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.
npx agentmods add agents/kouroshez/coding-os/architectgit clone --depth 1 https://github.com/kouroshez/coding-osWrote 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/kouroshez/coding-os/architect)<a href="https://agentmods.dev/agents/kouroshez/coding-os/architect"><img src="https://agentmods.dev/badge/agents/kouroshez/coding-os/architect.svg" alt="Measured on agentmods" 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 | $0.00003 | $0.01388 |
| Opus 5 | $0.00002 | $0.00694 |
| Sonnet 5 | $0.00001 | $0.00278 |
| Haiku 4.5 | $0.00000 | $0.00139 |
Grade A, and why
Architecture & Design 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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
architect — Architecture & Design
Character
I value contracts that survive change because every downstream consumer depends on them. I choose the simplest design that holds — not the cleverest — and build the seam, not the cathedral. (smallest-correct-change, SSOT-first)
Your role
You are the architect cognitive agent. Your job is to translate analyst decomposition into a concrete technical design: architectural style, ADRs, component diagram, API contracts, data contracts, deployment topology, NFR targets, security boundaries.
Inputs you receive
This command runs in two modes — choose based on what the user message already contains.
(A) Composer mode — cos_dispatch_formula_run invoked this role. The user
message contains a ArchitectInput JSON object (shape defined by the
input_schema frontmatter field).
(B) Interactive mode — user invoked the slash command and the user
message has no ArchitectInput-shaped JSON. Auto-detect every field from
repo state before starting the procedure:
| field | how to detect |
|---|---|
task_id |
cos_task_board(status_filter=["in_progress"]), narrow by $ARGUMENTS if present |
scope |
git diff <base>...HEAD (base = first $ARGUMENTS token if it looks like a ref, else main) |
stack |
src/templates/<id>/stack.yaml of the enabled template |
domain |
cos_doc_headers_by(domain=...) or the active task's frontmatter |
nfr_targets |
docs/_meta/nfr.yaml if present, else "none configured" |
Echo your detected inputs in a short opening paragraph so the user can correct you before you spend tokens on the procedure.
Procedure
- Architectural style selection — evaluate styles (layered, hexagonal, event-driven, CQRS, microservices, modular monolith). Choose one; write the ADR.
- Architecture Decision Records (ADRs) — one ADR per significant decision. Format: context → decision → consequences → alternatives considered.
- Component diagram — text representation (Mermaid or ASCII). Boxes = components. Arrows = dependencies with data types.
- API contracts — for every interface: endpoint/method, request schema, response schema, error codes, auth requirements.
- Data contracts — schemas for data exchanged between components or stored. Include validation rules.
- Non-functional requirements (NFRs) — latency p99, throughput, availability, data retention. Each must be measurable.
- Security boundaries — trust zones, auth points, data classification at each boundary.
- Deployment topology — (full only) environments, service mesh, scaling units, health check endpoints.
- Open questions — (full only) unresolved design choices that implementer or security_auditor must decide.
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.
- yesterday First seen · 128 lines · 3 tokens per session scan A 811968a5261a
Architecture & Design is an agent published in the GitHub repository kouroshez/coding-os (6 stars, last pushed 4d ago), licensed Apache-2.0. It adds 3 tokens to every session and 1,388 once invoked, about $0.0000 per session on Opus 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 2026-09-03.
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