Verified conversions across 205 color spaces: CSS strings, gamut checks, .cube LUTs
Nothing to run from here
PrismPoster Creator Tools 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.
100/100
trust score
12
downloads a day
local
or remote
1k
downloads in 30d
What it does
Social media frame sizes with sourced safe areas, plus aspect-ratio, bitrate and subtitle tools.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user prismposter-creator-tools-mcp '--' npx -y --package=@prismposter/creator-tools prismposter-mcp
# 2 — ask your agent for something these tools do
# get_social_media_placement, list_social_media_placements, check_safe_area and 4 more
PrismPoster Creator Tools costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
PRAll 1 server
prismposter1 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. The '--' is in quotes so that PowerShell passes it on.
claude mcp add --scope user prismposter-creator-tools-mcp '--' npx -y --package=@prismposter/creator-tools prismposter-mcpReconnect, 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://www.prismposter.com/api/mcp: nothing to start on your machine, and this marketplace is not in the path.
claude mcp add --scope user --transport http prismposter-creator-tools-mcp https://www.prismposter.com/api/mcpFree 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 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
7 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.
Read from its source code. A server that builds its tool list when it starts can list more tools than this.
Look up one social media placement by id and return its frame size, aspect ratio, first-party safe-area insets in px, usable box, and the official page the figures came from. Pass sourceWidth and sourceHeight together to also get the centre-crop and letterbox plan that fits your footage to this…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| id | string | yes | Placement id, e.g. instagram-reels, tiktok-video or youtube-shorts. |
| sourceWidth | integer | no | Width of your source footage in px. Requires sourceHeight. |
| sourceHeight | integer | no | Height of your source footage in px. Requires sourceWidth. |
List every supported social media placement (or one platform's) with frame size, aspect ratio, safe-area insets in px, usable box and first-party source URL, in one response. Use this to browse, compare platforms, or find a placement id; use get_social_media_placement when you already know the id…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| platform | string | no | Only return placements for this platform. Omit for all platforms. |
Check whether a rectangle (a caption, logo or button, in px on the placement's own frame, origin top-left) stays inside the placement's published safe area, and by how many px it intrudes past each edge if not. Use this to validate a layout before export; use get_social_media_placement for the raw…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| placementId | string | yes | Placement id, e.g. instagram-reels. |
| x | integer | yes | Element's left edge in px from the frame's left edge. |
| y | integer | yes | Element's top edge in px from the frame's top edge. |
| width | integer | yes | Element width in px. |
| height | integer | yes | Element height in px. |
Reduce any pixel size to its simplest aspect ratio (1920x1080 is 16:9), round it up to an even or codec-block multiple, and, given a target ratio, return the centre-crop and letterbox/pillarbox plans with the px removed or added per edge. Use this for arbitrary sizes and ratios (cinema 2.39:1, a…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| width | integer | yes | Frame width in px. |
| height | integer | yes | Frame height in px. |
| targetRatioW | number | no | Width term of the ratio to crop or pad to, e.g. 9 for 9:16 or 2.39 for 2.39:1. Requires targetRatioH. |
| targetRatioH | number | no | Height term of the target ratio, e.g. 16 for 9:16. Requires targetRatioW. |
| blockSize | integer | no | Round dimensions up to a multiple of this: 2 for H.264 4:2:0, 16 for macroblock-aligned. Default 2. |
Video size and bitrate arithmetic for a clip of durationSec. Pass totalKbps to get the encoded file size (bytes, binary MiB and decimal MB); pass targetBytes to get the highest total bitrate that fits that size; add widthPx, heightPx and fps (with totalKbps) to get bits per pixel, a…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| durationSec | number | yes | Clip length in seconds. |
| totalKbps | number | no | Combined video + audio bitrate in kbps. Needed for file size and bits per pixel. |
| targetBytes | number | no | File-size cap in bytes (25 MB = 25000000) to solve for the maximum total kbps. |
| widthPx | integer | no | Frame width in px, for bits per pixel. |
| heightPx | integer | no | Frame height in px, for bits per pixel. |
| fps | number | no | Frame rate, for bits per pixel. |
Convert subtitle text between SRT, WebVTT and ASS/SSA, optionally shifting every cue by shiftMs, and return the converted text with the cue count and any warnings. Pass the file contents, not a path. The input format is detected from the content unless fromFormat is given. Malformed blocks are…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| input | string | yes | The full subtitle file contents as text. |
| toFormat | string | yes | Format to convert to. |
| fromFormat | string | no | Format of the input. Omit to detect it from the content. |
| shiftMs | integer | no | Move every cue by this many ms: positive is later, negative earlier. Cues pushed before 0 clamp to 0. |
Tempo arithmetic for editing to music: pass tap timestamps (ms) to estimate BPM, with a spread figure that shows how steady the taps were, or pass a known bpm to get the beat and 4/4 bar length in ms for cutting on the beat. It works on numbers you supply and does not analyse audio. Taps more than…
| Parameter | Type | Required | Notes |
|---|---|---|---|
| timestampsMs | array | no | Tap times in ms from a monotonic clock (performance.now()), in order. |
| bpm | number | no | Known tempo in beats per minute. Used instead of the estimate when both are given. |
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 PrismPoster Creator Tools 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 100 / 100
Release 1.0.0 · scanned 28 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 score100
Findings0 threat · 0 capability
Capabilityminimal
Coveragesource
Verificationsource
Surface digest6b580f4ebdcf5dde634d569b69d3f34b8afa8c0246291f4bba1ac269626b4c00
Score vectorthreat 100 → client 100
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | minimal | capability blast radius (minimal) — client exposure if the model is manipulated | −0 |
| verification-discount | source | publisher verification (provenance) — cryptographic build provenance ties the artifact to its source | −0 |
| 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 (7 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. minimal is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| get_social_media_placement | untrusted-input | untrusted-input: keyword "browse" |
| list_social_media_placements | no tags | |
| check_safe_area | no tags | |
| calculate_aspect_ratio | no tags | |
| estimate_video_bitrate | no tags | |
| convert_subtitles | no tags | |
| estimate_tempo | no tags |
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.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
Integrityfirst-seen
Surface digest6b580f4ebdcf5dde
Scanned2026-10-28
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 1.0.0. Pin a release below and the command asks for exactly that one.
1.0.0
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 PrismPoster Creator Tools 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.