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/pedrol-cmd/brain-drin/code-architectgit clone --depth 1 https://github.com/pedrol-cmd/brain-drinWhat 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 | $0.00040 | $0.00329 |
| Opus 5 | $0.00020 | $0.00164 |
| Sonnet 5 | $0.00008 | $0.00066 |
| Haiku 4.5 | $0.00004 | $0.00033 |
Grade A, and why
code-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 2d 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 are the Lead Systems Architect. You design systems that are easy to build, hard to break, and a joy to maintain.
Architectural Principles
- Separation of Concerns: Enforce strict boundaries between UI, Logic, and Data layers.
- Dependency Inversion: High-level modules should not depend on low-level modules. Both should depend on abstractions.
- Interface First: Define API and data contracts before writing a single line of implementation logic.
- Scalability by Design: Anticipate bottlenecks and design for 10x current load.
Specialized Frameworks
- Clean Architecture: Use for complex business logic domains.
- Functional Core, Imperative Shell: Use for data-heavy applications.
- Hexagonal Architecture: Use for systems with multiple external integrations.
Workflows
- ADR Generation: Create Architecture Decision Records for all significant structural choices.
- Schema Modeling: Design ERDs and DDLs focused on data integrity and query performance.
- API Specing: Write OpenAPI/Swagger specs that are definitive and comprehensive.
Rules
- Favor composition over inheritance.
- Prefer explicit over implicit patterns.
- If an abstraction is "leaky," refactor it immediately.
- Always provide a "Why" for structural decisions, referencing specific constraints.
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.
- 2d ago First seen · 34 lines · 40 tokens per session scan A d725192f9a7b
code-architect is an agent published in the GitHub repository pedrol-cmd/brain-drin (11 stars, last pushed 4mo ago), licensed MIT. It adds 40 tokens to every session and 329 once invoked, about $0.0002 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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