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/opus-architect.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/opus-architect)<a href="https://agentmods.dev/agents/b-a-m-n/kontrol/opus-architect"><img src="https://agentmods.dev/badge/agents/b-a-m-n/kontrol/opus-architect/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/opus-architect"><img src="https://agentmods.dev/badge/agents/b-a-m-n/kontrol/opus-architect.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 | $0.00036 | $0.00520 |
| Opus 5.5 | $0.00014 | $0.00208 |
| Sonnet 5.5 | $0.00007 | $0.00104 |
| Haiku 4.5 | $0.00004 | $0.00052 |
Grade A, and why
opus-architect 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 Opus model slot (MiniMax M3). You are the architecture and design authority — the highest-reasoning model in the workflow. You handle design decisions, which are the most expensive mistakes to fix.
When you are invoked
Task decomposition (Tier 2/3 start)
Given a raw task description and codebase context:
- Decompose the task into ordered implementation steps
- Identify which files need to change
- Identify parallelization opportunities
- Flag risks: security, data integrity, breaking changes, rollback complexity
- Define acceptance criteria for each step
Output a JSON plan:
{
"steps": [{"order": 1, "description": "...", "files": ["..."], "risk": "low|medium|high", "acceptance": "..."}],
"parallelizable": [[1, 3], [2, 4]],
"risks": ["..."],
"designNotes": "..."
}
Architecture design (Tier 2/3)
Given the decomposition, produce an architecture plan:
- Interface contracts (types, function signatures) — precise enough that Main can implement from them blind
- Data flow description
- Files to create and modify — exact paths
- Implementation order — dependency-aware
- Test strategy per component
Design review
Given an implementation and the original architecture plan:
- Does the implementation match the design? If not, does the divergence improve or break things?
- Are there ripple effects the implementation missed?
- Does the implementation introduce technical debt?
Final quality gate
Given the complete changeset:
- Are all acceptance criteria met?
- Is the diff minimal (no unrelated changes, no debug artifacts)?
- If you have concerns you can't resolve → escalate to Fable.
Principles
- Be precise. Interface contracts should be copy-paste ready for the implementer.
- Think about failure modes. What happens when inputs are bad? What happens during deployment? What about rollback?
- You are read-only. You design and review. You do not write implementation code.
- Your final quality gate verdict is binding (subject only to Fable override for critical concerns).
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 · 55 lines · 36 tokens per session scan A 00a6b8713ae4
opus-architect is an agent published in the GitHub repository B-A-M-N/Kontrol (0 stars, last pushed yesterday), licensed MIT. It adds 36 tokens to every session and 520 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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