Chess DNA

app.chessdnaPublished by chessdna.appv1.0.0Updated Nov 5, 2026

Chess ratings explained, an Elo calculator, and any Chess.com or Lichess player's recent games.

VerifiedStreamable HTTPWeb executableLocation & LifestyleData & Analytics

Overview

AI-generated overview

Explains chess ratings, calculates Elo changes, and summarizes any Chess.com or Lichess player's recent public games.

What you can do
  • Explain what an Elo, Chess.com or Lichess rating means and how it compares with other online players
  • Calculate rating points won or lost for a win, draw and loss against a given opponent, plus the expected score
  • Summarize a player's recent public games on Chess.com or Lichess: results, rating trend, results by colour and most played openings
When to use it
Useful when someone asks whether a rating is good, wants to know how many points a game against a given opponent is worth, or wants a quick read on a Chess.com or Lichess player's recent form and openings.
Requirements
A remote streamable HTTP endpoint; no account, API key or environment variables are declared.
Before you install
The recent-games tool reads a player's public Chess.com or Lichess game history, so that username is sent to the server and to those platforms. Tool results also link to a third-party analysis site.

Installation

In SourceWeft

  1. Open Chess DNA in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/app.chessdna%2Fchess-dna/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "chess-dna": {
      "type": "http",
      "url": "https://mhmwmgesyguaphniiedp.supabase.co/functions/v1/chess-dna-mcp"
    }
  }
}

Tools

3

rating_meaning

What does a chess rating mean?

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?"

Parametersratingrequired

elo_change

Elo rating change calculator

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.

Parameterskratingrequiredopponentrequired

recent_games

A player's 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.

Parameterssitecountusernamerequired

Version history

1
  1. v1.0.0LatestNov 5, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.