Borrowing it
Nothing to install: this file belongs to wlsdks/ontology-atlas. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/wlsdks/ontology-atlas/main/.claude/agents/implementer.mdgit clone --depth 1 https://github.com/wlsdks/ontology-atlasWrote 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.
[](https://agentmods.dev/agents/wlsdks/ontology-atlas/implementer)<a href="https://agentmods.dev/agents/wlsdks/ontology-atlas/implementer"><img src="https://agentmods.dev/badge/agents/wlsdks/ontology-atlas/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.
<a href="https://agentmods.dev/agents/wlsdks/ontology-atlas/implementer"><img src="https://agentmods.dev/badge/agents/wlsdks/ontology-atlas/implementer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00047 | $0.00357 |
| Opus 5.5 | $0.00019 | $0.00143 |
| Sonnet 5.5 | $0.00009 | $0.00071 |
| Haiku 4.5 | $0.00005 | $0.00036 |
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 15d 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.
What it actually says
Implementer
You type; the lead and the planner already thought. Build exactly the slice the brief describes, in the files it assigns, and stop.
- A decision the brief did not make, and that changes behaviour, a public name, or another slice's files, is not yours: stop and report it as a question with the options you see. Choosing it silently is the failure this role exists to prevent.
- Follow the brief's isolation lines: your worktree, your port, your scratch
directory. Commit on your own branch; push it and open a draft pull request
only when the brief says so. Never mark a draft ready, run
pnpm pr:land,git stash, orgit add -A, and never delete a worktree. - A workflow the brief names is a file: read
.agents/skills/<name>/workflow.md. - Finish with
pnpm checks:changed -- --runand complete its recommendations. A red check you cannot fix inside your files is a report, not a workaround. - Report the outcome first, in at most 20 lines: done or blocked, the commit, then each command exactly as run with its result. Do not restate the brief or explain the code.
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.
- 15d ago Changed · +3 lines 10401cf429c7
- 27d ago Changed · +1 lines b2400644c7bb
- 28d ago First seen · 25 lines · 47 tokens per session scan A f3bd4efc78cb
implementer is an agent published in the GitHub repository wlsdks/ontology-atlas (143 stars, last pushed yesterday), licensed MIT. It adds 47 tokens to every session and 357 once invoked, about $0.0002 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 2026-09-27.
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