Agent skill

Skill Lifecycle

by ceilf6 in ceilf6/FrontAgent

Create, evaluate, improve, and benchmark content skills using the local Skill Lab workflow.

MITAuto-check passedAI & LLM Engineering

Install Skill Lifecycle

skills CLI
$ npx skills add ceilf6/FrontAgent --skill skill-lifecycle -a claude-code

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

GitHub CLI
$ gh skill install ceilf6/FrontAgent skill-lifecycle --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/ceilf6/FrontAgent.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/skill-lifecycle .claude/skills/skill-lifecycle && 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
skill-lifecycle
GitHub stars
120
Token cost
~747 tokens
SKILL.md length
308 words
Files
5 (incl. references)
Skills in repo
4
Repo updated
First seen
Licence
MIT

At a glance

Create, evaluate, improve, and benchmark content skills using the local Skill Lab workflow.

  • Works in 8 steps: Read references/workflow.md to choose… → Read references/eval-guidelines.md… → If the skill does not exist yet,… → …
  • Adding a new skill
  • SKILL.md covers Trigger, Workflow, Output Contract and Guardrails
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Skill Lifecycle is an agent skill from ceilf6/FrontAgent. Create, evaluate, improve, and benchmark content skills using the local Skill Lab workflow. Use when adding a new skill, tuning an existing skill's trigger behavior, iterating on SKILL.md instructions, or deciding whether a candidate skill should replace the current version.

Its SKILL.md is about 750 tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `ADAPTATION.md`, `agents/openai.yaml` and `references/eval-guidelines.md`).

It sits in AI & LLM Engineering, covering LLM evaluation. The repository describes itself as: Frontend AI coding agent platform with CLI, VS Code extension, desktop app, MCP server, RAG planning, Skills, SDD guardrails, browser automation, and LoRA planner models |…. The licence is MIT.

When your agent uses it

  • Adding a new skill
  • Tuning an existing skills trigger behavior
  • Iterating on SKILL.md instructions
  • Deciding whether a candidate skill should replace the current version

Example prompts

  • “/skill-lifecycle”

Workflow steps

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

  1. Read references/workflow.md to choose the right Skill Lab sequence.
  2. Read references/eval-guidelines.md before creating or editing trigger evals.
  3. If the skill does not exist yet, scaffold a new skill package (e.g. frontagent skill scaffold ).
  4. If the skill does not yet have evals, initialize trigger evals (e.g. frontagent skill init-evals ).
  5. If behavior quality matters, initialize behavior evals (e.g. frontagent skill init-behavior-evals ).
  6. Run a benchmark before making changes (e.g. frontagent skill benchmark ). Use --behavior when behavior evals are available.
  7. When improvement is requested, generate a candidate and compare it with baseline (e.g. frontagent skill improve ). Use --behavior to…
  8. Only apply a candidate when the benchmark clearly improves and the user wants promotion (e.g. frontagent skill promote or…

What it can do on your machine

Read from SKILL.md and the folder at commit e78cbed. 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.

    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

Skill Lifecycle loads about 747 tokens when it runs, and up to ~1.5k if it reads all its reference files. Until then it costs about 73 tokens; SKILL.md has 308 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~73
When it runs · the whole SKILL.md, loaded when a task matches
~747
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.5k

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 ceilf6/FrontAgent at commit e78cbed, republished under its MIT licence (© ceilf6). 308 words, ~747 tokens.

Download SKILL.mdSave it as .claude/skills/skill-lifecycle/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
skill-lifecycle
description
Create, evaluate, improve, and benchmark content skills using the local Skill Lab workflow. Use when adding a new skill, tuning an existing skill's trigger behavior, iterating on SKILL.md instructions, or deciding whether a candidate skill should replace the current version.
triggers.explicit
$skill-lifecycle, skill-lifecycle
triggers.keywords
create a skill, new skill, improve this skill, benchmark this skill, tune skill triggers, 迭代技能, 优化技能, 评测技能, 创建技能
triggers.negative
review code, bugfix, 普通页面开发
license
Inspired by Claude skill-creator concepts

Skill Creator

Use this skill when the user wants to work on content skills themselves — creating, evaluating, improving, or benchmarking them.

Trigger

  • Requests to create a new content skill
  • Requests to improve or benchmark an existing skill
  • Requests to reduce false positives or false negatives in skill triggering
  • Requests to compare the current skill against a revised candidate

Workflow

  1. Read references/workflow.md to choose the right Skill Lab sequence.
  2. Read references/eval-guidelines.md before creating or editing trigger evals.
  3. If the skill does not exist yet, scaffold a new skill package (e.g. frontagent skill scaffold <skill-name>).
  4. If the skill does not yet have evals, initialize trigger evals (e.g. frontagent skill init-evals <skill-name>).
  5. If behavior quality matters, initialize behavior evals (e.g. frontagent skill init-behavior-evals <skill-name>).
  6. Run a benchmark before making changes (e.g. frontagent skill benchmark <skill-name>). Use --behavior when behavior evals are available.
  7. When improvement is requested, generate a candidate and compare it with baseline (e.g. frontagent skill improve <skill-name>). Use --behavior to include behavior scoring.
  8. Only apply a candidate when the benchmark clearly improves and the user wants promotion (e.g. frontagent skill promote <skill-name> <candidate-id> or --apply-if-better).

Platform-specific commands listed above use the frontagent skill CLI. See ADAPTATION.md for how to map these steps to a different platform.

Output Contract

  • Keep the user informed of:
    • where eval files live
    • where candidate skills were written
    • whether benchmark scores improved
  • Prefer benchmark-backed recommendations over intuition.
  • Treat the skill package itself as the artifact under iteration:
    • SKILL.md
    • agents/openai.yaml
    • existing references/ and assets/

Guardrails

  • Do not trust starter evals blindly. Encourage editing them toward real prompts before strong conclusions.
  • Do not auto-apply candidates unless the user requested it or the command explicitly says to do so.
  • Do not silently broaden a skill's scope just to improve trigger rate.
  • Prefer preserving existing references/assets over inventing new file paths.

© ceilf6, 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 4 other files (references) in skills/skill-lifecycle of ceilf6/FrontAgent.

  • SKILL.md
  • ADAPTATION.md
  • agents/openai.yaml
  • references/eval-guidelines.md
  • references/workflow.md

Open the folder on GitHubat commit e78cbed

Compare with similar skills

Skill Lifecycle 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.

Skill Lifecycle compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Skill Lifecycle this skillceilf6/FrontAgent120—~747Automated safety check: PassMIT
LLM Benchmarking with lm-evaluation-harnessOrchestra-Research/AI-Research-SKILLs13k8 repos~3kAutomated safety check: PassMIT
Azure AI Projects Python SDKmicrosoft/skills3.1k6 repos~2.8kAutomated safety check: PassMIT
Fine-Tuning ExpertJeffallan/claude-skills12k1 repos~1.7kAutomated safety check: PassMIT
Looperksimback/looper710—~2.7kAutomated safety check: NotesMIT
Hugging Face Local Model Evalshuggingface/skills11k2 repos~1.6kAutomated safety check: PassApache-2.0

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Questions about Skill Lifecycle

What does Skill Lifecycle do?

Create, evaluate, improve, and benchmark content skills using the local Skill Lab workflow. Skill Lifecycle is an agent skill from ceilf6/FrontAgent. Create, evaluate, improve, and benchmark content skills using the local Skill Lab workflow.

When should I use Skill Lifecycle?

Skill Lifecycle fits situations like: adding a new skill; tuning an existing skills trigger behavior; iterating on SKILL.md instructions; deciding whether a candidate skill should replace the current version.

How do I install Skill Lifecycle in Claude Code?

Run `npx skills add ceilf6/FrontAgent --skill skill-lifecycle -a claude-code`. Or copy the skill folder (skills/skill-lifecycle in ceilf6/FrontAgent) into .claude/skills/skill-lifecycle in your project. Claude Code loads it when a task matches its description.

How do I install Skill Lifecycle in Codex?

Run `npx skills add ceilf6/FrontAgent --skill skill-lifecycle -a codex`. Or copy the skill folder (skills/skill-lifecycle in ceilf6/FrontAgent) into .agents/skills/skill-lifecycle in your project. Codex loads it when a task matches its description.

Can I use Skill Lifecycle 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 ceilf6/FrontAgent --skill skill-lifecycle -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/skill-lifecycle, .gemini/skills/skill-lifecycle, .github/skills/skill-lifecycle and .opencode/skills/skill-lifecycle in your project.

What does Skill Lifecycle need to run?

SKILL.md names no scripts, command-line tools or credentials: Skill Lifecycle is instructions for the agent only.

Does Skill Lifecycle 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 Skill Lifecycle 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 Skill Lifecycle use?

Skill Lifecycle 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 Skill Lifecycle use?

About 747 tokens (SKILL.md is roughly 3k 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 734 tokens, read only when the agent opens those files.

What are the alternatives to Skill Lifecycle?

Skills that share tags, products or a category with Skill Lifecycle: LLM Benchmarking with lm-evaluation-harness (Orchestra-Research/AI-Research-SKILLs, 13k stars), Azure AI Projects Python SDK (microsoft/skills, 3.1k stars), Fine-Tuning Expert (Jeffallan/claude-skills, 12k stars) and Looper (ksimback/looper, 710 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Skill Lifecycle?

ceilf6 (a GitHub user) maintains it in ceilf6/FrontAgent, which has 120 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on September 30, 2026.

Source: ceilf6/FrontAgent on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.