MCP.Market

FlipLetters MCP server

online · 100% uptime
by flipletters.com·com.flipletters/mcp·v0.3.1
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Draft, validate, render, and share split-flap and flip-dot board videos written in flipcode.

A91/100grade A
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Safety scan
A91/100

full report

Adoption
Growing

0 stars43 downloads/wk

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FlipLetters tools (13, 2 write)

write = sends, deletes, buys or posts
  • flipletters_create_animationwrite actionFree

    One call from plain text to a FlipLetters video: builds a board on a text template (default minimal), checks the text against FlipLetters content rules, cloud-renders an MP4 under the signed-in owner's plan (free renders carry the FlipLetters watermark), and returns mp4Url (downloadable HTTPS), shareUrl (opens in Studio), jobId, status and expiresAt. If the render is still running when this returns, poll flipletters_render_status with jobId.

  • flipletters_example_boardFree

    Returns a complete, valid flipcode document for a board type (minimal, trainboard/station, artboard, flipdot, marquee, announcement, arena) — a known-good starting point to edit rather than writing from scratch.

  • flipletters_flipcode_referenceFree

    Returns the flipcode cheat sheet (spec v1): directives, board types and size limits, transition modes, and flip-native effect recipes. Call this before writing a board so the code you produce is valid on the first try.

  • flipletters_list_postiz_destinationsFree

    Lists Postiz destinations (masked keys) attached to a FlipLetters project. Use flipletters_list_workspaces first. Requires Authorization: Bearer flk_….

  • flipletters_list_postiz_integrationsFree

    Lists connected social channels for a project's Postiz share account. Use before flipletters_share_to_postiz to get integrationId. Requires Authorization: Bearer flk_….

  • flipletters_list_teamsFree

    Lists FlipLetters teams the API key owner belongs to (teamId, name, inviteCode). Requires Authorization: Bearer flk_… with team scope.

  • flipletters_list_workspacesFree

    Lists agency projects (workspaces) for the API key owner, plus the active project id. Project-scoped keys return their bound project as active. Requires Authorization: Bearer flk_….

  • flipletters_render_boardFree

    Parses flipcode and submits a cloud MP4 render under the API key owner's FlipLetters plan (same free quota / Premium / Studio limits as the Studio). Requires Authorization: Bearer flk_… (or FLIPLETTERS_API_KEY on stdio). Polls until done (or returns jobId if wait=false). Prefer share links for free previews; only render when the human wants an MP4 file.

  • flipletters_render_statusFree

    Poll a cloud render job started with flipletters_render_board. Requires Authorization: Bearer flk_….

  • flipletters_share_to_postizwrite actionFree

    Uploads a cloud media URL (or Studio host local fileName) to a project's Postiz destination and schedules/drafts/posts it. Loop: render_board → list_workspaces → list_postiz_destinations → list_postiz_integrations → share_to_postiz. Requires Authorization: Bearer flk_…. Prefer mediaUrl from flipletters_render_board.

  • flipletters_share_to_teamFree

    Parses flipcode and shares the board into a Team Library the key owner is a member of. Requires Authorization: Bearer flk_…. Use flipletters_list_teams first to get teamId.

  • flipletters_template_urlFree

    Builds a human-readable FlipLetters Studio URL where every query parameter mirrors one flipcode line — good for short text boards you want legible in the address itself (chat messages, docs). For full fidelity or paint grids use flipletters_validate_board's share link instead. Slides are strings with | between rows.

  • flipletters_validate_boardFree

    Parses a flipcode document, returning the normalized canonical code, any warnings (out-of-range values are clamped, unknown lines ignored), a board summary, and links: a share URL that opens the exact board in the FlipLetters Studio, and an open-with-code URL that also reveals the code panel. Use this after drafting a board; fix warnings and re-validate until clean, then give the human the share link.

Public scan report

scanner v0.1.10 · 2026-10-29 · same rubric, same numbers if you re-run it

no findings
  • Code scan2 source files scanned25/25
  • Live reliabilityremote reachable in 738ms20/20
  • Tool poisoning13 tool descriptions checked15/15
  • Auth qualityAPI key sent as a header8/15
  • Maintenancelast push 9 days ago15/15
  • Maintainer identitynamespace and repository owner differ; GitHub account older than a year; website matches verified namespace8/10
Overall 91/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How FlipLetters compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
91/100
higher than 85% of 48,255 servers
Tools
13
the typical server has 7
Tools that change things
15%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
159 ms
faster than 71% of 30,031 servers
Downloads a week
43
more than 35% of 12,191 servers with a package

What its tools let an agent do: 11 read · 2 change

Install FlipLetters in Claude Code, Cursor or VS Code

claude mcp add --transport http mcp https://app.flipletters.com/mcp/v1
Add to Cursor

What the publisher says

From the FlipLetters repository's README, as published. We do not edit it. Read it on GitHub

FlipLetters MCP

The Model Context Protocol server for FlipLetters. 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 (claudedesktopconfig.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

Render and share

Workspaces and 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

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

FlipLetters: common questions

Is FlipLetters MCP server safe?
Yes, by our scan: it is graded A (91/100). Read the FlipLetters safety report
How do I install FlipLetters?
It runs remotely at app.flipletters.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does FlipLetters need an API key?
Yes. The registry entry asks for FLIPLETTERS_API_KEY, Authorization.
Is FlipLetters maintained?
The last commit was 16 days ago (2026-10-19). The latest release is v0.3.1.
Is FlipLetters up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of FlipLetters?
Servers from other publishers that do the same job: Semiotic MCP server.
How does FlipLetters compare with other MCP servers?
safety score 91/100 (higher than 85% of 48,255 servers); tools 13 (the typical server has 7); tools that change things 15% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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