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Connect an AI tool

Mostly Right supports MCP for people who want an AI tool to work with public datasets. The AI provider and its subscription remain yours. Mostly Right authorizes data access separately.

In the app, open Settings → AI tools or a connected dataset’s Use with AI section. Choose Connect an AI tool.

  1. Sign in to Mostly Right.
  2. Select the workspace the AI tool may use.
  3. Review the workspace permission.
  4. Return to your MCP client.

The client receives OAuth credentials, not an mr_use_ API key. The credentials are workspace-scoped and checked against current workspace membership on every request.

The public MCP server exposes a small set of data actions:

  • mostlyright_search_public_datasets
  • mostlyright_get_dataset
  • mostlyright_get_table_schema
  • mostlyright_use_dataset
  • mostlyright_preview_table
  • mostlyright_query_table
  • mostlyright_get_current_download

Search and metadata do not need a workspace connection. Querying a table does. If a dataset is not connected to the selected workspace, the client asks you to approve Use dataset before it reads data.

Results include the dataset, table, immutable version, content digest, and query time so an agent can cite what it used. MCP never accepts an mr_use_ key. For a complete Parquet snapshot, use the Public Dataset API from an application or script; mostlyright_get_current_download explains this rather than asking an AI tool for a key.

Open Settings → AI tools, find the client, and choose Disconnect. The connection stops immediately. Removing a dataset from the workspace also stops the client from reading that dataset.

For applications, scripts, and notebooks, use the Public Dataset API instead of MCP.