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Agent skill

Implementer

by keli-wen in keli-wen/agy-staff

Delegate a coding task to Google's Antigravity CLI (agy staffer, fast Gemini), which edits the working tree directly and can perform explicitly requested Git delivery.

MITAuto-check passedDevelopment

Install Implementer

skills CLI
$ npx skills add keli-wen/agy-staff --skill implementer -a claude-code

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

GitHub CLI
$ gh skill install keli-wen/agy-staff implementer --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/keli-wen/agy-staff.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/implementer .claude/skills/implementer && 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
implementer
GitHub stars
723
Token cost
~1.1k tokens
SKILL.md length
531 words
Files
1
Skills in repo
13
Repo updated
First seen
Licence
MIT

At a glance

Delegate a coding task to Google's Antigravity CLI (agy staffer, fast Gemini), which edits the working tree directly and can perform explicitly requested Git delivery.

  • The user says /agy:implementer
  • SKILL.md covers Locating the companion, Workspace and delivery, Collecting the result and Flags (all optional), plus 1 more section
  • Calls node and git
  • Have agy fix/build X

What it does

Implementer is an agent skill from keli-wen/agy-staff. Delegate a coding task to Google's Antigravity CLI (agy staffer, fast Gemini), which edits the working tree directly and can perform explicitly requested Git delivery. Use when the user says /agy:implementer, "have agy fix/build X", or wants to hand a well-scoped coding task to the agy staffer instead of doing it in the host model.

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.

It sits in Development. It works with Git. The repository describes itself as: Hire Google's Antigravity CLI (agy) as a fast Gemini staffer for Claude Code and OpenAI Codex. The licence is MIT.

When your agent uses it

  • The user says /agy:implementer
  • Have agy fix/build X
  • Wants to hand a well-scoped coding task to the agy staffer instead of doing it in the host model

Example prompts

  • “have agy fix/build X”
  • “/implementer”

Requirements

  • Pre-approved tools (allowed-tools): Read, Glob, Grep, Bash(node:*), Bash(git:*), Bash(gh:*)

What it can do on your machine

Read from SKILL.md and the folder at commit 9a30e07. 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
    • Glob
    • Grep
    • Bash(node:*)
    • Bash(git:*)
    • Bash(gh:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • node
    • git

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

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

    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

Implementer loads about 1.1k tokens when it runs. Until then it costs about 86 tokens; SKILL.md has 531 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~86
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

The full file from keli-wen/agy-staff at commit 9a30e07, republished under its MIT licence (© keli-wen). 531 words, ~1,094 tokens.

Download SKILL.mdSave it as .claude/skills/implementer/SKILL.md (or your agent's skills folder).
name
implementer
description
Delegate a coding task to Google's Antigravity CLI (agy staffer, fast Gemini), which edits the working tree directly and can perform explicitly requested Git delivery. Use when the user says /agy:implementer, "have agy fix/build X", or wants to hand a well-scoped coding task to the agy staffer instead of doing it in the host model.
allowed-tools
Read, Glob, Grep, Bash(node:*), Bash(git:*), Bash(gh:*)
argument-hint
[--continue] [--restricted|--unrestricted] [--model <id>|--effort low|medium|high] [--prompt-file <path>|--stdin] "task description"

agy implementer

Hand a coding task to the agy staffer. agy edits the real working tree under its unrestricted permission profile; the companion is a thin launcher and job collector. Pass the user's requested delivery through in the task text instead of doing Git work yourself.

Locating the companion

This skill file lives at <plugin-root>/skills/implementer/SKILL.md; resolve the companion path relative to this skill directory:

bash
node "<skill-dir>/../../companion/agy-companion.mjs" implement [flags] --prompt "task description"

Pass the user's task description verbatim via --prompt; use --prompt-file <path> or --stdin for long text.

[!IMPORTANT] Run this command unsandboxed — agy needs a localhost port and its OAuth token file, which harness sandboxes hide. In Codex, request escalated permissions for the command. Details: ../jobs/references/troubleshooting.md. (The companion passes --dangerously-skip-permissions to agy in this mode — that is the unrestricted profile working as designed.)

Workspace and delivery

  • Inside a git repository, dirty workspaces are allowed. When git status --porcelain is not clean, the companion injects a bounded pre-run status summary into the implement prompt so agy treats those paths as user-owned context.
  • Outside a git repository the companion warns that agy's edits cannot be reviewed or rolled back via git, and proceeds. Relay that warning; there is no diff to fall back on.
  • By default, agy leaves a working-tree diff. If the user explicitly asks for a commit, push, or PR, include that request verbatim in the task text and let agy do that exact Git delivery.
  • After the run, surface agy's summary and the current workspace state. Do not add your own commit/PR step unless the user separately asks you to do it.

Collecting the result

The command returns a job id. Read ../jobs/SKILL.md for result collection and recovery: dispatch, wait for the final result, then validate as needed. Do not proactively observe progress, read logs or inspect intermediate artifacts while running. Observe only when the user explicitly asks for progress; diagnose a failure or a result requiring intervention under the jobs protocol.

Show full SKILL.md (215 more words)Show less

Flags (all optional)

  • --restricted / --unrestricted — permission profile. implement defaults to unrestricted, so it works out of the box with no setup. --restricted is the opt-in hardening path: agy may then only use allowlisted tools, so it can usually only propose rather than edit, and it needs the setup flow's evidence-gathering allowlist to be useful.
  • --continue (or --conversation <id>), --model <id> / --effort low|medium|high (default gemini-3.8-flash-high), --timeout <dur> (default 60m, maximum 120m hard execution limit).
  • --prompt <text> / --prompt-file <path> / --stdin — the task, from exactly one of these three sources. Use file/stdin for long prompts.

Rules

  • Do not pre-implement, extend, or "clean up" agy's changes without user confirmation.
  • Return agy's summary verbatim before presenting the diff.
  • Pass the user's explicit authorizations through to the task string verbatim. The prompt template default-denies costly or irreversible side effects; that default opens only when the request itself asks for the operation — so keep "open a draft PR", "run the e2e tests", or "call the staging API" in the prompt instead of trimming it.
  • Never commit agy's changes yourself unless the user explicitly asks you, the host agent, to do it.
  • For errors and recovery, follow ../jobs/SKILL.md.

For an existing conversation, --continue / --conversation <id> inherit its recorded model and permission profile unless explicitly overridden. The unrestricted defaults above apply to new tasks.

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

Files

Just SKILL.md in skills/implementer of keli-wen/agy-staff.

Open the folder on GitHubat commit 9a30e07

Compare with similar skills

Implementer 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.

Implementer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Implementer this skillkeli-wen/agy-staff723—~1.1kAutomated safety check: PassMIT
Finishing a Development Branchobra/superpowers296k5 repos~1.9kAutomated safety check: PassMIT
Code Review ChecklistshareAI-lab/learn-claude-code78k5 repos~1.1kAutomated safety check: PassMIT
Codebase Knowledge Graph Q&AEgonex-AI/Understand-Anything85k1 repos~1.2kAutomated safety check: PassMIT
Code Design Rationale Investigatorcursor/plugins10k9 repos~2.6kAutomated safety check: PassNone
Understand Diff AnalysisEgonex-AI/Understand-Anything85k1 repos~1.4kAutomated safety check: PassMIT

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Works with

Categories

Questions about Implementer

What does Implementer do?

Delegate a coding task to Google's Antigravity CLI (agy staffer, fast Gemini), which edits the working tree directly and can perform explicitly requested Git delivery. Implementer is an agent skill from keli-wen/agy-staff. Delegate a coding task to Google's Antigravity CLI (agy staffer, fast Gemini), which edits the working tree directly and can perform explicitly requested Git delivery.

When should I use Implementer?

Implementer fits situations like: the user says /agy:implementer; have agy fix/build X; wants to hand a well-scoped coding task to the agy staffer instead of doing it in the host model.

How do I install Implementer in Claude Code?

Run `npx skills add keli-wen/agy-staff --skill implementer -a claude-code`. Or copy the skill folder (skills/implementer in keli-wen/agy-staff) into .claude/skills/implementer in your project. Claude Code loads it when a task matches its description.

How do I install Implementer in Codex?

Run `npx skills add keli-wen/agy-staff --skill implementer -a codex`. Or copy the skill folder (skills/implementer in keli-wen/agy-staff) into .agents/skills/implementer in your project. Codex loads it when a task matches its description.

Can I use Implementer 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 keli-wen/agy-staff --skill implementer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/implementer, .gemini/skills/implementer, .github/skills/implementer and .opencode/skills/implementer in your project.

What does Implementer need to run?

Going by SKILL.md and its folder, Implementer needs the command-line tools its instructions call (node and git). Its frontmatter pre-approves these tools: Read, Glob, Grep, Bash(node:*), Bash(git:*), Bash(gh:*).

Does Implementer access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Implementer 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 Implementer use?

Implementer 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 Implementer use?

About 1.1k tokens (SKILL.md is roughly 4.4k 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 Implementer?

Skills that share tags, products or a category with Implementer: Finishing a Development Branch (obra/superpowers, 296k stars), Code Review Checklist (shareAI-lab/learn-claude-code, 78k stars), Codebase Knowledge Graph Q&A (Egonex-AI/Understand-Anything, 85k stars) and Code Design Rationale Investigator (cursor/plugins, 10k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Implementer?

keli-wen (a GitHub user) maintains it in keli-wen/agy-staff, which has 723 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on October 6, 2026.

Source: keli-wen/agy-staff on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.