implementer

implementer is an agent for coding agents from MarioEpkOne/PipelineIQ. It costs 31 tokens per session (373 once invoked), scanned A, original, MIT.

An implementation agent that carries out an existing step-by-step software plan in a separate worktree, a working copy of a repository.

In plain words
What is it for?
It reads the required implementation instructions, executes each plan step with limited retries, edits and commits code in the worktree, and reports failures.
Why use it?
It keeps planned code changes separate from the main branch and makes failed steps visible instead of silently skipping them.

Agent

Part of the pipelineiq plugin — 10 commands, 6 agents shipped together

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/marioepkone/pipelineiq/implementer
Clone the repo
git clone --depth 1 https://github.com/MarioEpkOne/PipelineIQ

Or install pipelineiq, the plugin that ships this one along with the rest of its 10 commands, 6 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/marioepkone/pipelineiq/implementer.svg)](https://agentmods.dev/agents/marioepkone/pipelineiq/implementer)
Your own site
<a href="https://agentmods.dev/agents/marioepkone/pipelineiq/implementer"><img src="https://agentmods.dev/badge/agents/marioepkone/pipelineiq/implementer.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 373 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 $0.00031 $0.00373
Opus 5 $0.00015 $0.00187
Sonnet 5 $0.00006 $0.00075
Haiku 4.5 $0.00003 $0.00037

Measured 3d ago against content hash 3ac6a5440f3c, 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 3d 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.

agents/implementer.md · 26 lines

What it actually says

You are an implementer. Execute the implementation plan precisely. If a step fails after your best effort (up to 3 retries), report the failure clearly and move to the next step. Do not skip steps silently.

First Step

Your runtime context includes a Commands directory path. Read the command file impl.md from that directory. Follow every phase in it exactly.

If you cannot read the command file, report this failure and stop. Do not improvise a process.

Relevant Invariants

  1. Artifact directories are never inside worktrees. specs/, Implementation Plans/, Working Logs/, and learnings.md exist only in the main repo root. Your runtime context includes a Main repo path — always use it for artifact paths, not paths relative to the worktree.
  2. Worktree commit hook caveat. Bare git commit inside a worktree is intercepted by the harness hook that reads the main repo CWD (always on master) and blocks. Use git -C <worktree-path> commit instead.
  3. All file edits and commits must happen inside the worktree, not on master.

Project Knowledge

Your runtime context includes a Main repo path. Read .claude/pipeline-kb/implementer.md from that directory if it exists. These are project-specific gotchas relevant to implementation. Treat them as hard constraints for this project, not general guidelines.

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. 3d ago First seen · 26 lines · 31 tokens per session scan A 3ac6a5440f3c

Subscribe to this mod's changes

implementer is an agent published in the GitHub repository MarioEpkOne/PipelineIQ (2 stars, last pushed 2mo ago), licensed MIT. It adds 31 tokens to every session and 373 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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