Think-In-HTML: Instructions file for Claude Code

CLAUDE.md

Think-In-HTML CLAUDE.md is an instructions file for Claude Code from vibhusharma101/Think-In-HTML. It costs 718 tokens per session, scanned A, original, MIT.

Project instructions for Think-In-HTML, a tool that turns text, code, or AI reasoning transcripts into interactive HTML explainers that work offline.

In plain words
What is it for?
Use them when creating or updating explainers, running the build and validation checks, or maintaining the freeform and legacy blocks modes.
Why use it?
They preserve the project’s two generation modes and ensure each output is a complete single file with no external resources.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions Claude Code; mentions Codex.

This is vibhusharma101/Think-In-HTML's own configuration. It tells Claude Code how to work on Think-In-HTML itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Think-In-HTML configures →

Reuse

Borrowing it

Nothing to install: this file belongs to vibhusharma101/Think-In-HTML. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/vibhusharma101/Think-In-HTML/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/vibhusharma101/Think-In-HTML

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.

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README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/vibhusharma101/think-in-html/claude-md"><img src="https://agentmods.dev/badge/instructions/vibhusharma101/think-in-html/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 718 This file is loaded in full into every session.
When invoked 718 The same file — it is already loaded in full.
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 $0.00718 $0.00718
Opus 5 $0.00359 $0.00359
Sonnet 5 $0.00144 $0.00144
Haiku 4.5 $0.00072 $0.00072

Measured 10d ago against content hash 669ae3f9c5b1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

Think-In-HTML CLAUDE.md 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 10d 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.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Think-In-HTML

A tool-agnostic engine that turns code, AI thinking transcripts, or text into self-contained interactive HTML explainers.

There are two generation modes. Freeform is the default.

Freeform mode (default) — the AI authors the whole page on the fly

target input → AI reads core/instructions/FREEFORM.md → writes a bespoke output.html → check-html.mjs validates self-containment

The AI designs and builds a complete, unique, interactive HTML explainer per subject — its own layout, visual system, and an interactive model of the subject's core mechanic. No two outputs look alike. The only hard invariant is that the file is a single self-contained artifact that works offline.

  • core/instructions/FREEFORM.md — the rubric: "make the core mechanic tangible", the variety mandate, and the hard self-contained safety constraints.
  • core/build/check-html.mjs — zero-dep validator that rejects any external resource load (external <script>/<link>/<img>, @import, remote url()), requires the CSP meta and a doctype. This is the gate that replaces schema validation for freeform.
  • examples/*.freeform.html — worked references at the intended quality bar (e.g. novus-pricing-desk.freeform.html).

Blocks mode (--blocks) — legacy templated engine

target → AI reads core/instructions/ANALYZE.md → analysis.json (schema-validated) → HTML shell renders it → one output.html
  • core/template/ — the tested HTML+CSS+JS renderer (shell.html, app.js, styles.css)
  • core/schema/analysis.schema.json — the contract between block JSON and the renderer
  • core/build/inline.mjs — zero-dep script that inlines everything into one .html
  • Supports an AI-authored design theme (ANALYZE.md → Step 3) plus 4 preset skins.

adapters/ — thin per-tool configs (Claude Code, Cursor, Codex, etc.).

Commands

  • /think-in-html <target> — freeform bespoke explainer (default)
  • /think-in-html <target> --blocks — legacy templated explainer

Build / validate

Read the full file on GitHub · 64 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. 10d ago First seen · 64 lines · 718 tokens per session scan A 669ae3f9c5b1

Subscribe to this mod's changes

Think-In-HTML CLAUDE.md is an instructions file published in the GitHub repository vibhusharma101/Think-In-HTML (6 stars, last pushed 1mo ago), licensed MIT. It adds 718 tokens to every session, about $0.0036 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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