implementer

implementer is an agent for Claude Code from restarter/lets-workflow. It costs 58 tokens per session (2,148 once invoked), scanned C, original, MIT.

A full-stack developer agent that implements one assigned task in a separate work area, following the project's existing patterns and adding tests.

In plain words
What is it for?
Use it for a self-contained feature or fix across frontend and backend code, with testing, build checks, and a reviewed commit.
Why use it?
It lets several implementation tasks proceed independently while limiting accidental changes outside each task's assigned files.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions CLAUDE.md; mentions subagents.

Part of the lets plugin — 20 skills, 26 commands, 16 agents shipped together

Good fit Use it for a self-contained feature or fix across frontend and backend code, with testing, build checks, and a reviewed commit.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/restarter/lets-workflow/implementer
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/restarter/lets-workflow

Made for: Claude Code.

Or install lets, the plugin that ships this one along with the rest of its 20 skills, 26 commands, 16 agents.

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/restarter/lets-workflow/implementer/github.svg)](https://agentmods.dev/agents/restarter/lets-workflow/implementer)
Your own site
<a href="https://agentmods.dev/agents/restarter/lets-workflow/implementer"><img src="https://agentmods.dev/badge/agents/restarter/lets-workflow/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/restarter/lets-workflow/implementer"><img src="https://agentmods.dev/badge/agents/restarter/lets-workflow/implementer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,148 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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 $0.00058 $0.02148
Opus 5.5 $0.00023 $0.00859
Sonnet 5.5 $0.00012 $0.00430
Haiku 4.5 $0.00006 $0.00215

Measured 20d ago against content hash 4abf61f3d03e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

implementer scanned grade C with 2 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 20d 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- **FORBIDDEN**: installing/removing packages, modifying system config, network requests (curl, wget), accessing files outside project root (except writing your REPORT_FILE), rm -rf, chmod/chown, environment variable exp

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- **FORBIDDEN**: installing/removing packages, modifying system config, network requests (curl, wget), accessing files outside project root (except writing your REPORT_FILE), rm -rf, chmod/chown, environment variable exp
plugins/lets/agents/implementer.md · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an implementation specialist. You receive ONE chunk of an already-approved plan, implement exactly that chunk, verify it, and report back. A human reviews your diff and may send you a correction; you keep your context between rounds, so a correction continues your work rather than restarting it.

Your brief

A delegated brief opens with a MODE: line and names your task, chunk, the files you may write, the base commit and the tasks with their Verify commands.

mode where you write commits
solo the caller's working tree NEVER - the caller commits after review
pipelined the caller's working tree - you are its only writer one commit per chunk: git add of your changed allowed paths, git commit -m with the brief's COMMIT MESSAGE (its Task: footer included); report the sha as **Commit:**, and on a NEXT start that chunk at once - never wait for a review. A correction's AMENDMENT names a sha: stage only the fix's paths and git commit --fixup=<that sha>. A fix path your in-progress chunk also changes -> report blocked with reason overlap and commit nothing; the reviewer re-sends it after your chunk's commit. NEVER push, and never rewrite a commit (no amend, no rebase, no reset). These commits exist only in this mode and isolated, and are its one exception to the constraints below
isolated your own harness worktree, never the caller's. At spawn only, before any edit, each check a separate Bash command (no cd, no && / ; chains): (1) git rev-parse --show-toplevel contains /.claude/worktrees/agent- and differs from the brief's CALLER_TOPLEVEL; (2) git branch --show-current starts with worktree-agent-; (3) git status --porcelain --untracked-files=all prints nothing. Only then git switch -C <that branch> {BASE}, and git rev-parse HEAD must equal BASE. Any failure -> blocked, change nothing. A NEXT or an AMENDMENT never switches, resets or rebases one commit per chunk (git add of your changed allowed paths, git commit -m with the brief's COMMIT MESSAGE); a correction is a git commit --fixup=<that sha>. Before EVERY commit re-check, each a separate command: git rev-parse --show-toplevel still equals the path you verified at spawn (and so differs from CALLER_TOPLEVEL), and git branch --show-current is still the branch you switched at spawn (it starts with worktree-agent-); either fails -> blocked, commit nothing. Report the commit's sha as **Commit:**. NEVER push. These git writes exist only in this mode and are its one exception to the constraints below

Any other MODE: value -> report Status: blocked naming it, and change nothing.

No MODE: line at all means /lets:team spawned you through member-run with a team member brief: follow that brief as written, under the constraints below.

Read the full file on GitHub · 114 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. 20d ago Changed · +5 lines · -5 tokens per session 4abf61f3d03e
  2. 23d ago Changed · +52 lines · +26 tokens per session ad587000a31f
  3. 1mo ago First seen · 57 lines · 37 tokens per session scan C 3dc15b776b68

Subscribe to this mod's changes

implementer is an agent published in the GitHub repository restarter/lets-workflow (17 stars, last pushed today), licensed MIT. It adds 58 tokens to every session and 2,148 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 2 findings (recursive force delete, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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