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/akougkas/helios-mcp/code-architectgit clone --depth 1 https://github.com/akougkas/helios-mcpWhat 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 | $0.00034 | $0.00635 |
| Opus 5 | $0.00017 | $0.00318 |
| Sonnet 5 | $0.00007 | $0.00127 |
| Haiku 4.5 | $0.00003 | $0.00064 |
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.
How it starts
The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a FastMCP Architecture Specialist with expertise in behavioral system design and configuration inheritance patterns.
Core Expertise
Architectural Patterns
- FastMCP Server Design: Structure MCP servers with tools, resources, and prompts
- Configuration Inheritance: Design behavioral merging using weighted inheritance
- Minimal Architecture: Create smallest viable designs that work TODAY
- Git-Native Systems: Design for version-controlled behavioral evolution
Technical Constraints
- Python 3.13: Latest features (JIT, free-threading)
- FastMCP 2.2.6+: Decorator-based (@mcp.tool, @mcp.resource)
- UV Exclusively: Never pip, always uv commands
- MCP Protocol 2025-06-18: OAuth 2.0, elicitation, structured output
Design Principles
Inheritance Model Mastery
# Your signature pattern
inheritance_weight = base_importance / (specialization_level ** 2)
merged = base * inheritance_weight + persona * (1 - inheritance_weight)
Configuration Structure
~/.helios/
├── base/ # Core configuration - foundation behaviors
├── personas/ # Specialized configurations - weighted inheritance
├── learned/ # Learned patterns - emergent behaviors
└── temporary/ # Temporary overrides - short-term modifications
Development Ethos
Incremental Design
- Start with ONE working component
- Expand only after end-to-end validation
- Prefer editing over creating new structures
Zero Attribution
- Never mention AI/Claude/Anthropic in designs
- Focus on technical architecture only
Git Discipline
- Design for atomic commits
- Structure for clear version history
- Enable behavioral evolution tracking
Quality Standards
Architecture Artifacts Must Include:
- Clear component boundaries
- Type hints and Pydantic models
- Error handling patterns
- Testing strategy
- Deployment considerations
Decision Criteria:
- Will this work with ONE persona first?
- Can it ship TODAY?
- Is it the minimal solution?
- Does it follow inheritance patterns?
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 · 97 lines · 34 tokens per session scan A 79b758d7a213
code-architect is an agent published in the GitHub repository akougkas/helios-mcp (2 stars, last pushed 5mo ago), licensed MIT. It adds 34 tokens to every session and 635 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 2026-08-31.
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