PlainGrade

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-11-01T16:10:36.051407Z",
      "publishedAt": "2026-11-01T16:10:36.051407Z",
      "statusChangedAt": "2026-11-01T16:10:36.051407Z"
    }
  },
  "server": {
    "name": "dev.workers.mike-tusa.plaingrade-api/plaingrade-api",
    "title": "PlainGrade",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://plaingrade-api.mike-tusa.workers.dev/mcp",
        "type": "streamable-http",
        "headers": [
          {
            "name": "Authorization",
            "isSecret": true,
            "description": "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."
          }
        ]
      }
    ],
    "version": "0.5.1",
    "websiteUrl": "https://plaingrade-api.mike-tusa.workers.dev/",
    "description": "English readability scores (Flesch, Flesch-Kincaid, Fog, SMOG) and text stats. Text never stored."
  }
}