# Jabbertoon cartoon studio (remote · jabbertoon.com)

Free 2D cartoon studio: moves, characters and looks; check a cartoon; share links. No key.

- Trust score: 69/100 (medium)
- Change this week: −1
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-17

## Components

- remote · `jabbertoon.com`: 69/100 (this document), [markdown](https://verifymcp.io/servers/com-jabbertoon-cartoon-studio/jabbertoon.md), [page](https://verifymcp.io/servers/com-jabbertoon-cartoon-studio/jabbertoon)

## Channel facts

- Endpoint: `https://jabbertoon.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-17.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2350 tokens (~261/item across 9 items; 9 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability check failed: schema churn in the 14 days we've observed: 0 tool removals, 7 breaking changes, 0 auth/transport breaks, 2 additions.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Jabbertoon cartoon studio MCP server?

Jabbertoon cartoon studio is a hosted endpoint at https://jabbertoon.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-jabbertoon-cartoon-studio 'https://jabbertoon.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-jabbertoon-cartoon-studio": {
      "url": "https://jabbertoon.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-jabbertoon-cartoon-studio": {
      "type": "http",
      "url": "https://jabbertoon.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-jabbertoon-cartoon-studio]
url = "https://jabbertoon.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-jabbertoon-cartoon-studio": {
      "type": "remote",
      "url": "https://jabbertoon.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-jabbertoon-cartoon-studio --url 'https://jabbertoon.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-jabbertoon-cartoon-studio:
    url: "https://jabbertoon.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-jabbertoon-cartoon-studio": {
      "Transport": "http",
      "Url": "https://jabbertoon.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-jabbertoon-cartoon-studio -t streamable-http -u 'https://jabbertoon.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-jabbertoon-cartoon-studio": {
      "type": "http",
      "url": "https://jabbertoon.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-17 (score 69, 0)

- [security] Tool “report_problem” rewrote its description, which is the text the model reads
- [cosmetic] “report_problem” added an optional parameter “hard_because”
- [cosmetic] “report_problem” reworded the description of “kind”

### 2026-10-16 (score 69, 0)

- [security] Tool “build” rewrote its description, which is the text the model reads
- [security] Tool “get_guide” rewrote its description, which is the text the model reads

### 2026-10-15 (score 69, 0)

- [security] Tool “build” rewrote its description, which is the text the model reads
- [security] Tool “get_guide” rewrote its description, which is the text the model reads
- [cosmetic] “build” reworded the description of “steps”

### 2026-10-14 (score 69, −1)

- [security] Tool “get_guide” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: 1793 → 2136
- [functional] New tool “build”

### 2026-10-07 (score 70, 0)

- [security regression] Stability: 0.07 → fail
- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “get_move” rewrote its description, which is the text the model reads
- [security] Tool “list_characters” rewrote its description, which is the text the model reads
- [security] Tool “list_looks” rewrote its description, which is the text the model reads
- [security] Tool “list_moves” rewrote its description, which is the text the model reads
- [security] Tool “report_problem” rewrote its description, which is the text the model reads
- [security] Tool “share_link” rewrote its description, which is the text the model reads
- [security] Tool “validate” rewrote its description, which is the text the model reads
- [functional regression] “share_link” changed the type of “cartoon”: object → object|string
- [functional regression] “validate” changed the type of “cartoon”: object → object|string
- [functional regression] Tool “get_move” dropped its output schema
- [functional regression] Tool “list_characters” dropped its output schema
- [functional regression] Tool “list_looks” dropped its output schema
- [functional regression] Tool “list_moves” dropped its output schema
- [functional regression] Tool “report_problem” dropped its output schema
- [functional regression] Tool “share_link” dropped its output schema
- [functional regression] Tool “validate” dropped its output schema
- [functional improvement] Schema quality: 327 → 224
- [functional] Server version: 1.0.0 → 1.1.0
- [functional] New tool “get_guide”
- [cosmetic] “report_problem” added an optional parameter “cli_version”
- [cosmetic] “report_problem” added an optional parameter “code”
- [cosmetic] “report_problem” added an optional parameter “os”
- [cosmetic] “report_problem” added an optional parameter “tool”
- [cosmetic] “report_problem” added an optional parameter “where”
- [cosmetic] “share_link” added an optional parameter “file”
- [cosmetic] “validate” added an optional parameter “file”
- [cosmetic] “validate” added an optional parameter “repair”
- [cosmetic] “get_move” reworded the description of “move”
- [cosmetic] “list_moves” reworded the description of “q”
- [cosmetic] “report_problem” reworded the description of “item”
- [cosmetic] “report_problem” reworded the description of “note”
- [cosmetic] “share_link” reworded the description of “cartoon”
- [cosmetic] “share_link” reworded the description of “character”
- [cosmetic] “share_link” reworded the description of “program”
- [cosmetic] “validate” reworded the description of “cartoon”
- [cosmetic] “validate” reworded the description of “character”
- [cosmetic] “validate” reworded the description of “pack”
- [cosmetic] “validate” reworded the description of “program”
- [cosmetic] “report_problem” dropped the optional parameter “request”
- [cosmetic] Tool “list_characters” changed its title: List Jabbertoon's ready-made cartoon characters → List Jabbertoon's ready-made cartoon characters and voices
- [cosmetic] Tool “share_link” changed its title: Make a jabbertoon.com link that opens a move or a character → Make a jabbertoon.com link that opens a cartoon, a move or a character
- [cosmetic] Tool “validate” changed its title: Check a Jabbertoon program, character, pack or cartoon → Check a Jabbertoon cartoon, scene, move, pack or character

### 2026-10-04 (score 70, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-03 (score 69)

First indexed and scored.

## MCP tools (9)

### `get_guide` (~217 tokens)

Read Jabbertoon's guide for writing a cartoon

Call this first. Returns one topic of Jabbertoon's guide as Markdown (under 20,000 characters): start (what it makes and the order of calls), cartoon (the JSON program: cast, scenes, lines, moves), text (the same cartoon as screenplay text), moves, characters, looks, voices, places, errors, limits, build (the 3D builder's steps), export (a build as a 3D printer's STL or 3MF, glTF for Blender, SVG blueprints, Minecraft), world (a world of blocks), walk (a place to walk), game (a game's steps), song (the editor's own file: Studio characters, lines, moves, camera shots and a song the cast sings). Units everywhere: x and y are shares of the stage (0 to 1, the ground at 0.92), times are seconds. Example: {"topic": "cartoon"}.

Input parameters:

- `topic` (string): Leave it out for start, which names the others.

### `list_moves` (~153 tokens)

List Jabbertoon's ready-made cartoon moves

Lists the ready-made moves a character can do (walk in, wave hello, hop, bow, slump, talk...): id, name, length in seconds, the bodies it works on (two legs, four, none), its settings with units, page and links. A does block plays one: {"op": "does", "who": "dog", "behaviour": "c4c:beh:wave_hello"}. q keeps the moves whose words match or that do what a word means (dance finds Groove, scared finds Cower). Example: {"q": "wave"}.

Input parameters:

- `q` (string): Words to look for ("wave", "dance"); leave it out for every move.

### `list_characters` (~125 tokens)

List Jabbertoon's ready-made cartoon characters and voices

Lists the six ready-made characters (person, kid, dog, cat, bird, monster): legs, views, the colour slots a cast entry's look.colors paints on each (a dog's fur is skin), options, page and links; the voices a line can use; and cartoon_example, a whole talking cartoon to copy. Call it to write a cast: {"dog": {"name": "Biscuit", "look": {"template": "dog", "colors": {"skin": "#8d6e63"}}, "voice": "am_puck"}}.

### `list_looks` (~93 tokens)

List Jabbertoon's art styles (looks) and body shapes

Lists the six art styles a character can be drawn in (flat, outlined, soft, storybook, bold, crayon), each with its page and a studio link, and the three body shapes (classic, big head, tall). A cast entry sets them as look.style and look.shape: {"look": {"template": "cat", "style": "crayon", "shape": "bighead"}}.

### `get_move` (~122 tokens)

Get one move's program and readable text

Returns one ready-made move: its block program as JSON, the same program as screenplay text, its length in seconds, what it works on, its settings with units, its page and links. Name it by id (c4c:beh:wave_hello), short name (wave_hello) or page slug. To write your own move, start from one, change it, then validate it. Example: {"move": "wave_hello"}.

Input parameters:

- `move` (string, required): Its id, short name or page slug, as list_moves gives them.

### `validate` (~311 tokens)

Check a Jabbertoon cartoon, scene, move, pack or character

Checks a cartoon, with the studio's own checks, before anyone sees it. Give one of cartoon, program, pack, character or file. Returns errors (it will not play as written: also a character or background the site lacks) and warnings, each {code, where, says, fix, url}, with did_you_mean and an RFC 6902 patch when certain; issues a viewer would see (off stage, overlapping, an empty stage, a line cut off) with a summary of who is where and says what when (seconds; x as a share of the stage); and, when ok, the canonical program and a link. repair: true also returns the program with every certain patch applied. Nothing you send is kept. Example: list_characters' cartoon_example.

Input parameters:

- `cartoon` (object|string): A cartoon: its program, a cartoon file {cast, program}, a project file, or its screenplay text (read only on your own computer).
- `character` (object): Your own character, {"name", "content"}, or a character pack.
- `file` (string): On your own computer only: a .json or .txt file's name in the output folder.
- `pack` (object): A whole pack: its manifest and its content.
- `program` (object): A move (get_move gives ready-made ones) or a scene program.
- `repair` (boolean): true: also return repaired: the program with every certain patch applied, and the changes.

### `share_link` (~222 tokens)

Make a jabbertoon.com link that opens a cartoon, a move or a character

Turns a cartoon, a scene, a move or a character into a jabbertoon.com link: a move opens in the block editor, the rest in the studio. It all travels after the #: nothing is uploaded or kept. All but a character's end with &from=ai (the page says an AI helper wrote it). One with errors gets them instead. Give one of cartoon, program, character or file. Example: {"program": {"v": 1, "kind": "behaviour", "scripts": [{"body": [{"op": "hop"}]}]}}.

Input parameters:

- `cartoon` (object|string): Its program, a cartoon file {cast, places?, program}, or its screenplay text (read on your own computer only).
- `character` (object): Your own character, {"name", "content"}, or a character pack.
- `file` (string): On your own computer only: a file's name in the output folder.
- `program` (object): A move (kind "behaviour"), a scene or a cartoon program.

### `build` (~385 tokens)

Build a thing in the 3D builder from steps, and link it

Builds anything (a character, an animal, a car, a house) in Jabbertoon's 3D builder from steps, as its buttons do: spine, grow, bone (a skeleton, a bone at a time), add a ready part (leg, arm, head, wing, wheel, hat ...), set, copy, remove, look. Checks every step, says what was made (its parts and size) and gives a jabbertoon.com/editor/ link that opens it in the Studio, to change and use in a cartoon, world or game. Over MCP the answer also shows a picture of it from four sides. Steps that start {"op": "new", "kind": "move"} make a move from keys, {"op": "new", "kind": "world"} a world (a level is played to check it), and kind "game" a game seen from the side, from above or in space, or "trench", "space", "surface" or "sky" a game with depth to fly, "walk" a place to walk at real size (played on foot: told what cannot be reached). A refused step says where, why and how to fix it. export_link opens Export, free: STL/3MF to 3D print, glTF (Blender, Unity, Godot), SVG, Minecraft .schem. The steps: get_guide {"topic": "build"}, a game's {"topic": "game"}.

Input parameters:

- `build` (object): A build to change (the build an answer gave); without it the steps start from a new spine.
- `steps` (array): The steps, in order: {op: spine | grow | bone | add | set | copy | remove | look, on (a part, or a name an earlier step gave with as), ...}.

### `report_problem` (~402 tokens)

Tell Jabbertoon something is wrong

Tells the people who make Jabbertoon something is wrong: a wrong answer, a check that refused a good cartoon or passed a bad one, a move that looks wrong, a link that does not open, wrong docs, something missing, or a step that was hard to get right (kind hard_step, with hard_because: optional, never needed to go on). Unlike the other tools, it keeps what you send: the report (kind, tool, code, where, item, note, hard_because) is saved for a person to read. Never put the cartoon, a name, an address or anything about the person you help in it. Example: {"kind": "validator_wrong", "tool": "validate", "code": "op_unknown", "note": "say was refused in a cartoon"}.

Input parameters:

- `cli_version` (string): Set by the jabbertoon tool.
- `code` (string): The error code it gave, e.g. op_unknown.
- `hard_because` (string): For kind hard_step: what made the step hard (an error's words, a field that was unclear, a size that was hard to guess). Optional. No cartoon, names or personal details.
- `item` (string): What it is about: a move, character or look (c4c:beh:bow, dog, crayon), or a page.
- `kind` (string, required): What kind of problem it is (hard_step: a step that was hard to get right).
- `note` (string): What was wrong, in a sentence or two. No cartoon, names or personal details.
- `os` (string): Set by the jabbertoon tool: win32, darwin or linux.
- `tool` (string): The tool whose answer was wrong, e.g. validate.
- `where` (string): Where it pointed, e.g. scripts[0].body[2].

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-jabbertoon-cartoon-studio/jabbertoon#diagnostics

## Score history

- 2026-10-17: 69
- 2026-10-16: 69
- 2026-10-15: 69
- 2026-10-14: 69
- 2026-10-13: 70
- 2026-10-12: 70
- 2026-10-11: 70
- 2026-10-10: 70
- 2026-10-07: 70
- 2026-10-05: 70
- 2026-10-04: 70
- 2026-10-03: 69

## Common questions

### What is the Jabbertoon cartoon studio MCP server?

Jabbertoon cartoon studio is an MCP server listed in the public MCP registry as com.jabbertoon/cartoon-studio. Free 2D cartoon studio: moves, characters and looks; check a cartoon; share links. No key. This page covers its hosted endpoint (https://jabbertoon.com/mcp).

### Is the Jabbertoon cartoon studio MCP server safe to use?

Jabbertoon cartoon studio scores 69 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Jabbertoon cartoon studio MCP server expose?

Jabbertoon cartoon studio exposes 9 tools: get_guide, list_moves, list_characters, list_looks, get_move, and 4 more. Their descriptions and schemas cost roughly 2,030 tokens of context every time the server is loaded.

### Does the Jabbertoon cartoon studio MCP server require authentication?

No. We connected to Jabbertoon cartoon studio without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Jabbertoon cartoon studio MCP server still maintained?

Jabbertoon cartoon studio is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://jabbertoon.com/mcp
- Website: https://jabbertoon.com/for-ai/
- Changelog RSS feed: https://verifymcp.io/servers/com-jabbertoon-cartoon-studio/jabbertoon.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-jabbertoon-cartoon-studio/jabbertoon.json
- HTML version of this page: https://verifymcp.io/servers/com-jabbertoon-cartoon-studio/jabbertoon