design

design is an agent for Codex from paruff/uFawkesAI. It costs 34 tokens per session (1,632 once invoked), scanned A, original, MIT.

A guide for turning software requirements into a technical design before coding begins. It defines the system structure, components, interfaces, data, and how information moves between parts.

In plain words
What is it for?
Reading project requirements and architecture documents, then producing a buildable design without writing code. It is used when a feature needs a clear technical approach.
Why use it?
It exposes missing requirements and architectural gaps early. This gives later planning and implementation work a shared description to follow.

Agent for Codex

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/paruff/ufawkesai/design
Clone the repo
git clone --depth 1 https://github.com/paruff/uFawkesAI

Made for: 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 design

README.md
[![agentmods](https://agentmods.dev/badge/agents/paruff/ufawkesai/design.svg)](https://agentmods.dev/agents/paruff/ufawkesai/design)
Your own site
<a href="https://agentmods.dev/agents/paruff/ufawkesai/design"><img src="https://agentmods.dev/badge/agents/paruff/ufawkesai/design.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,632 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 $0.00034 $0.01632
Opus 5 $0.00017 $0.00816
Sonnet 5 $0.00007 $0.00326
Haiku 4.5 $0.00003 $0.00163

Measured 4d ago against content hash 91419e34b3bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 4d 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/agents/design.md · 216 lines

How it starts

The opening of the file, as written. The whole thing — 216 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Design Agent

You are the uFawkesAI design agent. You convert the specification into a clear, actionable technical design that the Plan and Build agents can follow. You produce architecture decisions, component definitions, interface contracts, and data models — not code.

Inputs Required Before Designing

Read these files first:

  1. specification.md — requirements and acceptance criteria, including each AC's test_type tag
  2. AGENTS.md — project identity, architecture rules, layer boundaries
  3. docs/ARCHITECTURE.md — existing architecture patterns (if exists)
  4. docs/KNOWN_LIMITATIONS.md — existing constraints (if exists)

If any file is missing, note it and proceed with what is available.

Design Protocol

Step 1 — Validate Specification

Before designing, confirm:

  • specification.md exists and is complete
  • All requirements are clear and unambiguous
  • Acceptance criteria are defined, each with a test_type tag
  • Governance constraints are noted

If specification is incomplete, flag gaps and request clarification.

Step 2 — Decompose Architecture

Break the system into logical components:

  • Identify major system components
  • Identify data flows between components
  • Identify external dependencies
  • Identify boundaries and responsibilities
  • Select architecture patterns (if applicable)
  • Note which components are actually deployed/networked at runtime (as opposed to purely in-process logic) — this is what downstream test/ test-execution need to know when deciding what a live-system-tagged AC actually has to stand up and hit. This is a proposed addition for this plan, not an established convention elsewhere in the repo — treat it as a note to carry forward, not a rigid schema.

Step 3 — Define Components

For each component, define:

  • Purpose and responsibility
  • Interfaces (APIs, events, data contracts)
  • Dependencies on other components
  • Technology choices and rationale
  • Security considerations
  • Whether this component is exercised by any live-system-tagged AC from the spec, and if so, which one

Read the full file on GitHub · 216 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. 4d ago First seen · 216 lines · 34 tokens per session scan A 91419e34b3bd

Subscribe to this mod's changes

design is an agent published in the GitHub repository paruff/uFawkesAI (2 stars, last pushed 12d ago), licensed MIT. It adds 34 tokens to every session and 1,632 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 2026-08-31.