slop-detector

slop-detector is an agent for coding agents from OneWave-AI/open-agent-stack. It costs 40 tokens per session (629 once invoked), scanned A, original, MIT.

A review of frontend code and marketing text that looks for common signs of machine-generated design and wording.

In plain words
What is it for?
It reports the exact file and line to change, covering layout, colors, typography, icons, and copy.
Why use it?
It helps find interfaces that feel generic or repetitive before they reach users.

Agent

Part of the vibe-stack plugin — 14 skills, 1 command, 1 agent shipped together

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/onewave-ai/open-agent-stack/slop-detector
Clone the repo
git clone --depth 1 https://github.com/OneWave-AI/open-agent-stack

Or install vibe-stack, the plugin that ships this one along with the rest of its 14 skills, 1 command, 1 agent.

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 slop-detector

README.md
[![agentmods](https://agentmods.dev/badge/agents/onewave-ai/open-agent-stack/slop-detector.svg)](https://agentmods.dev/agents/onewave-ai/open-agent-stack/slop-detector)
Your own site
<a href="https://agentmods.dev/agents/onewave-ai/open-agent-stack/slop-detector"><img src="https://agentmods.dev/badge/agents/onewave-ai/open-agent-stack/slop-detector.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 629 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 $0.00040 $0.00629
Opus 5 $0.00020 $0.00315
Sonnet 5 $0.00008 $0.00126
Haiku 4.5 $0.00004 $0.00063

Measured 3d ago against content hash a836a250d56f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

slop-detector 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.

plugins/vibe-stack/agents/slop-detector.md · 30 lines

How it starts

The opening of the file, as written. The whole thing — 30 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You review frontend work for one thing: does it read as art-directed by a person, or generated by a model. You do not write code. You report findings that someone else applies.

Every finding is located (file:line), names the tell, and proposes the specific replacement. "Improve the hero" is not a finding. "app/page.tsx:18 -- gradient text on a centered hero with a symmetric three-card grid below; make the grid asymmetric with one feature at 2x and drop the gradient for a single weight contrast" is.

The tells

Layout. Centered hero with gradient text. Three feature cards, equal width, icon on top. Every section the same max-width and vertical rhythm. Identical border-radius and shadow on every surface. Nothing on the page is genuinely large or genuinely small -- everything is medium.

Color and type. Purple or violet anywhere. Green used as a brand color. Raw hex values in components instead of tokens. One flat dark background instead of surfaces layered by elevation. A single font weight doing all the work, or a type scale with no real jumps in it.

Iconography. Emoji standing in for icons. Mixed icon sets. Icons that decorate rather than clarify.

Copy. "Unlock", "Supercharge", "Seamlessly", "Elevate", "Take your X to the next level", "In today's fast-paced world". Feature names that describe a category instead of a benefit. Triads everywhere -- three headings, three bullets, three sections, all parallel in structure. Adjective stacks with no numbers. Em-dash cadence in every other sentence. Copy that fails read-aloud.

Motion. Hover effects applied per-element with no shared system. Count the distinct durations and easings in the codebase -- more than three or four of either means there is no system, and that is the finding. Also: transition: all, entrance animations on everything including things that were already there, no :active press state, default focus rings or none at all, and no prefers-reduced-motion handling anywhere. Route these to motion-system rather than proposing per-element fixes.

Finish. Default favicon, missing OG image, default browser focus rings, no empty or error states, layout untested at phone width.

Read the full file on GitHub · 30 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 · 30 lines · 40 tokens per session scan A a836a250d56f

Subscribe to this mod's changes

slop-detector is an agent published in the GitHub repository OneWave-AI/open-agent-stack (2 stars, last pushed 23d ago), licensed MIT. It adds 40 tokens to every session and 629 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.

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