sync-architecture

A post-implementation check that finds new code patterns, endpoints, dependencies, and domain terms missing from the architecture documentation.

In plain words
What is it for?
Use it after a task to identify the exact architecture or domain documents that need updates.
Why use it?
It detects documentation drift, where the code changes but the written description of the system does not.

Skill for Claude CodeCodex

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 skills/ayoubben18/ab-method/sync-architecture
Any agent
npx skills add ayoubben18/ab-method --skill sync-architecture
Clone the repo
git clone --depth 1 https://github.com/ayoubben18/ab-method

Made for: Claude Code, Codex.

Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,221 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 $0.00115 $0.02221
Opus 5 $0.00057 $0.01111
Sonnet 5 $0.00023 $0.00444
Haiku 4.5 $0.00012 $0.00222

Measured 3d ago against content hash cd0939feca19, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sync-architecture 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 3d 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/skills/sync-architecture/SKILL.md · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sync Architecture (post-implementation)

Keep docs/architecture/* and the domain docs live by detecting, from a completed task's diff, what the change introduced that the docs haven't caught up with — then proposing the exact doc deltas. It runs in the same post-implementation phase as ../review-implementation/SKILL.md, but asks a different question:

review-implementation asks "is this diff good code?" — this skill asks "does this diff introduce anything the docs don't yet know about?" The first is code debt; this is documentation drift.

It is the automated detection half of the manual /update-architecture workflow. Where /update-architecture is a heavy, human-invoked pass (and also runs the improve-codebase-architecture deepening loop), this skill is a lightweight detector that runs automatically after each task so the docs stop silently drifting. It reuses /update-architecture's routing table — it does not invent its own.

Silence is the default output. A task that introduced nothing doc-worthy (a bug fix, styling, a trivial CRUD following existing patterns) produces no deltas — that is the normal case. A finding survives only if the docs are genuinely now wrong or incomplete. Never invent doc churn to look thorough.

ALWAYS check .ab-method/structure/index.yaml FIRST for where the architecture and domain docs live — paths are user-configurable. Sweep only what this task changed — the cohesive diff across its missions (git diff for the commit range) plus its progress-tracker.md mission summaries. This is not a whole-repo doc audit.

Process

1. Gather diff + context

  • The changed files and their git diff for the task's commit range.
  • The task's progress-tracker.md Mission Summaries — the per-mission Files / Built / Integrates with bullets already enumerate most of what's new.
  • The current architecture + domain docs, so the detector proposes only what's genuinely missing (skip files that don't exist): docs/architecture/tech-stack.md, frontend-patterns.md, backend-patterns.md, UBIQUITOUS_LANGUAGE.md, CONTEXT.md, docs/adr/.

Read the full file on GitHub · 131 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. 3d ago First seen · 131 lines · 115 tokens per session scan A cd0939feca19

Subscribe to this mod's changes

sync-architecture is a skill published in the GitHub repository ayoubben18/ab-method (187 stars, last pushed 1mo ago), licensed MIT. It adds 115 tokens to every session and 2,221 once invoked, about $0.0006 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.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

brainstorming

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

obra/superpowers · 37 tokens

auto-perf-optimize

Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.

microsoft/vscode · 62 tokens

chat-perf

Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.

microsoft/vscode · 51 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens