How does this improve Claude's performance?

By using the declarative tool, Claude generates visual feedback in milliseconds without additional API token costs, making the assistant feel more responsive.

What is the difference between the declarative and LLM-based versions?

The declarative version uses code-based rendering for instant, deterministic, and cost-free output. The LLM-based version is legacy and should only be used if specific context-aware formatting is required.

What specific UI components are available?

The library includes badges, issue boxes, data tables, timelines, progress bars, alert boxes, code diffs, feature flag matrices, calendars, and dashboard grids.

Can I customize the colors of terminal boxes?

Yes, the formatter supports a standard set of semantic colors including blue, yellow, magenta, cyan, green, and gray for different information types.

ANSI Terminal UI Formatter

Name: ANSI Terminal UI Formatter
Author: alexisvincent

byalexisvincent

0•

Developer Tools

Generates rich, structured terminal output from XML markup to enhance Claude's user interactions and feedback.

This skill provides a comprehensive library of terminal UI components—including badges, tables, progress bars, and dashboards—that allow Claude to present complex data in a highly readable ANSI-formatted layout. By leveraging a declarative XML-to-ANSI engine, it ensures fast, deterministic, and visually appealing terminal interfaces for task management, system monitoring, and developer workflows. It is particularly useful for transforming raw data into intuitive visual summaries directly within the command line interface, significantly improving the developer experience during interactive sessions.

Key Features

01Visual status indicators via badges, progress bars, and alert boxes

020 GitHub stars

03Specialized views for project management, issue tracking, and triage

04Multi-metric dashboard grids and calendar views for structured scheduling

05Extensive component library including tables, timelines, and code diffs

06Declarative XML-to-ANSI rendering for instant, zero-cost terminal output

Use Cases

01Displaying structured code changes and feature flag matrices during development

02Visualizing complex project management data like Linear issue lists and sprint statuses

03Monitoring system health and deployment progress through timelines and alert boxes

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add alexisvincent/mia ansi-formatter-usage

For use in Claude.ai and ChatGPT

Download Skill