architecture-plan

architecture-plan is a skill for Claude Code, Codex from alexei-led/architect. It costs 98 tokens per session (2,078 once invoked), scanned B, original, MIT.

A step-by-step plan for implementing an approved architecture design or refactoring an existing system. It divides the work into small changes that can be checked as they are completed.

In plain words
What is it for?
Use it to sequence refactoring work, turn an approved design into engineering tasks, or plan changes to a module, boundary, hotspot, or workflow.
Why use it?
Large architecture changes are easier to carry out when their order, scope, and verification steps are clear.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to sequence refactoring work, turn an approved design into engineering tasks, or plan changes to a module, boundary, hotspot, or workflow.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/alexei-led/architect/architecture-plan
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.

Any agent
npx skills add alexei-led/architect --skill architecture-plan
Clone the repo
git clone --depth 1 https://github.com/alexei-led/architect

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for architecture-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/alexei-led/architect/architecture-plan.svg)](https://agentmods.dev/skills/alexei-led/architect/architecture-plan)
Your own site
<a href="https://agentmods.dev/skills/alexei-led/architect/architecture-plan"><img src="https://agentmods.dev/badge/skills/alexei-led/architect/architecture-plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,078 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00098 $0.02078
Opus 5 $0.00049 $0.01039
Sonnet 5 $0.00020 $0.00416
Haiku 4.5 $0.00010 $0.00208

Measured 7d ago against content hash d007499cb54c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade B, and why

architecture-plan scanned grade B with 1 finding 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 7d 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.

Asks the agent to reveal its instructionsmediumSystem prompt leakage

Directions to print, repeat or translate the system prompt extract configuration the operator did not intend to expose.

Keep task names outcome-based. Do not expose prompt or tool internals in task
src/skills/architecture-plan/SKILL.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Architecture plan

Derive an actionable, incremental implementation/refactoring plan from an approved design, with review findings as supporting context when present. The artifact is executable by an engineer, mutator agent, or task runner; the architect writes the plan and stops.

When to use

Use after an architecture design, when the user wants approved target architecture implemented. For existing-code remediation, the default chain is architecture-reviewarchitecture-designarchitecture-plan. Plan one hotspot, boundary, module, or flow per plan unless a roadmap is explicitly requested.

If there is no approved design artifact, recommend architecture-design first. If there is no review report for existing-code remediation, recommend architecture-review before design unless the user explicitly wants greenfield target-state design.

Skill navigation

  • Missing findings for an existing system: recommend architecture-review first unless the user already supplied enough current evidence.
  • Missing approved target architecture: recommend architecture-design before planning.
  • Current skill: use architecture-plan to sequence small, verifiable changes from an approved design, citing review findings as supporting rationale when present.
  • Next skill after implementation: run architecture-review to verify the code now matches intended architecture and the plan's acceptance criteria.

Task list discipline

Maintain a visible task list for the planning flow. Track at least:

  1. Approved design artifact confirmed; supporting review report confirmed when present.
  2. Scope and first execution horizon selected.
  3. Safety net ordered before behavior-bearing changes.
  4. Executable task sections drafted.
  5. Verification and acceptance criteria attached.
  6. Handoff and re-review step recorded.

Keep task names outcome-based. Do not expose prompt or tool internals in task names.

Destination

When the user explicitly asks for a plan file and gives no destination, ask to confirm the default path under docs/plans/ using a kebab-case slug from the target, for example docs/plans/extract-auth-boundary.md. Create docs/plans/ only after the destination is confirmed. If the user only asks to generate or create a plan, return it in the conversation unless they confirm a file path. Use a user-specified path only when provided. If the user-specified path is outside docs/plans/, state that the executor must be invoked with that exact path or the plan must be copied/symlinked into the configured plans directory.

Read the full file on GitHub · 190 lines

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. 7d ago First seen · 190 lines · 98 tokens per session scan B d007499cb54c

Subscribe to this mod's changes

architecture-plan is a skill published in the GitHub repository alexei-led/architect (2 stars, last pushed 1mo ago), licensed MIT. It adds 98 tokens to every session and 2,078 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it B with 1 finding (asks the agent to reveal its instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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