# Weights & Biases — MCP server on mcp.ai
> Connect your Weights & Biases account and use 10 tools for developer tools straight from your AI agent. Connect with your own API key. Read W&B Models projects, runs, sweeps, artifact types, reports, automations, integrations, teams, and organizations through the W&B Cloud GraphQL API.

By: mcp.ai · official
Page: https://mcp.ai/weights_and_biases

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_weights_and_biases?ms=1787291400000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/weights_and_biases/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/weights_and_biases/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/weights_and_biases/skill.md
Postman collection (v2.1): https://mcp.ai/weights_and_biases/postman.json

## Tools
- weights_and_biases_get_current_viewer() — Return the authenticated W&B user, default entity, and team names for connection context.
- weights_and_biases_get_organization(organization_name: string) — Return a W&B organization's identifiers and organization entity by exact name.
- weights_and_biases_get_team(team_name: string) — Return a W&B team's identity and bounded membership metadata by exact team entity name.
- weights_and_biases_list_artifact_types(cursor?: string, entity: string, project: string, per_page?: integer) — Return one page of artifact types defined in a W&B project.
- weights_and_biases_list_automations(cursor?: string, entity: string, per_page?: integer) — Return one page of W&B automations accessible under an entity.
- weights_and_biases_list_integrations(cursor?: string, entity: string, per_page?: integer) — List one page of Slack workspace/channel metadata and webhook integration names for a W&B entity. Webhook URLs and credentials are excluded.
- weights_and_biases_list_projects(cursor?: string, entity: string, per_page?: integer) — Return one page of W&B projects visible under an entity.
- weights_and_biases_list_reports(cursor?: string, entity: string, project: string, per_page?: integer) — Return one page of beta W&B reports for a project.
- weights_and_biases_list_runs(cursor?: string, entity: string, project: string, per_page?: integer) — List one page of runs with IDs, display names, states, and creation times. Does not return run config, metrics, or history.
- weights_and_biases_list_sweeps(cursor?: string, entity: string, project: string, per_page?: integer) — Return one page of hyperparameter sweeps from a W&B project when sweeps are enabled for the account.

## Example prompts
- "What can I do in Weights & Biases?"
- "Show me a summary of my Weights & Biases account"

## Links
Docs: https://mcp.ai/docs/mcps/weights_and_biases
Website: https://mcp.ai/mcps/weights_and_biases