design-critic-agent

design-critic-agent is an agent for Claude Code from NomaDamas/slides-grab. It costs 15 tokens per session (419 once invoked), scanned A, original, MIT.

A pre-export review process for slide decks that checks both the files and the rendered slide images. It uses separate reviews for technical constraints and audience readability.

In plain words
What is it for?
Use it to validate slides, render review images, and produce a structured design-gate report before exporting the presentation.
Why use it?
It helps find structural or visual problems before export and requires reviewers to inspect the actual rendered PNGs.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: mentions subagents.

Good fit Use it to validate slides, render review images, and produce a structured…

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Install with agentmods
npx agentmods add agents/nomadamas/slides-grab/design-critic-agent
About the project

slides-grab is a tool for creating and editing presentations as HTML and CSS files, with an editor that lets coding agents work on selected parts of a slide and export decks to PDF or experimental PPTX files. It is for people generating presentations with Claude Code, Codex, and related agents. The catalogue entries provide skills, agents, and instructions for its presentation workflow.

NomaDamas/slides-grab · 1,205 stars · on GitHub · nomadamas.github.io

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.

Clone the repo
git clone --depth 1 https://github.com/NomaDamas/slides-grab

Made for: Claude Code.

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-critic-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/nomadamas/slides-grab/design-critic-agent.svg)](https://agentmods.dev/agents/nomadamas/slides-grab/design-critic-agent)
Your own site
<a href="https://agentmods.dev/agents/nomadamas/slides-grab/design-critic-agent"><img src="https://agentmods.dev/badge/agents/nomadamas/slides-grab/design-critic-agent.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 419 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 $0.00015 $0.00419
Opus 5 $0.00008 $0.00210
Sonnet 5 $0.00003 $0.00084
Haiku 4.5 $0.00002 $0.00042

Measured 7d ago against content hash 506103defe0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

design-critic-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 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

runtimes/claude-code/agents/design-critic-agent.md · 24 lines

What it actually says

Use the canonical gate in skills/slides-grab-design/references/design-gate.md.

Required workflow:

  1. Run slides-grab validate --slides-dir <slides-dir>.
  2. Render evidence with slides-grab png --slides-dir <slides-dir> --output-dir <slides-dir>/.slides-grab/gate-preview.
  3. Prefer dispatching the two read-only reviews to separate critic subagents/tasks, distinct from the slide-building agent and from each other. Explicitly select image/vision-capable models and require each reviewer to open the rendered PNGs directly; Pass B must never be approved from HTML-only inspection. If only one vision-capable critic is available, assign it to Pass B and keep Pass A independent without claiming visual checks it could not inspect.
    • Pass A: System Contract / Constraint Integrity.
    • Pass B: Audience Impact / Expressive Readability. Each Proceed report must use the CLI-enforced structure from skills/slides-grab-design/references/design-gate.md: role title, VERDICT: PASS, confidence, rendered PNG evidence filenames, current slide-*.html: <sha256> fingerprints, Unresolved Critical: 0, Blocking findings: None, findings table, and all required checks marked PASS.
  4. If both passes conclude Proceed, record the gate with:
slides-grab design-gate --slides-dir <slides-dir> --verdict proceed --pass-a-report <pass-a.md> --pass-b-report <pass-b.md>

If either pass finds blocking issues, or if slides-grab design-gate rejects the reports, fix the slides/reports and repeat from validation and fresh rendered evidence. Do not run slides-grab pdf, slides-grab convert, or slides-grab figma until the CLI gate records proceed.

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 · 24 lines · 15 tokens per session scan A 506103defe0f

Subscribe to this mod's changes

design-critic-agent is an agent published in the GitHub repository NomaDamas/slides-grab (1,205 stars, last pushed yesterday), licensed MIT. It adds 15 tokens to every session and 419 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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