# SupWriter

> SupWriter humanizes AI-generated text, paraphrases, fixes grammar, and detects AI authorship.

## Product

- [Home](https://supwriter.com/)
- [Pricing](https://supwriter.com/pricing)
- [Features](https://supwriter.com/features)
- [FAQ](https://supwriter.com/faq)

## Tools

- [AI Humanizer](https://supwriter.com/ai-humanizer): Rewrites AI-generated text into natural, human-sounding prose.
- [AI Detector](https://supwriter.com/ai-detector): Classifies text as AI-generated vs human-written across 12 popular detectors, with sentence-level breakdown.
- [AI Paraphraser](https://supwriter.com/paraphraser): Rewords text while preserving meaning, with standard, formal, casual, academic, and creative modes.
- [Grammar Checker](https://supwriter.com/grammar-checker): Fixes grammar, spelling, and punctuation, with thorough and style modes.

## Features

- [Chrome Extension](https://supwriter.com/chrome-extension): One-click humanizing and AI detection from any website.
- [API](https://supwriter.com/ai-humanizer-api): Authenticated HTTP APIs for humanize, paraphrase, grammar-check, and AI detection.

## Integrations

- [MCP Server](https://supwriter.com/mcp): Connect SupWriter's tools to Claude, ChatGPT, Cursor, Claude Code, VS Code, and other MCP clients over OAuth or a Direct API key. Endpoint: https://supwriter.com/api/mcp.
- [Developer Docs](https://supwriter.com/developers): Full REST API reference — auth, endpoints, errors, rate limits, and plans.

## Discovery

- [API agent skill (skill.md)](https://supwriter.com/skill.md): One markdown doc that teaches an AI coding agent to use the SupWriter REST API (humanize, paraphrase, grammar, detect).
- [Full content (llms-full.txt)](https://supwriter.com/llms-full.txt)
- [AI usage policy (ai.txt)](https://supwriter.com/ai.txt)
- [API catalog](https://supwriter.com/.well-known/api-catalog)
- [A2A agent card](https://supwriter.com/.well-known/agent-card.json)
- [Agent skills](https://supwriter.com/.well-known/agent-skills/index.json)
- [MCP server card](https://supwriter.com/.well-known/mcp/server-card.json)

## Blog

- [All articles](https://supwriter.com/blog)