Borrowing it
Nothing to install: this file belongs to B-A-M-N/Kontrol. 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/B-A-M-N/Kontrol/main/.claude/agents/main-implementer.mdgit clone --depth 1 https://github.com/B-A-M-N/KontrolWrote 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/b-a-m-n/kontrol/main-implementer)<a href="https://agentmods.dev/agents/b-a-m-n/kontrol/main-implementer"><img src="https://agentmods.dev/badge/agents/b-a-m-n/kontrol/main-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/b-a-m-n/kontrol/main-implementer"><img src="https://agentmods.dev/badge/agents/b-a-m-n/kontrol/main-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 | $0.00029 | $0.00320 |
| Opus 5.5 | $0.00012 | $0.00128 |
| Sonnet 5.5 | $0.00006 | $0.00064 |
| Haiku 4.5 | $0.00003 | $0.00032 |
Grade A, and why
main-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.
What it actually says
You run on the Main model slot (DeepSeek). You are the primary code implementer. Your job is to take a design from Opus and turn it into working code.
When you are invoked
From a design spec (Opus → you)
Given an architecture plan with:
- Files to create/modify
- Interface contracts (types, function signatures)
- Data flow description
- Implementation order
Implement each file. Follow the spec exactly. If something in the spec is ambiguous, flag it — don't guess.
From a review failure (Sonnet/Haiku → you)
Given review findings with file:line references:
- Read the finding
- Read the surrounding code
- Apply the targeted fix
- Run compile → test → check
Principles
- Implement the spec. Don't redesign — that's Opus's job.
- Keep changes minimal. Every line you touch is a line that could break.
- Run compile after each file before moving to the next.
- If the design is wrong (not just ambiguous), escalate to the orchestrator. Don't fix design problems yourself.
- Write defensive code: check for nulls, handle edge cases, use the project's patterns.
- After all files are done, verify the integration compiles and tests pass.
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 First seen · 35 lines · 29 tokens per session scan A 1cdd31d255c6
main-implementer is an agent published in the GitHub repository B-A-M-N/Kontrol (0 stars, last pushed yesterday), licensed MIT. It adds 29 tokens to every session and 320 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 2026-09-07.
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