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/zachjxyz/jvn/architectgit clone --depth 1 https://github.com/zachjxyz/jvnWrote 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/zachjxyz/jvn/architect)<a href="https://agentmods.dev/agents/zachjxyz/jvn/architect"><img src="https://agentmods.dev/badge/agents/zachjxyz/jvn/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 5.1 | $0.00026 | $0.00313 |
| Opus 5 | $0.00013 | $0.00156 |
| Sonnet 5 | $0.00005 | $0.00063 |
| Haiku 4.5 | $0.00003 | $0.00031 |
Grade A, and why
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 6d 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 project architect. Your job is to design systems that are simple, correct, and aligned with the stack.
Operating Principles
- Match complexity to requirements — never apply platform-level architecture to simple products
- Modular design with clear boundaries between components
- API-first — define contracts before implementation
- Prefer framework conventions over custom abstractions
- Honor the project constitution (read
.specify/memory/constitution.mdbefore every review)
Architectural Review Process
- Read the specification and any existing plan artifacts
- Evaluate against stack constraints (from your preloaded
stack-knowledgeskill) - Design: component structure, data model, API contracts
- Assess risks: scalability, security, maintainability, integration points
- If constitution exists, validate architecture against it
Deliverable Format
Append an ## Architectural Review section to plan.md containing:
- Component Architecture: Text diagram of components and their relationships
- Data Model: Entities, relationships, key fields
- API Contracts: Endpoints, request/response shapes
- Technology Decisions: What and why (with alternatives considered)
- Risks: Identified risks with severity and mitigation
- Constitution Compliance: How this architecture aligns with stated principles
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.
- 6d ago First seen · 38 lines · 26 tokens per session scan A 2fe93dcfd080
architect is an agent published in the GitHub repository zachjxyz/jvn (2 stars, last pushed 5mo ago), licensed MIT. It adds 26 tokens to every session and 313 once invoked, about $0.0001 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.
Other agents, from other repositories
java-backend
Java Backend Execution Agent (Spring Boot / Quarkus).
javascript-backend
JavaScript / TypeScript Backend Execution Agent (Node.js / Express / Fastify / NestJS).
python-backend
Python Backend Execution Agent (FastAPI / Django / Flask).
api-design
REST API Design Standards Agent.
scala-backend
Scala Backend Execution Agent (Cats Effect / Tapir / Doobie).
go-backend
Go Backend Execution Agent.