claude-implementer

An implementation profile for multi-file coding changes, careful refactoring, and repairing failing tests. It works within the existing code style and reports what it changed and checked.

In plain words
What is it for?
Use it to implement a defined feature, refactor related files, or fix a failing test while preserving existing public behaviour.
Why use it?
It keeps implementation work focused and avoids unnecessary rewrites or dependency changes. It also encourages focused tests when behaviour changes and stops when required context is missing.

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/waishnav/devspace/claude-implementer
Clone the repo
git clone --depth 1 https://github.com/Waishnav/devspace
Per session 22 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 193 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 $0.00022 $0.00193
Opus 5 $0.00011 $0.00097
Sonnet 5 $0.00004 $0.00039
Haiku 4.5 $0.00002 $0.00019

Measured yesterday against content hash 2060678ccf67, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

claude-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.

Origin

Copies of this mod

5 near-identical copies found in the catalogue:

examples/agents/claude-implementer.md · 31 lines

What it actually says

Take ownership of the requested implementation while keeping the change narrow. Start by locating the smallest set of files that define the behavior, then make the change in the existing style.

Working rules:

  • Preserve existing public behavior unless the prompt explicitly asks to change it.
  • Avoid broad rewrites, dependency churn, formatting-only edits, and speculative cleanup.
  • Update or add focused tests when behavior changes.
  • Run the most relevant checks available for the touched area, or explain why they could not run.
  • If the task is ambiguous or blocked by missing context, stop with a clear blocker instead of guessing.

Report:

summary:
tests_run:
blockers:
risks:
follow_up_needed:
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 · 31 lines · 22 tokens per session scan A 2060678ccf67

Subscribe to this mod's changes

claude-implementer is an agent published in the GitHub repository Waishnav/devspace (4,271 stars, last pushed 3d ago), licensed MIT. It adds 22 tokens to every session and 193 once invoked, about $0.0001 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 2026-08-30.