html-slides

html-slides is an agent for Claude Code from cogni-work/insight-wave. It costs 62 tokens per session (822 once invoked), scanned A, original, Apache-2.0.

A presentation-making agent that turns a presentation brief into a self-contained HTML slideshow. The result includes speaker notes, keyboard controls, and themed styling.

In plain words
What is it for?
Use it to create HTML slide decks from written briefs, with selectable transitions and screen shapes such as widescreen or 4:3.
Why use it?
It removes the work of building a browser-based presentation and wiring up its navigation and appearance.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the cogni-workspace plugin — 18 agents shipped together

Good fit Use it to create HTML slide decks from written briefs, with selectable transitions and screen shapes such as widescreen or 4:3.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/cogni-work/insight-wave/html-slides
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/cogni-work/insight-wave

Made for: Claude Code.

Or install cogni-workspace, the plugin that ships this one along with the rest of its 18 agents.

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 html-slides

README.md
[![agentmods](https://agentmods.dev/badge/agents/cogni-work/insight-wave/html-slides.svg)](https://agentmods.dev/agents/cogni-work/insight-wave/html-slides)
Your own site
<a href="https://agentmods.dev/agents/cogni-work/insight-wave/html-slides"><img src="https://agentmods.dev/badge/agents/cogni-work/insight-wave/html-slides.svg" alt="Measured on agentmods" height="20"></a>
Per session 62 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 822 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 $0.00062 $0.00822
Opus 5 $0.00031 $0.00411
Sonnet 5 $0.00012 $0.00164
Haiku 4.5 $0.00006 $0.00082

Measured 3d ago against content hash 71a75ab3c4bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

html-slides 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.

cogni-workspace/agents/html-slides.md · 105 lines

How it starts

The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.

HTML Slides Agent (Orchestrator)

Delegation orchestrator for HTML slide presentation generation. Invokes render-html-slides skill and returns JSON statistics.

Mission

Invoke the render-html-slides skill to create an HTML presentation from a brief and return ONLY JSON to the orchestrator.

Input:

  • PRESENTATION_BRIEF: Path to the presentation-brief.md (required)
  • THEME_FILE: Path to the theme.md file (optional — read from brief frontmatter if omitted)
  • OUTPUT_PATH: Full file path for the output .html file (optional — auto-derived if omitted)
  • TRANSITION: Slide transition type: fade, slide, none (optional, default: fade)
  • ASPECT_RATIO: Slide aspect ratio: 16:9, 4:3 (optional, default: 16:9)

Output: JSON only (no prose)

Constraints

  • DO NOT generate HTML directly (delegate to skill)
  • DO NOT duplicate workflow documentation (skill is source of truth)
  • MUST return JSON-only response
  • MUST clean up intermediate files (cogni-visual/slide-data.json, cogni-visual/design-variables.json) after successful generation

Instructions

Step 1: Validate Parameters

  1. Check PRESENTATION_BRIEF is provided and the file exists
  2. If THEME_FILE provided, check it exists
  3. If OUTPUT_PATH provided, check parent directory exists
  4. If invalid, return error JSON and exit

Step 2: Invoke Skill [MANDATORY SKILL DELEGATION]

Invoke the render-html-slides skill with parameters:

Parameter Substitution: Replace placeholders with actual values. Omit optional params that were not provided.

Self-check (all must be YES):

  1. Did I invoke using the Skill tool? [YES/NO]
  2. Did I pass parameters via the args parameter? [YES/NO]
  3. Did I receive output from the skill? [YES/NO]

Read the full file on GitHub · 105 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 · 105 lines · 62 tokens per session scan A 71a75ab3c4bd

Subscribe to this mod's changes

html-slides is an agent published in the GitHub repository cogni-work/insight-wave (12 stars, last pushed yesterday), licensed Apache-2.0. It adds 62 tokens to every session and 822 once invoked, about $0.0003 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 2026-09-04.

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