An architecture skill for breaking a project's Seed into Modules, where each Module describes one major subsystem. It maps the subsystem's structure, data movement, trust boundaries, and execution flow using three complementary views.

Use it to document deployable services, databases, dependencies, sensitive-data paths, trust boundaries, sequence flows, and module lifecycle records.

It prevents architecture sketches from omitting important services, data risks, dependencies, or process steps. It also keeps each subsystem traceable to the original approved assumptions.

sdd-module — Skill for Claude Code and Codex by vladm3105

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 vladm3105/aidoc-flow-framework --skill sdd-module

Clone the repo

git clone --depth 1 https://github.com/vladm3105/aidoc-flow-framework

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/vladm3105/aidoc-flow-framework/sdd-module/github.svg)](https://agentmods.dev/skills/vladm3105/aidoc-flow-framework/sdd-module)

Your own site

<a href="https://agentmods.dev/skills/vladm3105/aidoc-flow-framework/sdd-module"><img src="https://agentmods.dev/badge/skills/vladm3105/aidoc-flow-framework/sdd-module/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/vladm3105/aidoc-flow-framework/sdd-module"><img src="https://agentmods.dev/badge/skills/vladm3105/aidoc-flow-framework/sdd-module.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 415 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00049	$0.00415
Opus 5.5	$0.00020	$0.00166
Sonnet 5.5	$0.00010	$0.00083
Haiku 4.5	$0.00005	$0.00042

Measured 19d ago against content hash e8f8676d9d93, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sdd-module 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 19d 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.

framework/skills/sdd-module/SKILL.md · 39 lines

What it actually says

SDD Module Author

Framework skill — routes to framework/governance/SEED_TO_MODULE_DECOMPOSITION.md (Triple-Lens standard) and framework/governance/MODULE_LAYOUT.md (directory structure + rules). Paths below use <skills-root> = this framework/skills/ directory. Upstream: the seed (sdd-seed) must stand — modules decompose it, never invent beyond it.

1. Model through all three lenses

Every module in docs/modules/MODULE-NN_* is an architectural subsystem (a C4-L2 container): deployable services, datastores, and dependencies mapped to approved archetypes. Lens two traces DFD-L2 data movement — trust boundaries and sensitivity (PII/secrets). Lens three choreographs the sequence/process flow. A module missing a lens is a sketch, not a module.

2. Use the standard layout

Register in MODULE-00_index.md. Directory form for multi-file modules (README.md overview, architecture.svg, decisions.md with seed references, constraints.md invariants); flat single-file form otherwise. Decisions cite the seed claims they resolve — untraced design is the exact drift the seed contract exists to catch.

3. Cover the lifecycle

Module touches on a lifecycle-carrying CHG need a module_lifecycle entry (archive → sync → version, affected modules only), each carrying author + chg_ref — CHG-L014/L015 are errors, not advice. Next: sdd-brd per module, then the SDD cascade.

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.

19d ago First seen · 39 lines · 49 tokens per session scan A e8f8676d9d93

Subscribe to this mod's changes

sdd-module is a skill published in the GitHub repository vladm3105/aidoc-flow-framework (17 stars, last pushed 5d ago), licensed MIT. It adds 49 tokens to every session and 415 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 2026-10-26.

Planning Security

sdd-module next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
sdd-modulevladm3105/aidoc-flow-framework	Skill	17	5d ago	MIT	A	49	Claude Code, Codex
imagegenopenai/codex	Skill	135k	today	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	100k	today	Apache-2.0	A	19	Claude Code
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next-cache-components-adoptionvercel/next.js	Skill	144k	today	MIT	A	95	Claude Code
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