MCP Server
Use Sapling's grammar checking, AI content detection, paraphrasing, and other language tools directly from Claude, Claude Code, and any other MCP-compatible AI assistant.
What is the Sapling MCP Server?
The Model Context Protocol (MCP) is an open standard that lets AI assistants like Claude call external tools and APIs in a structured way. The Sapling MCP Server exposes Sapling's language tools as MCP tools, so you can ask Claude to grammar-check a document, detect AI-generated content, paraphrase a sentence, or analyze sentiment — all without leaving your AI assistant.
Available Tools
Grammar & Spell Check Popular
Catch grammar errors, spelling mistakes, punctuation issues, and style problems in any text. Returns edit suggestions with types (preposition, verb tense, etc.) and confidence scores.
AI Content Detection
Detect whether text was written by a human or generated by GPT-5, Claude 4.5, Gemini 2.5, Qwen3, DeepSeek-V3, or other AI models. Returns an overall score plus per-sentence predictions.
Paraphrase & Rephrase
Rewrite text with different tone, formality level, or style while preserving meaning. Useful for adapting content for different audiences.
Sentiment Analysis
Classify text as positive, negative, or neutral. Useful for reviewing customer feedback, tickets, or social media posts within an AI workflow.
Language Detection
Identify the language of a text snippet. Supports 30+ languages including English, Spanish, French, German, Chinese, Japanese, Arabic, and more.
Summarization
Generate concise summaries of longer documents, emails, or articles. Configurable summary length and style.
Quick Setup
Add the Sapling MCP server to your Claude Desktop or Claude Code configuration. Replace YOUR_API_KEY with your Sapling API key.
Claude Desktop — add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):
{
"mcpServers": {
"sapling": {
"command": "npx",
"args": ["-y", "@saplingai/mcp-server"],
"env": {
"SAPLING_API_KEY": "YOUR_API_KEY"
}
}
}
}Claude Code — run in your terminal:
claude mcp add -e SAPLING_API_KEY=YOUR_API_KEY sapling \
-- npx -y @saplingai/mcp-serverOnce configured, you can ask Claude things like:
- "Check this email for grammar errors"
- "Is this resume AI-generated?"
- "Paraphrase this paragraph in a more formal tone"
- "What's the sentiment of these customer reviews?"
Enterprise Security
Optional no-data-retention mode. On-premises deployment available for HIPAA and PCI compliance.
Low Latency
Sapling's API is optimized for real-time use. Grammar checks typically return in under 200 ms.
Multilingual
Grammar checking and language detection across 30+ languages including Chinese, German, Spanish, Japanese, and more.