app.chessdna/chess-dnav1.0.0 Domain verified
Chess ratings explained, an Elo calculator, and any Chess.com or Lichess player's recent games.
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https://mhmwmgesyguaphniiedp.supabase.co/functions/v1/chess-dna-mcp
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Tool list from our last check. Connect live to refresh it.
elo_change Read-only
Calculates how many rating points a player wins or loses for a win, draw and loss against an opponent, using the Elo formula. Also returns the expected score.
The player's rating
The opponent's rating
K-factor (default 20; FIDE uses 40 for new players, 20 normally, 10 above 2400)
Install
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
Run in a terminal
claude mcp add --transport http chess-dna https://mhmwmgesyguaphniiedp.supabase.co/functions/v1/chess-dna-mcp
Tools (3)
elo_changeCalculates how many rating points a player wins or loses for a win, draw and loss against an opponent, using the Elo formula. Also returns the expected score.
read-only
elo_change
Calculates how many rating points a player wins or loses for a win, draw and loss against an opponent, using the Elo formula. Also returns the expected score.
| Argument | Type | Description |
|---|---|---|
| k | integer | K-factor (default 20; FIDE uses 40 for new players, 20 normally, 10 above 2400) |
| rating* | integer | The player's rating |
| opponent* | integer | The opponent's rating |
Input schema (JSON)
{
"type": "object",
"required": [
"rating",
"opponent"
],
"properties": {
"k": {
"type": "integer",
"maximum": 100,
"minimum": 1,
"description": "K-factor (default 20; FIDE uses 40 for new players, 20 normally, 10 above 2400)"
},
"rating": {
"type": "integer",
"maximum": 3500,
"minimum": 100,
"description": "The player's rating"
},
"opponent": {
"type": "integer",
"maximum": 3500,
"minimum": 100,
"description": "The opponent's rating"
}
}
}rating_meaningExplains what a chess rating (Elo, Chess.com or Lichess) means: whether it is good, where it sits among online players, and a link to the full guide for that level. Use for questions like "is 1200 a good chess rating?"
read-only
rating_meaning
Explains what a chess rating (Elo, Chess.com or Lichess) means: whether it is good, where it sits among online players, and a link to the full guide for that level. Use for questions like "is 1200 a good chess rating?"
| Argument | Type | Description |
|---|---|---|
| rating* | integer | The rating, e.g. 1200 |
Input schema (JSON)
{
"type": "object",
"required": [
"rating"
],
"properties": {
"rating": {
"type": "integer",
"maximum": 3500,
"minimum": 100,
"description": "The rating, e.g. 1200"
}
}
}recent_gamesSummarizes a player's recent public games on Chess.com or Lichess: wins, draws and losses, rating trend, results by colour, and most played openings. Links to a free Chess DNA analysis of the player's strengths and weaknesses.
read-only
recent_games
Summarizes a player's recent public games on Chess.com or Lichess: wins, draws and losses, rating trend, results by colour, and most played openings. Links to a free Chess DNA analysis of the player's strengths and weaknesses.
| Argument | Type | Description |
|---|---|---|
| site | string | Which site (default chesscom) |
| count | integer | How many recent games (default 30) |
| username* | string | Chess.com or Lichess username |
Input schema (JSON)
{
"type": "object",
"required": [
"username"
],
"properties": {
"site": {
"enum": [
"chesscom",
"lichess"
],
"type": "string",
"description": "Which site (default chesscom)"
},
"count": {
"type": "integer",
"maximum": 100,
"minimum": 5,
"description": "How many recent games (default 30)"
},
"username": {
"type": "string",
"maxLength": 40,
"minLength": 2,
"description": "Chess.com or Lichess username"
}
}
}Security checkA100/100
We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 5, 2026.
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