flow-design

flow-design is a skill for Claude Code, Codex from pwdev-solucoes/pwdev-claude-marketplace. It costs 41 tokens per session (399 once invoked), scanned A, original, Apache-2.0.

An approval-based design tool for turning agreed requirements into a detailed feature specification. It covers architecture, components, interfaces, data, permissions, failures, operations, tests, and completion criteria.

In plain words
What is it for?
Use it after requirements are approved to define system boundaries, compare architecture options, record decisions, and connect each requirement to verifiable evidence.
Why use it?
It reduces the risk of building from unclear requirements or making important architecture decisions without explicit agreement.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present. Also seen: $skill-name invocation.

Part of the pwdev-flow plugin — 17 skills, 1 command shipped together

Good fit Use it after requirements are approved to define system boundaries, compare architecture options, record decisions, and connect each requirement to verifiable evidence.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pwdev-solucoes/pwdev-claude-marketplace/flow-design
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 pwdev-solucoes/pwdev-claude-marketplace --skill flow-design
Clone the repo
git clone --depth 1 https://github.com/pwdev-solucoes/pwdev-claude-marketplace

Made for: Claude Code, Codex.

Or install pwdev-flow, the plugin that ships this one along with the rest of its 17 skills, 1 command.

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 flow-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/pwdev-solucoes/pwdev-claude-marketplace/flow-design/github.svg)](https://agentmods.dev/skills/pwdev-solucoes/pwdev-claude-marketplace/flow-design)
Your own site
<a href="https://agentmods.dev/skills/pwdev-solucoes/pwdev-claude-marketplace/flow-design"><img src="https://agentmods.dev/badge/skills/pwdev-solucoes/pwdev-claude-marketplace/flow-design/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.

agentmods 80×15 button for flow-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/pwdev-solucoes/pwdev-claude-marketplace/flow-design"><img src="https://agentmods.dev/badge/skills/pwdev-solucoes/pwdev-claude-marketplace/flow-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 399 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.00399
Opus 5 $0.00020 $0.00199
Sonnet 5 $0.00008 $0.00080
Haiku 4.5 $0.00004 $0.00040

Measured 7d ago against content hash d805bf3ca128, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

flow-design 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 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.

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.

plugins/pwdev-flow/skills/flow-design/SKILL.md · 34 lines

What it actually says

Design the central contract

Read specification, artifacts, memory, and safety before designing.

Entry gate

Require approved requirements or an equivalent user-approved contract. If requirements are missing, contradictory, or materially open, stop and recommend $flow-discover rather than inventing them.

Procedure

  1. Read requirements, project context, applicable repository instructions, current architecture, and relevant decisions or conventions.
  2. Identify consequences for components, interfaces, data, permissions, compatibility, failures, operations, and tests.
  3. Present consequential architecture choices with viable alternatives, trade-offs, and one recommendation. Obtain user approval before locking each decision.
  4. Create .planning/flow/phases/<slug>/spec.md with all eight required sections from specification.
  5. Record approved choices in decisions.md; capture only genuinely durable decisions through $flow-memory semantics.
  6. Check every requirement has a specification clause and every definition-of-done item has executable evidence.
  7. Scan for ambiguous language, hidden scope, unresolved placeholders, and contradictions.
  8. Present the specification for approval. Do not continue to planning in the same step unless the user has explicitly approved it.

Boundaries

  • Keep implementation work out of design.
  • Prefer established repository patterns unless the approved requirement demands a departure.
  • Return to discovery when a proposed design would change product scope.

Output

Return STATUS, specification path, decisions path, unresolved risks, gate result, and NEXT. Recommend $flow-plan only after the design gate is APPROVED.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 34 lines · 41 tokens per session scan A d805bf3ca128

Subscribe to this mod's changes

flow-design is a skill published in the GitHub repository pwdev-solucoes/pwdev-claude-marketplace (2 stars, last pushed 4d ago), licensed Apache-2.0. It adds 41 tokens to every session and 399 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 2026-09-03.

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