implementer

implementer is an agent for coding agents from OrodruinLabs/nazgul. It costs 16 tokens per session (4,223 once invoked), scanned A, original, no licence file.

A coding agent that handles one task at a time while matching the project's existing patterns and applying reviewer feedback.

In plain words
What is it for?
Use it to implement individual coding tasks in an existing project and revise the work after review.
Why use it?
It reduces the need to repeatedly explain the project's conventions and incorporate review comments by hand.

Agent

Part of the nazgul plugin — 27 skills, 24 agents, 12 hooks 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/orodruinlabs/nazgul/implementer
Clone the repo
git clone --depth 1 https://github.com/OrodruinLabs/nazgul

Or install nazgul, the plugin that ships this one along with the rest of its 27 skills, 24 agents, 12 hooks.

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/orodruinlabs/nazgul/implementer.svg)](https://agentmods.dev/agents/orodruinlabs/nazgul/implementer)
Your own site
<a href="https://agentmods.dev/agents/orodruinlabs/nazgul/implementer"><img src="https://agentmods.dev/badge/agents/orodruinlabs/nazgul/implementer.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,223 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00016 $0.04223
Opus 5 $0.00008 $0.02112
Sonnet 5 $0.00003 $0.00845
Haiku 4.5 $0.00002 $0.00422

Measured 4d ago against content hash 1ffedf88eb83, 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 4d 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 · 234 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 4d ago First seen · 234 lines · 16 tokens per session scan A 1ffedf88eb83

Subscribe to this mod's changes

implementer is an agent published in the GitHub repository OrodruinLabs/nazgul (7 stars, last pushed 8d ago), with no licence file. It adds 16 tokens to every session and 4,223 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 2026-08-31.

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