HumanTone

What is HumanTone?

HumanTone is the official Model Context Protocol server for HumanTone, an AI text humanizer that rewrites AI-generated content to sound more natural. It brings HumanTone’s humanize and AI likelihood tools directly into Claude Desktop, Cursor, Cline, and other MCP clients using a single API key and the same credits as the web app.

How to use HumanTone?

No installation is needed – the client downloads the package on first launch via npx humantone-mcp. Configure the MCP client with a JSON snippet that sets command to npx, args to ["-y", "humantone-mcp"], and env with your HUMANTONE_API_KEY. Then restart the client and prompt the assistant naturally to use the tools.

Key features of HumanTone

• Rewrites AI text to sound more natural and human-written
• Supports custom instructions for tone, audience, and terminology
• Detects AI likelihood of text on a 0–100 scale
• AI detection does not consume credits (30 checks/day)
• Shows current plan, credits, and subscription status
• Works with any MCP-compatible client

Use cases of HumanTone

• Humanize AI-generated drafts before publishing or sharing
• Check if a piece of text is likely AI-written for content review
• Adjust writing tone (e.g., formal, casual) while preserving key terms
• Monitor account credit usage and subscription details from the assistant
• Integrate humanization and detection directly into coding workflows

FAQ from HumanTone

Why don’t the tools appear in my assistant?

Confirm the JSON configuration has no syntax errors, then fully quit and reopen the MCP client – a window refresh is not enough.

What does “Invalid API key format” mean?

HumanTone API keys are 67 characters: ht_ followed by 64 hex characters. Generate a new one at app.humantone.io/settings/api if unsure.

Why do I get “Plan does not include API access”?

Free trial accounts cannot use the API. You need a paid HumanTone plan; view options at humantone.io/pricing.

I get “npx: command not found”. What do I do?

Install Node.js version 18 or later from nodejs.org.

How many AI detection checks can I do per day?

30 checks per day, shared with the HumanTone web app. Detection does not consume credits.