Agent skill

Cartesia

by Anil-matcha in Anil-matcha/awesome-muse-connectors

Cartesia text-to-speech: synthesize speech audio and browse voices.

Install Cartesia

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors cartesia --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .claude/skills && cp -r skills-src/connectors/cartesia .claude/skills/cartesia && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "cartesia" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/cartesia into .claude/skills/cartesia/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cartesia", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/cartesia

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors cartesia --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .agents/skills && cp -r skills-src/connectors/cartesia .agents/skills/cartesia && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "cartesia" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/cartesia into .agents/skills/cartesia/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cartesia", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors cartesia --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/connectors/cartesia .cursor/skills/cartesia && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "cartesia" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/cartesia into .cursor/skills/cartesia/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cartesia", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Anil-matcha/awesome-muse-connectors.git --path connectors/cartesia

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors cartesia --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/connectors/cartesia .gemini/skills/cartesia && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "cartesia" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/cartesia into .gemini/skills/cartesia/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cartesia", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors cartesia

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .github/skills && cp -r skills-src/connectors/cartesia .github/skills/cartesia && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "cartesia" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/cartesia into .github/skills/cartesia/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cartesia", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Anil-matcha/awesome-muse-connectors cartesia --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/connectors/cartesia .opencode/skills/cartesia && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "cartesia" agent skill from https://github.com/Anil-matcha/awesome-muse-connectors/tree/main/connectors/cartesia into .opencode/skills/cartesia/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cartesia", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: cartesia
GitHub stars: 1.3k
Token cost: ~773 tokens
SKILL.md length: 286 words
Files: 2
Skills in repo: 153
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Cartesia text-to-speech: synthesize speech audio and browse voices.

Works in 4 steps: TTS synthesis is credit-metered. Every… → Voice creation and voice cloning are… → Never use API keys in client-side code.… → …
Phrases: cartesia
SKILL.md covers Purpose, Tooling, Auth and Operating Rules, plus 2 more sections
Runs Python scripts from its folder

What it does

Cartesia is an agent skill from Anil-matcha/awesome-muse-connectors. Cartesia text-to-speech: synthesize speech audio and browse voices. Trigger phrases: cartesia, text to speech, TTS, synthesize voice, voiceover.

Its SKILL.md is about 770 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `bin/cartesia.py`).

It sits in Media & Creative, covering Text to speech and voice. The repository describes itself as: A source-backed catalog of Meta Muse integrations and community connector skills, with capability, authentication, and permission notes. The licence is MIT.

When your agent uses it

Phrases: cartesia
Synthesize voice

Example prompts

“/cartesia”

Requirements

Python 3

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

TTS synthesis is credit-metered. Every tts call spends Cartesia credits, so synthesize only what the user asked for and batch long scripts…
Voice creation and voice cloning are confirmation-gated: confirm with the user before creating or cloning any voice. This draft CLI does…
Never use API keys in client-side code. The connector only ever handles the surrogate, never the raw key.
The CLI pins Cartesia-Version: 2026-08-14. Treat a version bump like a dependency upgrade and do not change the date casually.

What it can do on your machine

Read from SKILL.md and the folder at commit d6dc5d8. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships script files (Python), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cartesia loads about 773 tokens when it runs. Until then it costs about 38 tokens; SKILL.md has 286 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~38
When it runs · the whole SKILL.md, loaded when a task matches: ~773

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Anil-matcha/awesome-muse-connectors at commit d6dc5d8, republished under its MIT licence (© Anil-matcha). 286 words, ~773 tokens.

Download SKILL.mdSave it as .claude/skills/cartesia/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: cartesia
description: Cartesia text-to-speech: synthesize speech audio and browse voices. Trigger phrases: cartesia, text to speech, TTS, synthesize voice, voiceover.
metadata.includeInPrompt: true
tagline: Generate spoken audio from text with Cartesia's Sonic models (40+ languages) and browse the Cartesia voice library. Reach for this when the user wants…
catalog_auth: API key via the secure credential flow
catalog_hosts: api.cartesia.ai

Cartesia

Purpose

Generate spoken audio from text with Cartesia's Sonic models (40+ languages) and browse the Cartesia voice library. Reach for this when the user wants narration, voiceovers, or spoken-audio files produced from a script.

Tooling

All commands go through bin/cartesia.py. Every request automatically sends the required date header Cartesia-Version: 2026-08-14.

bash

bin/cartesia.py auth
# {"ok": true, "voices": 60} on success

bin/cartesia.py voices
# list available voices (id, name, language)

bin/cartesia.py voice-get --id <VOICE_ID>
# details for a single voice

bin/cartesia.py tts --text "Hello world" --voice-id <VOICE_ID> --out narration.wav
# synthesize speech to a local WAV file; prints the saved path

bin/cartesia.py tts --text "Bonjour le monde" --voice-id <VOICE_ID> \
    --language fr --model-id sonic-3 --out fr.wav

Notes:

tts returns audio binary. The CLI writes it to --out (default cartesia-output.wav) and prints the resulting path.
Streaming TTS (POST /tts/sse) and the WebSocket TTS/STT surfaces are real-time and outside CLI scope.

Auth

Provider id: cartesia (credential is collected as custom.cartesia)
Collection: Cartesia API key (sk_car_...) via the secure credential flow (credentials.request_api_access); create one at play.cartesia.ai/keys
Allowed hosts: api.cartesia.ai
Connect placement: bearer_header (the key goes in Authorization: Bearer <key>)
The API also requires the date header Cartesia-Version: 2026-08-14 on every request; the CLI sends it for you.
Status check: bin/cartesia.py auth

Operating Rules

TTS synthesis is credit-metered. Every tts call spends Cartesia credits, so synthesize only what the user asked for and batch long scripts into as few calls as possible.
Voice creation and voice cloning are confirmation-gated: confirm with the user before creating or cloning any voice. This draft CLI does not ship a clone command; use the Cartesia dashboard or SDK for cloning.
Never use API keys in client-side code. The connector only ever handles the surrogate, never the raw key.
The CLI pins Cartesia-Version: 2026-08-14. Treat a version bump like a dependency upgrade and do not change the date casually.

Files

SKILL.md
bin/cartesia.py

Maturity

🧪 Draft: written from Cartesia's public API docs with header and paths cross-checked against official docs at build time; not yet live-tested end-to-end. Voice create/clone and pronunciation dictionaries are not yet in the CLI.

Files

SKILL.md and 1 other file in connectors/cartesia of Anil-matcha/awesome-muse-connectors.

SKILL.md
bin/cartesia.py

Open the folder on GitHubat commit d6dc5d8

Compare with similar skills

Cartesia next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Cartesia compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Cartesia this skillAnil-matcha/awesome-muse-connectors	1.3k	—	~773	Automated safety check: Pass	MIT	5 days ago
MoneyPrinterTurbo Video Generatorharry0703/MoneyPrinterTurbo	130k	—	~2.1k	Automated safety check: Warn	MIT	yesterday
HyperFrames Media Useheygen-com/hyperframes	60k	—	~2.4k	Automated safety check: Pass	Apache-2.0	today
Openspec OnboardSAP/e-mobility-charging-stations-simulator	227	25 repos	~3.5k	Automated safety check: Pass	MIT	today
Blog AudioAgriciDaniel/claude-blog	2.3k	1 repos	~2.2k	Automated safety check: Notes	MIT	2 days ago
Musictadaspetra/loop	296	2 repos	~827	Automated safety check: Pass	MIT	8 days ago

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Questions about Cartesia

What does Cartesia do?

Cartesia text-to-speech: synthesize speech audio and browse voices. Cartesia is an agent skill from Anil-matcha/awesome-muse-connectors. Cartesia text-to-speech: synthesize speech audio and browse voices.

When should I use Cartesia?

Cartesia fits situations like: phrases: cartesia; synthesize voice.

How do I install Cartesia in Claude Code?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a claude-code`. Or copy the skill folder (connectors/cartesia in Anil-matcha/awesome-muse-connectors) into .claude/skills/cartesia in your project. Claude Code loads it when a task matches its description.

How do I install Cartesia in Codex?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a codex`. Or copy the skill folder (connectors/cartesia in Anil-matcha/awesome-muse-connectors) into .agents/skills/cartesia in your project. Codex loads it when a task matches its description.

Can I use Cartesia in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Anil-matcha/awesome-muse-connectors --skill cartesia -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cartesia, .gemini/skills/cartesia, .github/skills/cartesia and .opencode/skills/cartesia in your project.

What does Cartesia need to run?

Going by SKILL.md and its folder, Cartesia needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Cartesia access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Cartesia safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Cartesia use?

Cartesia is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Cartesia use?

About 773 tokens (SKILL.md is roughly 3.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Cartesia?

Skills that share tags, products or a category with Cartesia: MoneyPrinterTurbo Video Generator (harry0703/MoneyPrinterTurbo, 130k stars), HyperFrames Media Use (heygen-com/hyperframes, 60k stars), Openspec Onboard (SAP/e-mobility-charging-stations-simulator, 227 stars) and Blog Audio (AgriciDaniel/claude-blog, 2.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Cartesia?

Anil-matcha (a GitHub user) maintains it in Anil-matcha/awesome-muse-connectors, which has 1,347 GitHub stars. The repository holds 153 skills in this directory. The repository was last updated on October 5, 2026.

Source: Anil-matcha/awesome-muse-connectors on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Cartesia

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Cartesia

Purpose

Tooling

Auth

Operating Rules

Files

Maturity

Files

Compare with similar skills

Similar skills

More from Anil-matcha/awesome-muse-connectors

Related

Questions about Cartesia