Agent skill

Revyl Codex Dev Loop

by RevylAI in RevylAI/revyl-cli

Run, preview, debug, and verify mobile app changes on Revyl cloud devices from Codex, with screenshots and semantic validation.

No licenceAuto-check passed

Install Revyl Codex Dev Loop

skills CLI
$ npx skills add RevylAI/revyl-cli --skill revyl-codex-dev-loop -a claude-code

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

GitHub CLI
$ gh skill install RevylAI/revyl-cli revyl-codex-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/RevylAI/revyl-cli.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/revyl/skills/revyl-codex-dev-loop .claude/skills/revyl-codex-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
revyl-codex-dev-loop
GitHub stars
522
Token cost
~1.1k tokens
SKILL.md length
489 words
Files
1
Skills in repo
20
Repo updated
First seen
Licence
None found

At a glance

Run, preview, debug, and verify mobile app changes on Revyl cloud devices from Codex, with screenshots and semantic validation.

  • SKILL.md covers Launcher and setup, Authorization and selection and Detailed CLI mechanics
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Revyl Codex Dev Loop is an agent skill from RevylAI/revyl-cli. Run, preview, debug, and verify mobile app changes on Revyl cloud devices from Codex, with screenshots and semantic validation.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

Example prompts

  • “/revyl-codex-dev-loop”

What it can do on your machine

Read from SKILL.md and the folder at commit a860206. 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

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

    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

Revyl Codex Dev Loop loads about 1.1k tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 489 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~37
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 489 words (~1,075 tokens).

“Use this skill for an authorized Revyl development loop in Codex. This plugin has no hooks and no MCP server. Installation never changes an app's source or .revyl/config.yaml; later source/configuration work is allowed only when the task explicitly requires it…”

— opening of SKILL.md by RevylAI
name
revyl-codex-dev-loop

Read the full SKILL.md on GitHub

Files

Just SKILL.md in plugins/revyl/skills/revyl-codex-dev-loop of RevylAI/revyl-cli.

Open the folder on GitHubat commit a860206

Compare with similar skills

Revyl Codex 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.

Revyl Codex Dev Loop compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Revyl Codex Dev Loop this skillRevylAI/revyl-cli522—~1.1kAutomated safety check: PassNone
Debugasgeirtj/system_prompts_leaks69k—~439Automated safety check: PassCC0-1.0
Openclaw Debuggingopenclaw/openclaw392k—~1.9kAutomated safety check: PassMIT
Debugging Executionsn8n-io/n8n207k—~2.6kAutomated safety check: PassCustom licence
Debugging Toolkitsickn33/agentic-awesome-skills47k1 repos~344Automated safety check: PassMIT
Debugging Output And Previewing HTML Using Rayanonaddy/anonaddy4.9k—~2.3kAutomated safety check: PassAGPL-3.0

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Questions about Revyl Codex Dev Loop

What does Revyl Codex Dev Loop do?

Run, preview, debug, and verify mobile app changes on Revyl cloud devices from Codex, with screenshots and semantic validation. Revyl Codex Dev Loop is an agent skill from RevylAI/revyl-cli. Run, preview, debug, and verify mobile app changes on Revyl cloud devices from Codex, with screenshots and semantic validation.

How do I install Revyl Codex Dev Loop in Claude Code?

Run `npx skills add RevylAI/revyl-cli --skill revyl-codex-dev-loop -a claude-code`. Or copy the skill folder (plugins/revyl/skills/revyl-codex-dev-loop in RevylAI/revyl-cli) into .claude/skills/revyl-codex-dev-loop in your project. Claude Code loads it when a task matches its description.

How do I install Revyl Codex Dev Loop in Codex?

Run `npx skills add RevylAI/revyl-cli --skill revyl-codex-dev-loop -a codex`. Or copy the skill folder (plugins/revyl/skills/revyl-codex-dev-loop in RevylAI/revyl-cli) into .agents/skills/revyl-codex-dev-loop in your project. Codex loads it when a task matches its description.

Can I use Revyl Codex 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 RevylAI/revyl-cli --skill revyl-codex-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/revyl-codex-dev-loop, .gemini/skills/revyl-codex-dev-loop, .github/skills/revyl-codex-dev-loop and .opencode/skills/revyl-codex-dev-loop in your project.

What does Revyl Codex Dev Loop need to run?

SKILL.md names no scripts, command-line tools or credentials: Revyl Codex Dev Loop is instructions for the agent only.

Does Revyl Codex Dev Loop 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 Revyl Codex 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 Revyl Codex Dev Loop use?

No licence was found for Revyl Codex Dev Loop or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Revyl Codex Dev Loop use?

About 1.1k tokens (SKILL.md is roughly 4.3k 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 Revyl Codex Dev Loop?

Skills that share tags, products or a category with Revyl Codex Dev Loop: Debug (asgeirtj/system_prompts_leaks, 69k stars), Openclaw Debugging (openclaw/openclaw, 392k stars), Debugging Executions (n8n-io/n8n, 207k stars) and Debugging Toolkit (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Revyl Codex Dev Loop?

RevylAI (a GitHub organization) maintains it in RevylAI/revyl-cli, which has 522 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on October 7, 2026.

Source: RevylAI/revyl-cli on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.