Install Neo4j Canary in Augment Code

What you need first

• Augment Code, installed.
• uv, which gives the uvx command the server starts with.
• Your own values for YOUR_NEO4J_URI,YOUR_NEO4J_USERNAME,YOUR_NEO4J_PASSWORD,YOUR_NEO4J_DATABASE.

Steps

1. Open ~/.codex/config.toml, or create it. The Codex CLI, its IDE extension and the ChatGPT desktop app share this file.
2. Add this table at the end of the file.

{
  "mcpServers": {
    "neo4j-mcp-canary": {
      "command": "uvx",
      "args": ["neo4j-mcp-canary==0.2.3"],
      "env": { "NEO4J_URI": "YOUR_NEO4J_URI", "NEO4J_USERNAME": "YOUR_NEO4J_USERNAME", "NEO4J_PASSWORD": "YOUR_NEO4J_PASSWORD", "NEO4J_DATABASE": "YOUR_NEO4J_DATABASE" }
    }
  }
}

3. Replace YOUR_NEO4J_URI,YOUR_NEO4J_USERNAME,YOUR_NEO4J_PASSWORD,YOUR_NEO4J_DATABASE with your own values.
4. Save the file and restart Augment Code.

Check it worked

Ask Augment Code: List the tools of neo4j-mcp-canary.

If it does not start

spawn uvx ENOENT

uv is not on the PATH that Augment Code sees. Install it, or write the full path of uvx in the config.

The server starts, but its tools fail

A YOUR_… placeholder is still in the config, or its value is wrong.

Nothing changes after a restart

The file is not valid JSON any more. Look for a missing comma where the block was added.