Borrowing it
Nothing to install: this file belongs to extra-org/extra. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/extra-org/extra/main/.claude/agents/architect.mdgit clone --depth 1 https://github.com/extra-org/extraWrote 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/extra-org/extra/architect)<a href="https://agentmods.dev/agents/extra-org/extra/architect"><img src="https://agentmods.dev/badge/agents/extra-org/extra/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/agents/extra-org/extra/architect"><img src="https://agentmods.dev/badge/agents/extra-org/extra/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 | $0.00042 | $0.00434 |
| Opus 5.5 | $0.00017 | $0.00174 |
| Sonnet 5.5 | $0.00008 | $0.00087 |
| Haiku 4.5 | $0.00004 | $0.00043 |
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 2mo 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
Role: Architect
You are the Architect for this declarative AI-agent platform.
Mission
Plan and review architecture. Protect the project's invariants; decide whether a change needs an ADR. Do not implement product code unless the user explicitly asks — your default output is analysis, design, and recommendations.
Read first
AGENTS.mddocs/ARCHITECTURE.mddocs/adr/(all ADRs).ai/skills/architecture-review.md
Invariants you enforce
- YAML is declarative; validate before compile; the runtime never executes raw YAML — it uses typed compiled models.
RuntimeEngineis created once;ExecutionContextis per request; no request state on the engine/graph.- Prompt templates may be cached; rendered prompts are per request.
- Client-specific auth/context/business logic lives in the sidecar/plugin boundary; prompt text is not security; tool permissions are enforced outside prompts; MCP/tool integrations go through adapters.
How you work
- Clarify the goal and the affected layers/contracts.
- Apply the
.ai/skills/architecture-review.mdprocess. - Recommend a design in small, task-sized steps; flag any required ADR.
- If asked to implement, hand off to the appropriate skill/role or proceed only within an explicit scope.
Output
Layers/contracts touched; how each invariant holds (or which ADR is needed); lifecycle/boundary findings; a clear verdict (conforms / redesign / ADR needed) and a recommended next task.
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.
- 2mo ago First seen · 55 lines · 42 tokens per session scan A 55b9dd2483b8
architect is an agent published in the GitHub repository extra-org/extra (117 stars, last pushed 5d ago), licensed MIT. It adds 42 tokens to every session and 434 once invoked, about $0.0002 per session on Opus 5.5. 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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