PlainGrade is answering right now. Last checked 11 min ago. It exposes 1 tools.
English readability scores (Flesch, Flesch-Kincaid, Fog, SMOG) and text stats. Text never stored.
What changed 4
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 16 October 2026. No other catalogue keeps this.
Nothing serious here today
Today is the operative word: we check PlainGrade every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.
claude mcp add plaingrade-api --transport http https://plaingrade-api.mike-tusa.workers.dev/mcphttps://plaingrade-api.mike-tusa.workers.dev/mcp[mcp_servers.plaingrade-api]
url = "https://plaingrade-api.mike-tusa.workers.dev/mcp"{
"mcpServers": {
"plaingrade-api": {
"url": "https://plaingrade-api.mike-tusa.workers.dev/mcp"
}
}
}{
"servers": {
"plaingrade-api": {
"type": "http",
"url": "https://plaingrade-api.mike-tusa.workers.dev/mcp"
}
}
}Available tools 1
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
score_readability
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://plaingrade-api.mike-tusa.workers.dev/mcp | streamable-http | answering | 140 ms | 11 min ago |
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PlainGrade — questions
Answers built from our own checks of this server.