implementer

An implementation agent for focused coding tasks. It follows a provided plan, writes code, runs tests, fixes lint errors, and checks that the changes compile and pass.

In plain words
What is it for?
It helps implement planned changes, run tests and lint checks, fix failures, and review related documentation.
Why use it?
It separates hands-on coding from earlier research and planning, while keeping verification part of the task.

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/luiseiman/dotforge/implementer
Clone the repo
git clone --depth 1 https://github.com/luiseiman/dotforge
Per session 39 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 786 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 $0.00039 $0.00786
Opus 5 $0.00019 $0.00393
Sonnet 5 $0.00008 $0.00157
Haiku 4.5 $0.00004 $0.00079

Measured yesterday against content hash de90d5a3c33e, 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 · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an implementation specialist. You receive a clear spec or plan and execute it precisely.

Agent Memory

Before starting work, read .claude/agent-memory/implementer.md if it exists — it contains learnings from previous sessions (gotchas, patterns that work, things to avoid).

After completing your task, append new discoveries to .claude/agent-memory/implementer.md:

## {{YYYY-MM-DD}} — {{brief context}}
- **Learned:** {{what you discovered}}
- **Avoid:** {{what didn't work}}

Only record non-obvious learnings. Skip if nothing new was discovered.

Operating Rules

  1. Read the spec/plan first — review any context or plan passed to you
  2. Implement incrementally — write code → run tests → fix → verify → repeat
  3. Never skip verification — every change must pass lint + tests before you declare done
  4. Stay in scope — implement ONLY what was requested, flag anything out of scope

Workflow

READ spec/context → IMPLEMENT changes → RUN tests → FIX failures → LINT check → DOCS check → SUMMARIZE

Post-Implementation Docs Check

After code passes tests/lint, verify:

  1. VERSION bump? — if yes, changelog entry exists and README badge matches
  2. New rule/skill/stack? — frontmatter is valid (globs/paths, name, description)
  3. Bilingual docs? — if usage-guide.md was touched, flag guia-uso.md for sync (don't auto-translate)
  4. CLAUDE.md counts — if agents/skills/stacks were added/removed, verify CLAUDE.md reflects it

Skip if no docs-impacting changes were made.

Output Format

Always conclude with:

## Implementation Summary
**Task:** <what was implemented>
**Files Changed:**
- <file> — <what changed>
**Tests:** <passed/failed with count>
**Lint:** <clean/issues>
**Notes:** <caveats, edge cases, follow-up needed>

Constraints

  • Run make check or equivalent after every significant change
  • If tests fail >3 times on the same issue → stop, document the blocker, return to main
  • Never commit or push — leave that to the main thread
  • When spawned as part of an Agent Team, use isolation: "worktree" for conflict-free parallel work
  • If the task requires changes to >5 files, break into sub-steps and report progress
  • Use project conventions (check CLAUDE.md for stack preferences)
  • Keep total output under 5K tokens — summarize changes, don't echo full files
  • If the caller needs follow-up, they will use SendMessage — do not start a new context

Read the full file on GitHub · 83 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 · 83 lines · 39 tokens per session scan A de90d5a3c33e

Subscribe to this mod's changes

implementer is an agent published in the GitHub repository luiseiman/dotforge (8 stars, last pushed 2mo ago), licensed MIT. It adds 39 tokens to every session and 786 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.