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 skills add vadimcomanescu/codex-skills --skill senior-architectgit clone --depth 1 https://github.com/vadimcomanescu/codex-skillsWrote 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/skills/vadimcomanescu/codex-skills/senior-architect)<a href="https://agentmods.dev/skills/vadimcomanescu/codex-skills/senior-architect"><img src="https://agentmods.dev/badge/skills/vadimcomanescu/codex-skills/senior-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/skills/vadimcomanescu/codex-skills/senior-architect"><img src="https://agentmods.dev/badge/skills/vadimcomanescu/codex-skills/senior-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 | $0.00069 | $0.00546 |
| Opus 5 | $0.00034 | $0.00273 |
| Sonnet 5 | $0.00014 | $0.00109 |
| Haiku 4.5 | $0.00007 | $0.00055 |
Grade A, and why
senior-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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Senior Architect
Design and document architectures that are clear, defensible, and shippable.
Quick Start
- Clarify constraints:
- Primary user journey + success metrics
- Non-functional requirements (latency, throughput, availability, cost, compliance)
- Team constraints (skills, timelines, operational maturity)
- Produce outputs (in this order):
- Context: system boundary + external dependencies
- Containers: major runtime components and responsibilities
- Interfaces: APIs/events/contracts + data ownership
- Risks: failure modes + mitigations + open questions
- Decisions: ADRs with explicit trade-offs
Use the bundled tools (optional, but recommended)
From your project root, run the scripts from the installed skill directory (default install location: ~/.codex/skills/senior-architect/).
Bootstrap a documentation skeleton (ADR + architecture doc templates):
python ~/.codex/skills/senior-architect/scripts/project_architect.py . --out docs/architecture
Summarize dependencies and detected stack signals (Node/Python/Go/Rust, Next.js, Postgres, etc.):
python ~/.codex/skills/senior-architect/scripts/dependency_analyzer.py . --json --output /tmp/deps.json
Generate a starter Mermaid diagram based on detected components:
python ~/.codex/skills/senior-architect/scripts/architecture_diagram_generator.py . --out docs/architecture/diagram.mmd
References (load only when needed)
- Architecture patterns and when to use them:
references/architecture-patterns.md - End-to-end system design workflow + checklists:
references/system-design-workflow.md - Tech decision matrixes (DB, APIs, queues, caching, observability):
references/tech-decision-guide.md
Deliverables (what “done” looks like)
docs/architecture/ARCHITECTURE.mdwith clear boundaries, contracts, data ownership, and scaling assumptions- At least one ADR under
docs/architecture/adr/for the most consequential decision - A Mermaid diagram (
.mmd) that matches the written architecture
What ships with it
10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- assets/adr-template.md 659 B
- assets/architecture-template.md 1.3 KB
- assets/mermaid-context-template.mmd 243 B
- LICENSE.txt 1.1 KB
- references/architecture-patterns.md 1.6 KB
- references/system-design-workflow.md 1.4 KB
- references/tech-decision-guide.md 1.1 KB
- scripts/architecture_diagram_generator.py 2.5 KB runs code
- scripts/dependency_analyzer.py 6.2 KB runs code
- scripts/project_architect.py 1.8 KB runs 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.
- 10d ago First seen · 50 lines · 69 tokens per session scan A 27eb7ca32401
senior-architect is a skill published in the GitHub repository vadimcomanescu/codex-skills (24 stars, last pushed 7mo ago), licensed MIT. It adds 69 tokens to every session and 546 once invoked, about $0.0003 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 2026-08-30.
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