": "npx",
      "args": [
        "-y",
        "flipletters-mcp-server"
      ],
      "env": {
        "FLIPLETTERS_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": {
    "flipletters": {
      "type": "http",
      "url": "https://app.flipletters.com/mcp/v1",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "flipletters": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "flipletters-mcp-server"
      ],
      "env": {
        "FLIPLETTERS_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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

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

Values you fill in

FLIPLETTERS_API_KEY secret required env
Your flk_ API key
Authorization secret required HTTP header
Bearer token: your flk_ API key from FlipLetters Studio > Account > API keys & agents

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain flipletters.com (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 Otheri

More stars than 0% of the other 32589 servers in this category
Published to the registry more recently than 65% of the other 32589 servers in this category
Basic checks equal to or better than 100% of the other 32589 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 FlipLetters 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: FLIPLETTERS_API_KEY, Authorization

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.3.1) reached the registry 21 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: Spec Driven Development, Remote Desktop Commander, Detailing Manager

Alternatives

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

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Runs on your computer★ 440MITUpdated 14 months ago

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Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday

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Detailing Manager

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Connect your auto detailing studio's tasks, cars, clients and revenue to Claude or ChatGPT.

Runs on your computerUpdated today

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.

FlipLetters MCP

The Model Context Protocol server for [FlipLetters](https://flipletters.com). FlipLetters makes split-flap and flip-dot board videos (the look of an old train-station departure board) with synthesized mechanical sound. Boards are written in flipcode, a small open text format. This MCP lets AI agents draft and validate boards, build Studio share links, render MP4s, and send boards to a team library or a Postiz social queue.

📚 Docs: flipletters.com/mcp · flipcode reference
🌐 Endpoint: https://app.flipletters.com/mcp/v1 (Streamable HTTP; alias https://app.flipletters.com/api/mcp)
🔑 API key: FlipLetters Studio → Account → API keys & agents (keys start with flk_; free to create)
💻 Local, no key: npx -y flipletters-mcp-server (draft tools over stdio)
🗂️ Registry name: com.flipletters/mcp

This is a public listing repo (README, server.json, LICENSE). The hosted

MCP runs at the endpoint above. The flipcode parser is open source (MIT) at

tera-sarah/flipcode.

Connect

Hosted (every `tools/call` needs a `flk_` key)

Cursor (~/.cursor/mcp.json or .cursor/mcp.json):

"mcpServers": { "flipletters": { "url": "https://app.flipletters.com/mcp/v1", "headers": { "Authorization": "Bearer YOUR_FLK_KEY" } } } }

Claude Code:

claude mcp add --transport http flipletters https://app.flipletters.com/mcp/v1 \

--header "Authorization: Bearer YOUR_FLK_KEY"

Claude Desktop (claude_desktop_config.json, via the mcp-remote bridge):

"mcpServers": { "flipletters": { "command": "npx", "args": [ "-y", "mcp-remote", "https://app.flipletters.com/mcp/v1", "--header", "Authorization:${AUTH_HEADER}" ], "env": { "AUTH_HEADER": "Bearer YOUR_FLK_KEY" } } } }

Local stdio (draft tools work with no key)

"mcpServers": { "flipletters": { "command": "npx", "args": ["-y", "flipletters-mcp-server"], "env": { "FLIPLETTERS_API_KEY": "optional: flk_ key for render and team tools" } } } }

Then ask: *"Make a trainboard that flips through 'NOW BOARDING', 'GATE 12', 'ON TIME'."*

Tools

Listing tools (GET https://app.flipletters.com/mcp/v1 or tools/list) is open. On the hosted server, every tools/call needs Authorization: Bearer flk_….

Draft

Tool	What it does
`flipletters_flipcode_reference`	The flipcode cheat sheet: directives, board types, size limits, transitions.
`flipletters_example_board`	A complete, valid flipcode document for a board type.
`flipletters_validate_board`	Parse a draft: normalized code, warnings, and a share URL.
`flipletters_template_url`	A readable Studio URL where each query parameter mirrors one flipcode line.

Render and share

Tool	What it does
`flipletters_render_board`	Start a cloud MP4 render under the key owner's plan.
`flipletters_render_status`	Poll a render job.
`flipletters_list_teams`	Teams the key owner belongs to.
`flipletters_share_to_team`	Share a board into a Team Library.

Workspaces and Postiz

Tool	What it does
`flipletters_list_workspaces`	Agency projects (workspaces) for the key owner.
`flipletters_list_postiz_destinations`	Postiz destinations attached to a project.
`flipletters_list_postiz_integrations`	Connected social channels for a project's Postiz account.
`flipletters_share_to_postiz`	Upload media and schedule, draft, or post it through Postiz.

Creating a key is free. Render usage follows the key owner's plan (free export quota, Premium, or Studio), the same as in the Studio UI.

Discovery

URL	Returns
`GET https://app.flipletters.com/mcp/v1`	Server info and tool list (no key).
`GET https://app.flipletters.com/.well-known/mcp/server.json`	MCP server manifest.
`GET https://flipletters.com/llms.txt`	Agent-readable site summary.

FlipLetters

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

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

Detailing Manager

README from the maker

FlipLetters MCP

Connect

Hosted (every tools/call needs a flk_ key)

Local stdio (draft tools work with no key)

Tools

Draft

Render and share

Workspaces and Postiz

Discovery

Links

Hosted (every `tools/call` needs a `flk_` key)