MCP server
Weights & Biases MCP Server
- 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
Customize > Connectors > Add > Add custom connector, paste this URL and sign in. It syncs to Claude Desktop and mobile. docs
https://mcp.withwandb.com/mcp
The free plan allows one custom connector. On Team and Enterprise an owner adds it under Organization settings > Connectors.
chatgpt.com/plugins > + > Add custom MCP server, paste the URL, set up sign-in and create it as a plugin. Then @-mention it in a chat. docs
https://mcp.withwandb.com/mcp
Workspace admins can turn custom MCP plugins off.
Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project), or use the install button. docs
{
"mcpServers": {
"weights-biases": {
"url": "https://mcp.withwandb.com/mcp"
}
}
}Add to .vscode/mcp.json (note the "servers" key and the type), or use the install button. Command Palette > "MCP: Open User Configuration" for all workspaces. docs
{
"servers": {
"weights-biases": {
"type": "http",
"url": "https://mcp.withwandb.com/mcp"
}
}
}Run codex mcp add weights-biases --url https://mcp.withwandb.com/mcp (then codex mcp login weights-biases), or add this to ~/.codex/config.toml. The CLI, IDE extension and Codex app share it. docs
[mcp_servers.weights-biases] url = "https://mcp.withwandb.com/mcp"
Run in a terminal (-s user adds it for all projects), then /mcp auth to sign in. In ~/.gemini/settings.json the key is httpUrl. docs
gemini mcp add -s user --transport http weights-biases https://mcp.withwandb.com/mcp
Run in a terminal; it writes ~/.copilot/mcp-config.json. docs
copilot mcp add --transport http weights-biases https://mcp.withwandb.com/mcp
Add to mcp_config.json: ~/.config/devin/mcp_config.json on macOS and Linux (older installs: ~/.codeium/windsurf/mcp_config.json), %APPDATA%\devin\ on Windows. docs
{
"mcpServers": {
"weights-biases": {
"serverUrl": "https://mcp.withwandb.com/mcp"
}
}
}Add to Zed's settings.json (or Settings > AI > MCP Servers > Add Server). Remote servers without an Authorization header sign in with OAuth. docs
{
"context_servers": {
"weights-biases": {
"url": "https://mcp.withwandb.com/mcp"
}
}
}Add to opencode.json in the project (or ~/.config/opencode/opencode.json). Sign in with opencode mcp auth weights-biases. docs
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"weights-biases": {
"type": "remote",
"url": "https://mcp.withwandb.com/mcp",
"enabled": true
}
}
}Add to ~/.kiro/settings/mcp.json (all projects) or .kiro/settings/mcp.json (this project). docs
{
"mcpServers": {
"weights-biases": {
"url": "https://mcp.withwandb.com/mcp"
}
}
}MCP Servers > Configure > Configure MCP Servers opens cline_mcp_settings.json; add this entry. docs
{
"mcpServers": {
"weights-biases": {
"type": "streamableHttp",
"url": "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.