MCP server

Give your AI agent a complete writing check.

One URL and one API key, and your agent runs the same plagiarism, grammar, citation and AI-content checks as the Silvertext app, before a draft ships.

The same report and scores the app produces
Most checks finish inside the call
One key and one credit balance for REST and MCP

Endpointhttps://api.silvertext.com/mcp

Send your key as a Bearer token. Claude and ChatGPT connectors sign in with OAuth, so use a client that takes headers for now.

Get an API key Developer docs

Connect your client

terminal

$ claude mcp add --transport http silvertext https://api.silvertext.com/mcp --header "Authorization: Bearer YOUR_API_KEY"

~/.cursor/mcp.json

{
  "mcpServers": {
    "silvertext": {
      "url": "https://api.silvertext.com/mcp",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}

.vscode/mcp.json

{
  "inputs": [
    {
      "type": "promptString",
      "id": "silvertext-key",
      "description": "Silvertext API key",
      "password": true
    }
  ],
  "servers": {
    "silvertext": {
      "type": "http",
      "url": "https://api.silvertext.com/mcp",
      "headers": {
        "Authorization": "Bearer ${input:silvertext-key}"
      }
    }
  }
}

terminal

$ gemini mcp add --transport http --header "Authorization: Bearer YOUR_API_KEY" silvertext https://api.silvertext.com/mcp

terminal

$ export SILVERTEXT_API_KEY=YOUR_API_KEY
$ codex mcp add silvertext --url https://api.silvertext.com/mcp --bearer-token-env-var SILVERTEXT_API_KEY

Customize > Connectors > Add custom connector

Name: Silvertext
Remote MCP server URL: https://api.silvertext.com/mcp
Authentication: No sign-in
Request headers: authorization = Bearer YOUR_API_KEY

Request headers is a beta some Claude organizations have. Without it, Claude connectors sign in with OAuth only, so use Claude Code or another client that takes headers.

Then ask your agent

Check this draft for plagiarism and fix the citations in APA
Run a grammar and clarity check on my cover letter, no AI-content pass
How many credits do I have left?

Questions

What is an MCP server?

The Model Context Protocol is the open standard AI assistants use to call outside tools. Add this server to your client and your agent can use Silvertext directly.

Which clients work?

Any client that supports remote MCP servers: Claude, ChatGPT, Cursor, VS Code, Codex, Gemini CLI, Windsurf and more.

Does it cost anything?

Calls use your account's credits, the same as the website and the API. Reading your usage is free.

What happens to what I send?

It's used to answer the call, the same as a request on the website, and handled the way the privacy policy describes.

Is it the same as the REST API?

Yes. Every tool call is the REST call it wraps, with the same key, scopes, credit balance, limits and error codes. A key made for the API works here unchanged.

What if a check takes longer than the call?

The submit waits up to 55 seconds and most checks finish inside it. A longer one comes back with its check id, and the agent reads it later with silvertext_get_check at no cost.