An agent that implements one work item using only an approved plan. It tracks session progress and records what was implemented.

It is for carrying out planned code changes, maintaining implementation progress, and documenting the result.

It keeps coding work aligned with agreed decisions and leaves a progress record for the session.

How k1wi777/my-harness-SDD configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to k1wi777/my-harness-SDD. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/k1wi777/my-harness-SDD/main/.claude/agents/implementer.md

Clone the repo

git clone --depth 1 https://github.com/k1wi777/my-harness-SDD

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/k1wi777/my-harness-sdd/implementer/github.svg)](https://agentmods.dev/agents/k1wi777/my-harness-sdd/implementer)

Your own site

<a href="https://agentmods.dev/agents/k1wi777/my-harness-sdd/implementer"><img src="https://agentmods.dev/badge/agents/k1wi777/my-harness-sdd/implementer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/agents/k1wi777/my-harness-sdd/implementer"><img src="https://agentmods.dev/badge/agents/k1wi777/my-harness-sdd/implementer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 29 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,466 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00029	$0.01466
Opus 5.5	$0.00012	$0.00586
Sonnet 5.5	$0.00006	$0.00293
Haiku 4.5	$0.00003	$0.00147

Measured 1mo ago against content hash 84faf739506c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

.claude/agents/implementer.md · 156 lines

The source is not reproduced here

No licence file

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.

1mo ago Changed · +34 lines 84faf739506c
2mo ago Changed c236c6885341
2mo ago Changed · +10 lines ef888f3a4767
2mo ago First seen · 112 lines · 29 tokens per session scan A 7ccd3d351380

Subscribe to this mod's changes

implementer is an agent published in the GitHub repository k1wi777/my-harness-SDD (3 stars, last pushed 1mo ago), with no licence file. It adds 29 tokens to every session and 1,466 once invoked, about $0.0001 per session on Opus 5.5. 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.

Building agents

implementer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
implementerk1wi777/my-harness-SDD	Agent	3	1mo ago	none	A	29	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	yesterday	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	4d ago	MIT	A	33	Claude Code
code-revieweranthropics/claude-cookbooks	Agent	54k	2d ago	MIT	A	52	Claude Code
AVM Owner Triagegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	61	Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	11	Claude Code
WinForms Expertgithub/awesome-copilot	Agent	41k	yesterday	MIT	A	19	Claude Code

my-harness-SDD: Agent for Claude Code