A task handoff tool that sends a clearly defined coding job to Google's Antigravity command-line tool, which edits the current project files and can carry out requested Git delivery.

Use it to ask Antigravity to build or fix something in a Git project, including work that may need to be delivered through Git.

It lets you assign a focused implementation task to another coding agent instead of completing it yourself. The tool also collects the agent's result.

implementer — Skill for Claude Code by keli-wen: A task handoff tool that sends a clearly defined…

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code

/plugin marketplace add keli-wen/agy-staff

Claude Code

/plugin install agy

Made for: Claude Code.

Or install agy, the plugin that ships this one along with the rest of its 12 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/keli-wen/agy-staff/implementer.svg)](https://agentmods.dev/skills/keli-wen/agy-staff/implementer)

Your own site

<a href="https://agentmods.dev/skills/keli-wen/agy-staff/implementer"><img src="https://agentmods.dev/badge/skills/keli-wen/agy-staff/implementer.svg" alt="Measured on agentmods" height="20"></a>

Per session 79 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,052 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00079	$0.01052
Opus 5	$0.00039	$0.00526
Sonnet 5	$0.00016	$0.00210
Haiku 4.5	$0.00008	$0.00105

Measured yesterday against content hash 8371e3af0adf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

implementer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

agy-implementer — 86% identical, 22 lines differ

skills/implementer/SKILL.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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:

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.

Execution style

implement always runs as a background job: the call returns a job id immediately. The job never calls back — collecting the result is your job.

Collecting the result

Read the full file on GitHub · 53 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday Changed 8371e3af0adf
6d ago First seen · 53 lines · 79 tokens per session scan A d31f1ad1b59c

Subscribe to this mod's changes

implementer is a skill published in the GitHub repository keli-wen/agy-staff (89 stars, last pushed yesterday), licensed MIT. It adds 79 tokens to every session and 1,052 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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implementer