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Agent skill

Elevenlabs Local Dev Loop

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

A skill your agent uses when setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking, hot reload, quota-aware iteration, and audio-output testing that does not…

MITAuto-check: notesMedia & Creative

Install Elevenlabs Local Dev Loop

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill elevenlabs-local-dev-loop -a claude-code

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

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace elevenlabs-local-dev-loop --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/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/elevenlabs-local-dev-loop .claude/skills/elevenlabs-local-dev-loop && 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/

Facts

Skill name
elevenlabs-local-dev-loop
GitHub stars
2.8k
Token cost
~1.4k tokens
SKILL.md length
541 words
Files
3 (incl. references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking, hot reload, quota-aware iteration, and audio-output testing that does not…

  • Works in 6 steps: Project structure — lay out… → Environment configuration — write an… → Mock the SDK — write… → …
  • Setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking
  • SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 4 more sections
  • Calls npm and tsx; needs ELEVENLABS_API_KEY

What it does

Elevenlabs Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Use when setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking, hot reload, quota-aware iteration, and audio-output testing that does not burn character quota during development. Trigger with "elevenlabs dev setup", "elevenlabs local development", "elevenlabs dev environment", "develop with elevenlabs", "test elevenlabs locally".

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/examples.md` and `references/implementation.md`). Compatibility notes: Designed for Claude Code

It sits in Media & Creative, covering Text to speech and voice. It works with ElevenLabs. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking
  • Quota-aware iteration
  • Audio-output testing that does not burn character quota during development
  • With elevenlabs dev setup

Example prompts

  • “elevenlabs dev setup”
  • “elevenlabs local development”
  • “elevenlabs dev environment”
  • “/elevenlabs-local-dev-loop”

Requirements

  • Node.js
  • A credential in ELEVENLABS_API_KEY
  • Compatibility (from SKILL.md): Designed for Claude Code
  • Pre-approved tools (allowed-tools): Read, Write, Edit, Bash(npm:*), Bash(pnpm:*)

Workflow steps

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

  1. Project structure — lay out src/elevenlabs/ (client, config, tts),
  2. Environment configuration — write an environment-aware config.ts that
  3. Mock the SDK — write tests/mocks/elevenlabs.ts that returns the
  4. Development scripts — add dev (tsx watch), test, test:watch,
  5. Quota-aware development — add src/check-quota.ts that reads
  6. Integration test guard — write tests/tts.test.ts where the real-API

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Bash(npm:*)
    • Bash(pnpm:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • npm
    • tsx

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com
    • vitest.dev

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • ELEVENLABS_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Designed for Claude Code

    From compatibility in the SKILL.md frontmatter.

Context cost

Elevenlabs Local Dev Loop loads about 1.4k tokens when it runs, and up to ~3.3k if it reads all its reference files. Until then it costs about 100 tokens; SKILL.md has 541 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~100
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~3.3k

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:45
    available in `.env.local`.
  • NoteMentions a .env fileSKILL.md:57
    and `.env.local` / `.env.example`. Full tree in the reference.
  • NoteMentions a .env fileSKILL.md:107
    o API key | Set `ELEVENLABS_API_KEY` in `.env.local` |

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 jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 541 words, ~1,434 tokens.

Download SKILL.mdSave it as .claude/skills/elevenlabs-local-dev-loop/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
elevenlabs-local-dev-loop
description
Use when setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking, hot reload, quota-aware iteration, and audio-output testing that does not burn character quota during development. Trigger with "elevenlabs dev setup", "elevenlabs local development", "elevenlabs dev environment", "develop with elevenlabs", "test elevenlabs locally".
allowed-tools
Read, Write, Edit, Bash(npm:*), Bash(pnpm:*)
compatibility
Designed for Claude Code
version
1.6.0
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, voice, ai, elevenlabs, tts, testing

ElevenLabs Local Dev Loop

Overview

Set up a fast, cost-effective local development workflow for ElevenLabs audio projects. The loop centers on three moves — mock the SDK so unit tests never burn character quota, gate real API calls behind an explicit ELEVENLABS_INTEGRATION=1 flag, and select a cheaper model in dev while keeping the high-quality model for production — with tsx watch hot reload and a quota checker to round out the cycle.

Follow the high-level flow below to scaffold the project, then drill into references/implementation.md for the full code of every step and references/examples.md for worked end-to-end runs.

Prerequisites

Before starting, confirm your environment is ready:

  • The elevenlabs-install-auth setup is complete, so the SDK (@elevenlabs/elevenlabs-js) is installed and ELEVENLABS_API_KEY is available in .env.local.
  • Node.js 18+ with npm or pnpm.
  • vitest installed as the test runner (recommended) — it powers the mock layer and the integration-test guard.

Instructions

Work through the six steps in order. Each is summarized here; the full code for every step lives in references/implementation.md.

  1. Project structure — lay out src/elevenlabs/ (client, config, tts), tests/__mocks__/ and tests/fixtures/sample.mp3, a git-ignored output/, and .env.local / .env.example. Full tree in the reference.

  2. Environment configuration — write an environment-aware config.ts that picks the model and output format by NODE_ENV. This is the essential skeleton:

    typescript
    // src/elevenlabs/config.ts
export function loadConfig() {
  const env = process.env.NODE_ENV || "development";
  return {
    apiKey: process.env.ELEVENLABS_API_KEY || "",
    // cheaper/faster in dev, best quality in prod
    modelId: env === "production"
      ? "eleven_multilingual_v2"   // 1.0 credits/char
      : "eleven_flash_v2_5",       // 0.5 credits/char, ~75ms
    defaultVoiceId: process.env.ELEVENLABS_VOICE_ID || "21m00Tcm4TlvDq8ikWAM",
    outputFormat: "mp3_22050_32",  // smaller files for dev
  };
}

  3. Mock the SDK — write tests/__mocks__/elevenlabs.ts that returns the sample.mp3 fixture from textToSpeech.convert/stream and stubs voices.getAll and user.get, so unit tests cost nothing.

  4. Development scripts — add dev (tsx watch), test, test:watch, test:integration, generate, and quota scripts to package.json.

  5. Quota-aware development — add src/check-quota.ts that reads user.subscription and exits non-zero when fewer than 1000 characters remain, so a low balance fails fast.

  6. Integration test guard — write tests/tts.test.ts where the real-API test is it.skipIf(!useRealApi) and only runs under ELEVENLABS_INTEGRATION=1; the mocked test always runs.

See references/implementation.md for the complete, copy-pasteable code for each step.

Show full SKILL.md (239 more words)Show less

Output

  • Working development environment with hot reload via tsx watch
  • Mock layer that avoids API calls and character charges during dev
  • Quota checker to prevent surprise billing
  • Integration test guard pattern (ELEVENLABS_INTEGRATION=1)
  • Environment-aware model selection (cheap in dev, quality in prod)

Error Handling

ErrorCauseSolution
MODULE_NOT_FOUNDSDK not installednpm install @elevenlabs/elevenlabs-js
Mock returns undefinedMock not wiredCheck vi.mock path matches import
Integration test failsNo API keySet ELEVENLABS_API_KEY in .env.local
Quota exceeded in devRunning real API callsUse mock layer; run npm run quota first

Examples

Four worked runs of the loop — full walkthroughs in references/examples.md:

  • Zero-cost unit tests — npm run test drives the service through the mock client, passes offline, and never touches the API or your quota.
  • Quota preflight — npm run quota prints Characters: 500 / 10,000 (5.0% used) and exits 1 when fewer than 1000 characters remain, blocking a paid run before it starts.
  • Opt-in integration run — npm run test:integration sets ELEVENLABS_INTEGRATION=1, flipping the it.skipIf(!useRealApi) test on so the real API is hit only when you ask for it.
  • Hot-reload iteration — npm run dev (tsx watch) restarts on save; with the dev model (eleven_flash_v2_5) and mocks, each loop stays fast and free.

Resources

Next Steps

Once the dev loop is running, move on to production-ready code: see the elevenlabs-sdk-patterns skill for streaming, retries, and voice-management patterns you can layer on top of this environment.

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in skills/.curated/elevenlabs-local-dev-loop of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • references/examples.md
  • references/implementation.md

Open the folder on GitHubat commit cfae287

Compare with similar skills

Elevenlabs Local Dev Loop 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.

Elevenlabs Local Dev Loop compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Elevenlabs Local Dev Loop this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1.4kAutomated safety check: NotesMIT
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Sound Effectstadaspetra/loop2962 repos~1.1kAutomated safety check: PassMIT
Elevenlabs Transcribeqdhenry/Claude-Command-Suite1.3k—~1.5kAutomated safety check: NotesNone
Dubbingelevenlabs/skills482—~3.3kAutomated safety check: PassMIT
Sagtrpc-group/trpc-agent-go1.9k15 repos~574Automated safety check: PassApache-2.0

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Works with

Categories

Questions about Elevenlabs Local Dev Loop

What does Elevenlabs Local Dev Loop do?

A skill your agent uses when setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking, hot reload, quota-aware iteration, and audio-output testing that does not…. Elevenlabs Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Use when setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking, hot reload, quota-aware iteration, and audio-output testing that does not burn character quota during development.

When should I use Elevenlabs Local Dev Loop?

Elevenlabs Local Dev Loop fits situations like: setting up a local ElevenLabs dev environment for a TTS/voice project and you need SDK mocking; quota-aware iteration; audio-output testing that does not burn character quota during development; with elevenlabs dev setup.

How do I install Elevenlabs Local Dev Loop in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill elevenlabs-local-dev-loop -a claude-code`. Or copy the skill folder (skills/.curated/elevenlabs-local-dev-loop in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/elevenlabs-local-dev-loop in your project. Claude Code loads it when a task matches its description.

How do I install Elevenlabs Local Dev Loop in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill elevenlabs-local-dev-loop -a codex`. Or copy the skill folder (skills/.curated/elevenlabs-local-dev-loop in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/elevenlabs-local-dev-loop in your project. Codex loads it when a task matches its description.

Can I use Elevenlabs Local Dev Loop 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 jeremylongshore/tons-of-skills-marketplace --skill elevenlabs-local-dev-loop -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/elevenlabs-local-dev-loop, .gemini/skills/elevenlabs-local-dev-loop, .github/skills/elevenlabs-local-dev-loop and .opencode/skills/elevenlabs-local-dev-loop in your project.

What does Elevenlabs Local Dev Loop need to run?

Going by SKILL.md and its folder, Elevenlabs Local Dev Loop needs the command-line tools its instructions call (npm and tsx) and credentials named ELEVENLABS_API_KEY. Our summary lists: Node.js; A credential in ELEVENLABS_API_KEY. Its frontmatter pre-approves these tools: Read, Write, Edit, Bash(npm:*), Bash(pnpm:*). Compatibility (from SKILL.md): Designed for Claude Code.

Does Elevenlabs Local Dev Loop access the network?

SKILL.md names 2 domains. As links in the text: github.com and vitest.dev. This is read from the text; nothing was executed.

Is Elevenlabs Local Dev Loop safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Elevenlabs Local Dev Loop use?

Elevenlabs Local Dev Loop is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Elevenlabs Local Dev Loop use?

About 1.4k tokens (SKILL.md is roughly 5.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.9k tokens, read only when the agent opens those files.

What are the alternatives to Elevenlabs Local Dev Loop?

Skills that share tags, products or a category with Elevenlabs Local Dev Loop: Music (tadaspetra/loop, 296 stars), Sound Effects (tadaspetra/loop, 296 stars), Elevenlabs Transcribe (qdhenry/Claude-Command-Suite, 1.3k stars) and Dubbing (elevenlabs/skills, 482 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Elevenlabs Local Dev Loop?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.