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PlainGrade

Official registry Other

English readability scores (Flesch, Flesch-Kincaid, Fog, SMOG) and text stats. Text never stored.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http plaingrade 'https://plaingrade-api.mike-tusa.workers.dev/mcp' --header 'Authorization: <Optional. '\''Bearer <key>'\'': a free key (POST /v1/keys) or a PlainGrade Pro license key (PGPR-..., $5/mo via Polar) for higher limits. Works without a key.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "plaingrade": {
            "type": "http",
            "url": "https://plaingrade-api.mike-tusa.workers.dev/mcp",
            "headers": {
                "Authorization": "<Optional. 'Bearer <key>': a free key (POST /v1/keys) or a PlainGrade Pro license key (PGPR-..., $5/mo via Polar) for higher limits. Works without a key.>"
            }
        }
    }
}

Frequently asked questions

What is PlainGrade?

English readability scores (Flesch, Flesch-Kincaid, Fog, SMOG) and text stats. Text never stored.

How do I install PlainGrade?

It runs as a remote server. In Claude Code: claude mcp add --transport http plaingrade 'https://plaingrade-api.mike-tusa.workers.dev/mcp' --header 'Authorization: <Optional. '\''Bearer <key>'\'': a free key (POST /v1/keys) or a PlainGrade Pro license key (PGPR-..., $5/mo via Polar) for higher limits. Works without a key.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does PlainGrade need an API key?

Yes. It expects Authorization, which you set in its configuration.

Who maintains PlainGrade?

It is published by dev.workers.mike-tusa.plaingrade-api. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.