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Lexicon

io.github.ashlrai/lexicon ยท v0.5.4

Fixes the names and jargon speech-to-text gets wrong before your agent acts on a dictated prompt.

Website Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add lexicon -e LEXICON_PATH=<LEXICON_PATH> -e LEXICON_CWD=<LEXICON_CWD> -- npx -y @ashlr/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "lexicon": {
      "command": "npx",
      "args": [
        "-y",
        "@ashlr/[email protected]"
      ],
      "env": {
        "LEXICON_PATH": "<LEXICON_PATH>",
        "LEXICON_CWD": "<LEXICON_CWD>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "lexicon": {
      "command": "npx",
      "args": [
        "-y",
        "@ashlr/[email protected]"
      ],
      "env": {
        "LEXICON_PATH": "<LEXICON_PATH>",
        "LEXICON_CWD": "<LEXICON_CWD>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "lexicon": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@ashlr/[email protected]"
      ],
      "env": {
        "LEXICON_PATH": "<LEXICON_PATH>",
        "LEXICON_CWD": "<LEXICON_CWD>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
LEXICON_PATH
Optional		Path to the global lexicon YAML. Defaults to $XDG_CONFIG_HOME/lexicon/lexicon.yaml, else ~/.config/lexicon/lexicon.yaml.
LEXICON_CWD
Optional		Directory used to locate the project .lexicon.yaml. Defaults to the server process working directory.

Details

Package@ashlr/[email protected] (NPM, stdio)
First published28 Sep 2026
Last updated28 Sep 2026
Registry nameio.github.ashlrai/lexicon

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