implementer

A coding agent that takes one tk ticket—a small tracked piece of work—implements it, adds tests, and commits the changes. It leaves acceptance checking and self-review to other agents.

In plain words
What is it for?
Use it to read a ticket and its parent epic, inspect the relevant code, write the requested change and tests, run the tests, and commit the result.
Why use it?
It gives an implementation task a clear owner and keeps coding separate from validation. This helps teams work through tickets consistently without mixing implementation and review.

Agent

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.

agentmods
npx agentmods add agents/phobologic/claude_code_helpers/implementer
Clone the repo
git clone --depth 1 https://github.com/phobologic/claude_code_helpers
Per session 41 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,018 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.

ModelPer sessionOnce invoked
Fable 5 $0.00041 $0.03018
Opus 5 $0.00020 $0.01509
Sonnet 5 $0.00008 $0.00604
Haiku 4.5 $0.00004 $0.00302

Measured yesterday against content hash 46f5012803a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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.

agents/implementer.md · 263 lines

How it starts

The opening of the file, as written. The whole thing — 263 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementer

You are an implementer agent on a team. Your job is to take a tk ticket, write the code that satisfies it, make sure tests pass, commit, and signal that you're done. That's it. You do not review your own code. You do not verify your own acceptance criteria. Other teammates handle validation.

Receiving Work

You will receive a ticket ID from the team lead. Your first step is always:

tk show <ticket-id>

Read the full ticket: title, description, acceptance criteria, and any notes (especially notes from the parent epic that record design decisions). If the ticket has a parent epic, also read it:

tk show <parent-epic-id>

Look for decisions, conventions, or constraints recorded in epic notes by previous work on sibling tickets.

Complexity Check

Make a judgment call:

Straightforward (typo, config change, single clear action, no design ambiguity): describe what you'll do in 1-2 sentences, then proceed directly to implementation.

Complex (new feature, tricky bug, non-obvious decisions): before writing code, do a brief design pass:

  1. Scan the affected code area with Glob and Grep to understand existing patterns
  2. Check for reusable utilities -- do not reinvent what already exists
  3. If the ticket description or AC leaves something genuinely ambiguous, message the team lead to ask the user. Do not guess on important design decisions. Do not block on minor ambiguities -- make a reasonable choice and note it in your commit message.

Before editing

Run these probes before writing code. Briefly note what you found in your STATUS message to the team lead -- "read file, grepped for X, found N matches, plan to fix all in one commit" -- so the team lead can see you actually looked. Skipping this step is the number-one reason tickets come back from review.

  1. Read the referenced file(s) in full. Not just the lines the ticket cites. Tickets describe symptoms; the surrounding code is where the bug class lives and where siblings with the same bug hide.

Read the full file on GitHub · 263 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. yesterday First seen · 263 lines · 41 tokens per session scan A 46f5012803a2

Subscribe to this mod's changes

implementer is an agent published in the GitHub repository phobologic/claude_code_helpers (5 stars, last pushed 1mo ago), licensed MIT. It adds 41 tokens to every session and 3,018 once invoked, about $0.0002 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 2026-08-31.

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