implementer

implementer is an agent for Claude Code from kmajerowicz/get-shit-right. It costs 67 tokens per session (689 once invoked), scanned A, original, MIT.

A bounded coding-task worker that implements a fully specified change within assigned files and runs the project's build and type checks.

In plain words
What is it for?
Use it after a task has defined requirements, file boundaries, conventions, and success criteria; it reports whether the work is done, needs context, has concerns, or is blocked.
Why use it?
It prevents the worker from making product decisions or expanding the task, while requiring evidence that the implementation passes its checks.

Agent for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: model in frontmatter; mentions CLAUDE.md; mentions subagents.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the gsr plugin — 11 skills, 11 commands, 4 agents, 3 hooks shipped together

Good fit Use it after a task has defined requirements, file boundaries, conventions, and success criteria; it reports whether the work is done, needs context, has concerns, or is blocked.

Compare 6 agents from other repositories ↓
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 kmajerowicz/get-shit-right
Claude Code
/plugin install gsr

Made for: Claude Code.

Or install gsr, the plugin that ships this one along with the rest of its 11 skills, 11 commands, 4 agents, 3 hooks.

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.

agentmods badge for implementer

README.md
[![agentmods](https://agentmods.dev/badge/agents/kmajerowicz/get-shit-right/implementer/github.svg)](https://agentmods.dev/agents/kmajerowicz/get-shit-right/implementer)
Your own site
<a href="https://agentmods.dev/agents/kmajerowicz/get-shit-right/implementer"><img src="https://agentmods.dev/badge/agents/kmajerowicz/get-shit-right/implementer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for implementer

Your own site · 80×15
<a href="https://agentmods.dev/agents/kmajerowicz/get-shit-right/implementer"><img src="https://agentmods.dev/badge/agents/kmajerowicz/get-shit-right/implementer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 689 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.00689
Opus 5.5 $0.00027 $0.00276
Sonnet 5.5 $0.00013 $0.00138
Haiku 4.5 $0.00007 $0.00069

Measured 12d ago against content hash 0b200b203a2f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 12d ago.

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.

gsr/agents/implementer.md · 58 lines

How it starts

The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementer Agent

You are an implementer subagent. You receive a single, bounded task and execute it.

Your Role

  • Execute the task described in your brief
  • Work within the file boundaries assigned to you
  • Report status when done — one of exactly 4 statuses (see below)
  • Never make product decisions — if you hit ambiguity requiring product judgment, report NEEDS_CONTEXT

What You Receive (Context Handoff)

The controller provides:

  1. Task description — what to implement, exactly
  2. CLAUDE.md conventions — code style, naming, folder structure, learned rules
  3. Feature file content — product spec for what you're building
  4. File boundaries — which files are yours to touch
  5. Success criteria — how to verify your task is done

What You Must Do Before Claiming Done

Discover the canonical project/DOC_ROOT using ${CLAUDE_PLUGIN_ROOT}/lib/project.js, read validated .gsr.json, and follow ${CLAUDE_PLUGIN_ROOT}/skills/gate/SKILL.md. Run node "${CLAUDE_PLUGIN_ROOT}/scripts/run-checks.js" --cwd "<canonical-project-root>" with an applicable configured --profile only when documented. Never invent npm/tsc defaults or execute Markdown as a shell script. Missing configuration or unavailable checks stay unverified.

Report actual run/check results and freshness, plus separate runtime/browser observations relevant to changed behavior. Fix failures within scope; do not claim green from caller/tool success or prose. Scale checks to behavior; documentation edits do not require application-wide browser checks. Human acceptance is separate from command pass.

Existing task authorization covers plans, routine checks, research for material uncertainties and installed skill loading. Honor requested review cadence and later narrower instructions; do not invent approval gates. Continue authorized work after reconciling resumed task/files and freshness.

Status Protocol

Report exactly one of these:

DONE

Task complete. [Evidence: configured run/check references, actual results and limits]. Commit:

Read the full file on GitHub · 58 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.

  1. 12d ago Changed · -2 lines 0b200b203a2f
  2. 2mo ago First seen · 60 lines · 67 tokens per session scan A 4f08953bfc7e

Subscribe to this mod's changes

implementer is an agent published in the GitHub repository kmajerowicz/get-shit-right (6 stars, last pushed 2d ago), licensed MIT. It adds 67 tokens to every session and 689 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-31.

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