MCP server

Weights & Biases MCP Server

Query W&B experiment runs and Weave traces, and write reports. Official: built and maintained by Weights & Biases. It runs as a hosted remote server: nothing to install. Setup below for 13 clients (checked 2026-10-25). Repo and registry data checked 2026-10-24.
Maintainer
Official · Weights & Biases
Runs
Remote
GitHub
★ 72, last push 2026-10-22 (checked 2026-10-24)
License
MIT
URL
https://mcp.withwandb.com/mcp
Connects to
Weights & Biases

Install the Weights & Biases MCP Server

Pick your client. Remote first: nothing to install, and you sign in with OAuth where the client supports it. Config shapes checked against each client's docs on 2026-10-25.

Run in a terminal, then /mcp inside Claude Code to sign in. Add --scope project to share it via .mcp.json. docs

claude mcp add --transport http weights-biases https://mcp.withwandb.com/mcp

Security notes

  • The remote server runs at mcp.withwandb.com, hosted by Weights & Biases. You sign in with OAuth in clients that support it, and it acts with your account's permissions.
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FAQ

What does the Weights & Biases MCP Server do?+

Query W&B experiment runs and Weave traces, and write reports.

Is the Weights & Biases MCP server official?+

Official: built and maintained by Weights & Biases.

How do I add Weights & Biases to Claude Code?+

Run: claude mcp add --transport http weights-biases https://mcp.withwandb.com/mcp, then /mcp inside Claude Code to sign in. Add --scope project to share it with your team through .mcp.json.

How do I use the Weights & Biases MCP server in Cursor or VS Code?+

Open the Cursor or VS Code tab above: it has the mcp.json entry and a one-click install link. Cursor uses the "mcpServers" key; VS Code uses "servers" and needs a type ("http").

Does Weights & Biases work in ChatGPT and claude.ai?+

Yes, it has a remote URL (https://mcp.withwandb.com/mcp). In claude.ai add it under Customize > Connectors > Add custom connector; in ChatGPT under chatgpt.com/plugins > Add custom MCP server.

What are the alternatives to the Weights & Biases MCP server?+

Other ai & memory MCP servers: MiniMax, Hugging Face, ElevenLabs, Graphiti and Mem0 / OpenMemory.

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