Install Onyx in Claude Code
claude mcp add onyx -e ONYX_API_URL=... -e ONYX_API_TOKEN=... -- npx -y onyx-mcp{
"mcpServers": {
"onyx": {
"command": "npx",
"args": [
"-y",
"onyx-mcp"
],
"env": {
"ONYX_API_URL": "...",
"ONYX_API_TOKEN": "..."
}
}
}
}Replace each ... with your own value.
Frequently asked questions
What does the Onyx MCP server do?
Secure MCP access to Onyx search, chat, projects, and administration.
Is the Onyx MCP server free?
The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.
Does Onyx run locally or remotely?
Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.
How do I add Onyx to Claude Code?
Run: claude mcp add onyx -e ONYX_API_URL=... -e ONYX_API_TOKEN=... -- npx -y onyx-mcp
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