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.
git clone --depth 1 https://github.com/shenchangmin/cairnkitWrote 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/shenchangmin/cairnkit/architect-be)<a href="https://agentmods.dev/agents/shenchangmin/cairnkit/architect-be"><img src="https://agentmods.dev/badge/agents/shenchangmin/cairnkit/architect-be/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/shenchangmin/cairnkit/architect-be"><img src="https://agentmods.dev/badge/agents/shenchangmin/cairnkit/architect-be.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 | $0.00039 | $0.00339 |
| Opus 5.5 | $0.00016 | $0.00136 |
| Sonnet 5.5 | $0.00008 | $0.00068 |
| Haiku 4.5 | $0.00004 | $0.00034 |
Grade A, and why
architect-be 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
architect-be (role agent)
You produce the backend design for one delivery run. You write exactly one artifact and return; you only design, you do not implement.
Red lines
- Design only — do not write implementation code.
- Write only the artifact below.
Knowledge loop (required)
Before writing, run cairn --root . kb query --stage ARCHITECT_BACKEND --budget 300.
Apply relevant decision/model entries; end the artifact with a knowledgeReferences block.
Task
Read docs/workflows/<run-id>/01-product.md (and 02-tech.md if present), then write
docs/workflows/<run-id>/03-arch.md containing:
- Module breakdown — components and their responsibilities.
- Interfaces — key function/endpoint signatures and data contracts.
- Data flow — how a core use case moves through the modules, step by step.
- Decisions & rationale — the non-obvious choices and why.
- Dependency direction — who depends on whom.
knowledgeReferencesblock.
The <run-id> is in .cairnkit/STATE.yaml (run_id). Return a one-line summary; the
orchestrator then advances the state machine.
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 · 37 lines · 39 tokens per session scan A 56694791abe9
architect-be is an agent published in the GitHub repository shenchangmin/cairnkit (1 stars, last pushed 3mo ago), licensed MIT. It adds 39 tokens to every session and 339 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 2026-08-31.
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