Agent skill

Retellai Local Dev Loop

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

Retell AI local dev loop — AI voice agent and phone call automation.

MITAuto-check passedAI & LLM Engineering

Install Retellai Local Dev Loop

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill retellai-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 retellai-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/retellai-local-dev-loop .claude/skills/retellai-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
retellai-local-dev-loop
GitHub stars
2.8k
Token cost
~513 tokens
SKILL.md length
161 words
Files
2 (incl. references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Retell AI local dev loop — AI voice agent and phone call automation.

  • Working with Retell AI for voice agents
  • SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 4 more sections
  • Needs RETELL_API_KEY
  • With phrases like retell local dev loop

What it does

Retellai Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Retell AI local dev loop — AI voice agent and phone call automation. Use when working with Retell AI for voice agents, phone calls, or telephony. Trigger with phrases like "retell local dev loop", "retellai-local-dev-loop", "voice agent".

Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/dev-setup.md`). Compatibility notes: Designed for Claude Code

It sits in AI & LLM Engineering, covering Speech recognition and synthesis. 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

  • Working with Retell AI for voice agents
  • With phrases like retell local dev loop
  • Retellai-local-dev-loop

Example prompts

  • “retell local dev loop”
  • “retellai-local-dev-loop”
  • “voice agent”
  • “/retellai-local-dev-loop”

Requirements

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

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(curl:*)
    • Grep

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

    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):

    • docs.retellai.com
    • npmjs.com

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

  • Credentials

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

    • RETELL_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

Retellai Local Dev Loop loads about 513 tokens when it runs, and up to ~881 if it reads all its reference files. Until then it costs about 66 tokens; SKILL.md has 161 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~66
When it runs · the whole SKILL.md, loaded when a task matches
~513
With references · SKILL.md plus every file in references/, read only if the agent opens them
~881

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 jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 161 words, ~513 tokens.

Download SKILL.mdSave it as .claude/skills/retellai-local-dev-loop/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
retellai-local-dev-loop
description
Retell AI local dev loop — AI voice agent and phone call automation. Use when working with Retell AI for voice agents, phone calls, or telephony. Trigger with phrases like "retell local dev loop", "retellai-local-dev-loop", "voice agent".
allowed-tools
Read, Write, Edit, Bash(npm:*), Bash(curl:*), Grep
compatibility
Designed for Claude Code
version
1.9.0
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, retellai, voice, telephony, ai-agents

Retell AI Local Dev Loop

Overview

Implementation patterns for Retell AI local dev loop — voice agent and telephony platform.

Prerequisites

  • Completed retellai-install-auth setup

Instructions

Step 1: SDK Pattern
typescript
import Retell from 'retell-sdk';
const retell = new Retell({ apiKey: process.env.RETELL_API_KEY! });

const agents = await retell.agent.list();
console.log(`Agents: ${agents.length}`);

Output

  • Retell AI integration for local dev loop

Error Handling

ErrorCauseSolution
401 UnauthorizedInvalid API keyCheck RETELL_API_KEY
429 Rate LimitedToo many requestsImplement backoff
400 Bad RequestInvalid parametersCheck API documentation

Examples

Iterate on a prompt with a deterministic local test set

Keep a small suite of synthetic caller intents, including a successful request, an unclear request, and a required human handoff. Run that suite against a development agent after each prompt or tool-schema change and compare only redacted outcomes such as route, tool arguments, and completion state. Do not point local development at a production phone number; publish a versioned preview only after the suite continues to meet its expected behavior.

Resources

Next Steps

See related Retell AI skills for more workflows.

© 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 1 other file (references) in skills/.curated/retellai-local-dev-loop of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • references/dev-setup.md

Open the folder on GitHubat commit cfae287

Compare with similar skills

Retellai 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.

Retellai Local Dev Loop compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Retellai Local Dev Loop this skilljeremylongshore/tons-of-skills-marketplace2.8k—~513Automated safety check: PassMIT
TriageTalAter/annyang6.8k—~810Automated safety check: NotesMIT
Yichen Asrmcncarl/yichen-skills4.4k—~780Automated safety check: PassCustom licence
Dingtalk MinutesDingTalk-Real-AI/dingtalk-workspace-cli3.2k—~2.3kAutomated safety check: PassApache-2.0
Youtube FetcherJimmySadek/youtube-fetcher-to-markdown485—~3.1kAutomated safety check: PassMIT
Yichen Web Researchmcncarl/yichen-skills4.4k—~1.9kAutomated safety check: PassCustom licence

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Questions about Retellai Local Dev Loop

What does Retellai Local Dev Loop do?

Retell AI local dev loop — AI voice agent and phone call automation. Retellai Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Retell AI local dev loop — AI voice agent and phone call automation.

When should I use Retellai Local Dev Loop?

Retellai Local Dev Loop fits situations like: working with Retell AI for voice agents; with phrases like retell local dev loop; retellai-local-dev-loop.

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

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

How do I install Retellai Local Dev Loop in Codex?

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

Can I use Retellai 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 retellai-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/retellai-local-dev-loop, .gemini/skills/retellai-local-dev-loop, .github/skills/retellai-local-dev-loop and .opencode/skills/retellai-local-dev-loop in your project.

What does Retellai Local Dev Loop need to run?

Going by SKILL.md and its folder, Retellai Local Dev Loop needs credentials named RETELL_API_KEY. Our summary lists: A credential in RETELL_API_KEY. Its frontmatter pre-approves these tools: Read, Write, Edit, Bash(npm:*), Bash(curl:*), Grep. Compatibility (from SKILL.md): Designed for Claude Code.

Does Retellai Local Dev Loop access the network?

SKILL.md names 2 domains. As links in the text: docs.retellai.com and npmjs.com. This is read from the text; nothing was executed.

Is Retellai Local Dev Loop 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 Retellai Local Dev Loop use?

Retellai 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 Retellai Local Dev Loop use?

About 513 tokens (SKILL.md is roughly 2.1k 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 368 tokens, read only when the agent opens those files.

What are the alternatives to Retellai Local Dev Loop?

Skills that share tags, products or a category with Retellai Local Dev Loop: Triage (TalAter/annyang, 6.8k stars), Yichen Asr (mcncarl/yichen-skills, 4.4k stars), Dingtalk Minutes (DingTalk-Real-AI/dingtalk-workspace-cli, 3.2k stars) and Youtube Fetcher (JimmySadek/youtube-fetcher-to-markdown, 485 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Retellai 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.