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Jabbertoon cartoon studio

REMOTE · JABBERTOON.COM

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

Available components

−1 this week 69 Trust /100

Last scanned (4 hours ago)

Scores higher than 59% of remote servers

Reachable. Last reached 17 Oct 2026.

Category Design and Media

Trust breakdown (7 categories)

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. How we score → Why this is hard to score →

Endpoint Security74
Transport & Reachability100
Schema Quality & AI Usability65
  • AI-judged instruction clarity (excellent).Pass
  • 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. See how to fix → Fail
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
  • Stability check failed: schema churn in the 14 days we've observed: 0 tool removals, 7 breaking changes, 0 auth/transport breaks, 2 additions. See how to fix → Fail
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a current MCP spec version (2026-07-28).Pass
Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 17 Oct 26 0
    • Tool “report_problem” rewrote its description, which is the text the model reads security
    • “report_problem” added an optional parameter “hard_because” cosmetic
    • “report_problem” reworded the description of “kind” cosmetic
  • 16 Oct 26 0
    • 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 security
  • 15 Oct 26 0
    • 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 security
    • “build” reworded the description of “steps” cosmetic
  • 14 Oct 26 −1
    • Tool “get_guide” rewrote its description, which is the text the model reads security
    • Schema quality: 1793 → 2136 ▼ functional
    • New tool “build” functional
  • 7 Oct 26 0
    • 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 security
    • “share_link” changed the type of “cartoon”: object → object|string ▼ functional
    • “validate” changed the type of “cartoon”: object → object|string ▼ functional
    • Tool “get_move” dropped its output schema ▼ functional
    • Tool “list_characters” dropped its output schema ▼ functional
    • Tool “list_looks” dropped its output schema ▼ functional
    • Tool “list_moves” dropped its output schema ▼ functional
    • Tool “report_problem” dropped its output schema ▼ functional
    • Tool “share_link” dropped its output schema ▼ functional
    • Tool “validate” dropped its output schema ▼ functional
    • Schema quality: 327 → 224 ▲ functional
    • Server version: 1.0.0 → 1.1.0 functional
    • New tool “get_guide” functional
    • “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 cosmetic
  • 4 Oct 26 +1
    • Stability: unverified → 0.03 ▲ functional
  • 3 Oct 26 69

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 17 Oct 2026 · Probed https://jabbertoon.com/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=www.jabbertoon.com CN=YR1,O=Let's Encrypt,C=US 1 Oct 2026 30 Dec 2026 RSA 2048 SHA256-RSA 5123dd42b160a9c2de1bcfc66acbb03ef0a
SANs: jabbertoon.com, www.jabbertoon.com
CN=YR1,O=Let's Encrypt,C=US (CA) CN=Root YR,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 RSA 2048 SHA256-RSA a20253f15f2691c05dc1ce13b9bcca4e
CN=Root YR,O=ISRG,C=US (CA) CN=ISRG Root X1,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 RSA 4096 SHA256-RSA f24b6d17f9d9ad7cb1c9fea78782699f

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of jabbertoon.com. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
com. present 19718 13 Verified
jabbertoon.com. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
x-content-type-options nosniff
referrer-policy strict-origin-when-cross-origin

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://jabbertoon.com/mcp Verified 200
http (plaintext) http://jabbertoon.com/mcp HTTPS enforced 301 https://jabbertoon.com/mcp
MCP tools · 9 exposed · ~2,030 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
build ~385

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"}.

NameTypeReqDescription
buildobject–A build to change (the build an answer gave); without it the steps start from a new spine.
stepsarray–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), ...}.

No output schema declared.

No examples provided.

get_guide ~217

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"}.

NameTypeReqDescription
topicstring–Leave it out for start, which names the others.

No output schema declared.

No examples provided.

get_move ~122

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"}.

NameTypeReqDescription
movestringyesIts id, short name or page slug, as list_moves gives them.

No output schema declared.

No examples provided.

list_characters ~125

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"}}.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

list_looks ~93

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"}}.

Input schema present but exposes no named parameters.

No output schema declared.

No examples provided.

list_moves ~153

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"}.

NameTypeReqDescription
qstring–Words to look for ("wave", "dance"); leave it out for every move.

No output schema declared.

No examples provided.

report_problem ~402

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"}.

NameTypeReqDescription
cli_versionstring–Set by the jabbertoon tool.
codestring–The error code it gave, e.g. op_unknown.
hard_becausestring–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.
itemstring–What it is about: a move, character or look (c4c:beh:bow, dog, crayon), or a page.
kindstringyesWhat kind of problem it is (hard_step: a step that was hard to get right).
notestring–What was wrong, in a sentence or two. No cartoon, names or personal details.
osstring–Set by the jabbertoon tool: win32, darwin or linux.
toolstring–The tool whose answer was wrong, e.g. validate.
wherestring–Where it pointed, e.g. scripts[0].body[2].

No output schema declared.

No examples provided.

share_link ~222

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"}]}]}}.

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

No output schema declared.

No examples provided.

validate ~311

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.

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

No output schema declared.

No examples provided.

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.

remote · jabbertoon.com

# add to Claude Code
claude mcp add --transport http com-jabbertoon-cartoon-studio 'https://jabbertoon.com/mcp'
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.