rich-text-editor

rich-text-editor is a skill for Claude Code, Codex from mercuryPark/oc-setup. It costs 31 tokens per session (197 once invoked), scanned A, original, MIT.

A guide for adding a rich-text editor, which lets users format content with features such as headings, images, and collaborative editing, to a web application.

In plain words
What is it for?
Integrating TipTap or Slate.js, adding image upload and resizing, supporting alt text and lazy loading, enabling collaboration with Yjs, and exporting content as HTML or Markdown.
Why use it?
It gives implementation patterns for choosing an editor and handling stored content, images, and simultaneous edits.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Integrating TipTap or Slate.js, adding image upload and resizing, supporting alt text and lazy loading, enabling collaboration with Yjs, and exporting content as HTML or Markdown.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mercurypark/oc-setup/rich-text-editor
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.

Any agent
npx skills add mercuryPark/oc-setup --skill rich-text-editor
Clone the repo
git clone --depth 1 https://github.com/mercuryPark/oc-setup

Made for: Claude Code, Codex.

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 rich-text-editor

README.md
[![agentmods](https://agentmods.dev/badge/skills/mercurypark/oc-setup/rich-text-editor/github.svg)](https://agentmods.dev/skills/mercurypark/oc-setup/rich-text-editor)
Your own site
<a href="https://agentmods.dev/skills/mercurypark/oc-setup/rich-text-editor"><img src="https://agentmods.dev/badge/skills/mercurypark/oc-setup/rich-text-editor/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for rich-text-editor

Your own site · 80×15
<a href="https://agentmods.dev/skills/mercurypark/oc-setup/rich-text-editor"><img src="https://agentmods.dev/badge/skills/mercurypark/oc-setup/rich-text-editor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 197 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 $0.00031 $0.00197
Opus 5 $0.00015 $0.00098
Sonnet 5 $0.00006 $0.00039
Haiku 4.5 $0.00003 $0.00020

Measured 9d ago against content hash 80e3afa3381a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

rich-text-editor 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 9d 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.

templates/skills/rich-text-editor/SKILL.md · 43 lines

What it actually says

Rich Text Editor Integration

Editor Selection

Recommended: TipTap

import { Editor } from '@tiptap/react'
import StarterKit from '@tiptap/starter-kit'

const editor = new Editor({
  extensions: [StarterKit],
  content: '<p>Hello World</p>',
})

Alternative: Slate.js

  • More flexible but steeper learning curve
  • Better for complex custom behaviors

Features

Image Handling

  • Drag & drop upload
  • Image resizing
  • Alt text support
  • Lazy loading

Collaborative Editing

  • Use Yjs for real-time collaboration
  • Conflict resolution
  • Cursor awareness

Output Format

  • Store as JSON (recommended)
  • Convert to HTML for display
  • Support markdown export
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. 9d ago First seen · 43 lines · 31 tokens per session scan A 80e3afa3381a

Subscribe to this mod's changes

rich-text-editor is a skill published in the GitHub repository mercuryPark/oc-setup (2 stars, last pushed 4mo ago), licensed MIT. It adds 31 tokens to every session and 197 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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