frontend-markdown-rendering

Render final assistant responses as sanitized Markdown with KaTeX, Mermaid, and tables.

7|1|Updated May 9, 2026

Search Tags:#markdown #frontend #mermaid #sanitization #katex #assistant ui #workspace images

Ready to run

npx skills add https://github.com/black-yt/skills --skill frontend-markdown-rendering

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: frontend-markdown-rendering
Source: https://github.com/black-yt/skills/tree/main/frontend-markdown-rendering
Command: npx skills add https://github.com/black-yt/skills --skill frontend-markdown-rendering

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps frontend applications display final assistant responses as rich Markdown while keeping tool logs, JSON, traces, and intermediate output as plain text, so the UI stays readable and safe.

Core Features & Use Cases

Assistant-only Markdown rendering: Render only the final assistant message as Markdown instead of formatting every streaming chunk or tool output.
Rich content support: Handle tables, code blocks, images, KaTeX formulas, and Mermaid diagrams with sane defaults and layout limits.
Security and workspace safety: Sanitize HTML, avoid direct file exposure, and load local workspace images through a protected backend route.
Use Case: A product team building a chat UI can show polished answers with math and diagrams while preventing script injection and broken layouts.

Quick Start

Ask the assistant to render final answer messages as sanitized Markdown with KaTeX, Mermaid, table support, and secure workspace image loading.

Frequently Asked Questions about frontend-markdown-rendering

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I render assistant markdown in a chat UI without formatting tool logs and JSON output?▼

Render only the final assistant message as markdown while preserving tool logs, JSON, and intermediate traces as plain text. This approach keeps frontend chat interfaces readable by formatting rich content separately from raw output.

What is the best way to securely display markdown tables, code blocks, and images in a frontend assistant interface?▼

Use a markdown rendering approach that includes HTML sanitization and protected backend file access for workspace images. This secures frontend assistant interfaces while displaying tables, code blocks, and images with layout constraints to prevent broken formatting.

Does markdown rendering support Mermaid diagrams and KaTeX formulas in frontend assistant responses?▼

Yes, markdown rendering supports Mermaid SVG diagrams and KaTeX formulas in frontend assistant responses. It applies layout limits to ensure these rich content elements display correctly without breaking the chat interface layout.

How do I prevent script injection when rendering markdown in an assistant chat application?▼

Prevent script injection during markdown rendering by applying strict HTML sanitization to the assistant output. Additionally, load local workspace images through a protected backend route to avoid direct file exposure and potential security vulnerabilities.

Can I apply markdown rendering to streaming chunks in a frontend chat interface?▼

This markdown rendering targets only the final assistant message, not every streaming chunk. It prevents formatting intermediate traces and tool outputs, ensuring the frontend chat interface remains readable during streaming.

What layout constraints are needed for markdown rendering of Mermaid SVG and tables in chat UIs?▼

Markdown rendering requires explicit layout constraints for Mermaid SVG, tables, images, and code blocks to prevent broken layouts. These constraints ensure rich content fits within the frontend chat interface without disrupting the overall UI structure.