Verified conversions across 205 color spaces: CSS strings, gamut checks, .cube LUTs
Nothing to run from here
FlipLetters is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
95/100
trust score
41
downloads a day
local
or remote
60
downloads in 30d
What it does
Draft, validate, render, and share split-flap and flip-dot board videos written in flipcode.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --env 'FLIPLETTERS_API_KEY=${FLIPLETTERS_API_KEY}' --transport stdio flipletters-mcp '--' npx -y flipletters-mcp-server
# 2 — ask your agent for something these tools do
# flipletters_flipcode_reference, flipletters_validate_board, flipletters_example_board and 9 more
It needs FLIPLETTERS_API_KEY: this reads it from your environment, so export it first.
FlipLetters costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
FLAll 1 server
flipletters1 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. This one can run either way — at an address its publisher runs, or as a process under your own user, with your files and your network — and this marketplace is in the path of neither.
Claude Codedeclared by this listing
This is a public server: you run it yourself and this marketplace is not in the path. You need Node.js — the current LTS (24) is the safe choice; npx comes with it. Claude Code registers it in one command; --scope user makes it available in every project. Claude Code reads FLIPLETTERS_API_KEY (Your flk_ API key) from your environment each time it starts the server, so the value stays out of its config: export it in your shell profile (macOS, Linux), or run setx FLIPLETTERS_API_KEY … and open a new terminal (Windows). The '--' is in quotes so that PowerShell passes it on.
claude mcp add --scope user --env 'FLIPLETTERS_API_KEY=${FLIPLETTERS_API_KEY}' --transport stdio flipletters-mcp '--' npx -y flipletters-mcp-serverReconnect, or start a new session, and the tools appear in the model’s tool list.
Or connect to its publisher’s address
Its publisher also runs it at https://app.flipletters.com/mcp/v1: nothing to start on your machine, and this marketplace is not in the path.
claude mcp add --scope user --transport http flipletters-mcp https://app.flipletters.com/mcp/v1Free on mcprush, and it runs from its publisher’s own package: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it asks of you
It reaches a system of yours, so it needs your own credential rather than the publisher’s: FLIPLETTERS_API_KEY — Your flk_ API key. You set it in your own client’s config, on your machine — this marketplace never holds it.
What it writes
One config entry your client uses to start the process locally. A local server runs with your file system and your network, which is why it is priced without metering.
What you approve
12 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
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.
No parameter schema on file.
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 l
| Parameter | Type | Required | Notes |
|---|---|---|---|
| code | string | yes | A complete flipcode document (see flipletters_flipcode_reference). |
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.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| template | string | yes | Board type or alias: minimal, trainboard, station, artboard, art, flipdot, dots, marquee, desk, announcement, poster, arena, lightbox. |
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.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| board | string | no | Board type/alias, e.g. "station". |
| grid | string | no | ROWSxCOLS, e.g. "8x34". |
| title | string | no | — |
| accent | string | no | Hex color, # optional. |
| out | string | no | Canvas: "vertical", "square", "1200x630@25", … |
| sound | string | no | — |
| speed | string | no | — |
| slides | array | no | Each entry is one slide; | separates rows: "EGGS BENEDICT|FLAT WHITE". |
| flip | string | no | Transition, commas for spaces: "cascade,9,0.2,0.4". |
| hold | string | no | Seconds, e.g. "6". |
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.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| code | string | yes | Complete flipcode document. |
| repeat | integer | no | Loop the segment this many times (default 1). Caps apply for long / 4K exports. |
| wait | boolean | no | If true (default), poll until done/error. If false, return jobId immediately. |
Poll a cloud render job started with flipletters_render_board. Requires Authorization: Bearer flk_….
| Parameter | Type | Required | Notes |
|---|---|---|---|
| jobId | string | yes | Job id returned by flipletters_render_board. |
Lists FlipLetters teams the API key owner belongs to (teamId, name, inviteCode). Requires Authorization: Bearer flk_… with team scope.
No parameter schema on file.
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.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| teamId | string | yes | Team id from flipletters_list_teams. |
| name | string | yes | Display name for the template in the team library. |
| code | string | yes | Complete flipcode document. |
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_….
No parameter schema on file.
Lists Postiz destinations (masked keys) attached to a FlipLetters project. Use flipletters_list_workspaces first. Requires Authorization: Bearer flk_….
| Parameter | Type | Required | Notes |
|---|---|---|---|
| workspaceId | string | yes | Project id from flipletters_list_workspaces. |
Lists connected social channels for a project's Postiz share account. Use before flipletters_share_to_postiz to get integrationId. Requires Authorization: Bearer flk_….
| Parameter | Type | Required | Notes |
|---|---|---|---|
| workspaceId | string | yes | — |
| destinationId | string | yes | — |
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.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| workspaceId | string | yes | FlipLetters project id. |
| destinationId | string | yes | Postiz destination id on that project. |
| integrationId | string | yes | Postiz channel/integration id. |
| date | string | yes | UTC ISO datetime, e.g. 2026-08-14T15:00:00.000Z |
| type | string | no | Default schedule. |
| content | string | no | Caption / post body. |
| mediaUrl | string | no | HTTPS URL of the MP4 (from cloud render). |
| fileName | string | no | Local renders/*.mp4 name when Studio host has the file. |
| providerType | string | no | Postiz provider __type, e.g. tiktok, x, linkedin. |
Free
$0 forever
- Every tool, no call limit
- No card, and mcprush charges nothing for it
- Source published under MIT
- Runs on your machine — nothing of it reaches our gateway
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install FlipLetters or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATrust score 95 / 100
Release 0.3.1 · scanned 17 Oct 2026
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
Threat score100
Client score95
Findings1 threat · 1 capability
Capabilitymoderate
Coveragesource
Verificationnone
Surface digestb93ce73b6452e03d4acf3301d5a09d82417eac80179f5d6842ba638d0c1d2a91
Score vectorthreat 100 → client 95
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | moderate | capability blast radius (moderate) — client exposure if the model is manipulated | −3 |
| verification-discount | none | publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read | −2 |
| coverage-honesty | source | inspection depth (source) — how much of the target the scan could see | −0 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
Tool surfaceread
Implementation sourceread
Package metadataread
Live transportnot available
Tools were statically extracted from the published source (12 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. moderate is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| flipletters_flipcode_reference | no tags | |
| flipletters_validate_board | no tags | |
| flipletters_example_board | no tags | |
| flipletters_template_url | no tags | |
| flipletters_render_board | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true, handler sends an HTTP POST (apiFetch("/api/render") at dist/index.js:280 |
| flipletters_render_status | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| flipletters_list_teams | untrusted-inputexternal-sink | untrusted-input: declares openWorldHint: true (interacts with entities outside the server); external-sink: handler sends an HTTP POST (apiFetch("/api/team") at dist/index.js:426 |
| flipletters_share_to_team | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true, handler sends an HTTP POST (apiFetch("/api/team") at dist/index.js:492 |
| flipletters_list_workspaces | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| flipletters_list_postiz_destinations | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| flipletters_list_postiz_integrations | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| flipletters_share_to_postiz | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true, handler sends an HTTP POST (apiFetch("/api/postiz/schedule") at dist/index.js:710 |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
flow-1
Untrusted input can drive an external action even though no sensitive source is exposed.
Supply chain and provenance
Integrityfirst-seen
Surface digestb93ce73b6452e03d
Scanned2026-10-17
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
Always latest — the install command names no version, so it installs the newest release when it runs; the current release on file is 0.3.1. Pin a release below and the command asks for exactly that one.
0.3.1
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish FlipLetters can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.