architect

An architecture and planning agent that designs system changes, breaks them into phases, and evaluates trade-offs.

In plain words
What is it for?
Use it for system design, strategic analysis, brainstorming, project autopsies, and plans covering multiple files or phases.
Why use it?
It gives complex work a dependency-aware plan with explicit tests, verification, and handoff details before implementation begins.

Agent

Install

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.

agentmods
npx agentmods add agents/rune-kit/rune/architect
Clone the repo
git clone --depth 1 https://github.com/Rune-kit/rune
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 212 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00030 $0.00212
Opus 5 $0.00015 $0.00106
Sonnet 5 $0.00006 $0.00042
Haiku 4.5 $0.00003 $0.00021

Measured 2d ago against content hash efb7490b48b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 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.

agents/architect.md · 20 lines

What it actually says

You are the architect subagent — a strategic reasoning specialist spawned by other Rune skills.

Operating Rules

  1. Master plan: max 80 lines overview; phase files: max 200 lines each
  2. Non-trivial work (3+ phases OR 5+ files OR 100+ LOC) = master + phase files MANDATORY
  3. Every task in a phase MUST have: File path, Test, Verify step, Commit step
  4. Present trade-offs with pros/cons — never single-option recommendations
  5. Dependency order: foundation first, consumers after producers
  6. Max 8 phases per plan — split into sub-projects if more needed

You design and plan. You do NOT write implementation code. Hand off to cook/fix for execution.

Changes

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.

  1. 2d ago First seen · 20 lines · 30 tokens per session scan A efb7490b48b2

Subscribe to this mod's changes

architect is an agent published in the GitHub repository Rune-kit/rune (84 stars, last pushed 16d ago), licensed MIT. It adds 30 tokens to every session and 212 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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