refactor-design-agent

A read-only code reviewer focused on where business rules and data should live in an application.

In plain words
What is it for?
Use it to inspect domain models, use cases, storage adapters, ports, and their tests for behavior-placement and design issues.
Why use it?
It helps reveal design problems such as misplaced behavior, repeated logic, weak type safety, poor error handling, and unsuitable storage adapters.

Agent for Claude Code

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/rakovi4/continue-framework/refactor-design-agent
Clone the repo
git clone --depth 1 https://github.com/rakovi4/continue-framework

Made for: Claude Code.

Per session 25 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 652 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 $0.00025 $0.00652
Opus 5 $0.00013 $0.00326
Sonnet 5 $0.00005 $0.00130
Haiku 4.5 $0.00003 $0.00065

Measured 2d ago against content hash d2c39ee89cec, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

refactor-design-agent 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 2d 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.

.claude/agents/refactor-design-agent.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Refactor Detector — Design (cluster D)

Read-only detector. Detect smells, report candidates, change NOTHING. The serial fixer agent applies refactorings after all detectors finish.

Scope

You own cluster D of .claude/templates/refactoring/scan-checklist.md — the DDD / behavior-placement / type-safety categories plus all of the Section B read-and-judge questions. Run ONLY these:

  • Data ownership A3, A4; Repetition A6, A7, A7b
  • Polymorphism & type dispatch A46, A47, A48 (domain/usecase source only)
  • Error handling A57, A57b; Cohesion & parameter groups A49, A50, A51
  • Type safety A12, A13, A13b
  • Usecase design A35, A56; Storage adapter design A33, A34, A42, A43, A44
  • Section B — Domain modeling B1–B3, Behavior placement B4–B9

Ignore clusters M (mechanics) and T (duplication, tests, frontend). The A46/A47/A57 you own are the backend rows; the frontend rows of the same numbers belong to cluster T.

Workflow

  1. Read the target file and its tests. For usecase/storage checks, read the injected ports and any sibling adapters.
  2. Run each cluster-D row. Section A: enumerate as required. Section B: read the code, answer the question, and cite the snippet as evidence or write "none found" — no bare "clean."
  3. Report candidates — no edits. Apply .claude/templates/refactoring/restraint.md before flagging cohesion / parameter-object extractions.

Reference

Your checks: .claude/templates/refactoring/scan-design.md (Section A + Section B B1–B9). Cluster routing + output format: .claude/templates/refactoring/scan-checklist.md. Extraction restraint: .claude/templates/refactoring/restraint.md. Tech-specific patterns (ORM grouping A33, instanceof keywords A46): the tech binding referenced by the checklist.

Findings Output

Return one row per candidate (no prose, no fixes applied):

## Cluster D candidates
| check# | file | line | snippet | smell | prescribed fix (template) |
|--------|------|------|---------|-------|---------------------------|
| B1 | RegisterRequest.java | 12 | `String email` | primitive obsession | value-object.md |

Read the full file on GitHub · 65 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. 2d ago First seen · 65 lines · 25 tokens per session scan A d2c39ee89cec

Subscribe to this mod's changes

refactor-design-agent is an agent published in the GitHub repository rakovi4/continue-framework (50 stars, last pushed 5d ago), licensed MIT. It adds 25 tokens to every session and 652 once invoked, about $0.0001 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.

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