looker-query
“looker-query” runs an inline query using the Looker semantic model.
About
The looker-query tool runs a query using the Looker
semantic model.
It’s compatible with the following sources:
looker-query takes eight parameters:
- the
model - the
explore - the
fieldslist - an optional set of
filters - an optional set of
pivots - an optional set of
sorts - an optional
limit - an optional
tz
Starting in Looker v25.18, these queries can be identified in Looker’s System Activity. In the History explore, use the field API Client Name to find MCP Toolbox queries.
Example
tools:
query:
kind: looker-query
source: looker-source
description: |
This tool runs a query against a LookML model and returns the results in JSON format.
Required Parameters:
- model_name: The name of the LookML model (from `get_models`).
- explore_name: The name of the explore (from `get_explores`).
- fields: A list of field names (dimensions, measures, filters, or parameters) to include in the query.
Optional Parameters:
- pivots: A list of fields to pivot the results by. These fields must also be included in the `fields` list.
- filters: A map of filter expressions, e.g., `{"view.field": "value", "view.date": "7 days"}`.
- Do not quote field names.
- Use `not null` instead of `-NULL`.
- If a value contains a comma, enclose it in single quotes (e.g., "'New York, NY'").
- sorts: A list of fields to sort by, optionally including direction (e.g., `["view.field desc"]`).
- limit: Row limit (default 500). Use "-1" for unlimited.
- query_timezone: specific timezone for the query (e.g. `America/Los_Angeles`).
Note: Use `get_dimensions`, `get_measures`, `get_filters`, and `get_parameters` to find valid fields.
The result of the query tool is JSON
Reference
| field | type | required | description |
|---|---|---|---|
| kind | string | true | Must be “looker-query” |
| source | string | true | Name of the source the SQL should execute on. |
| description | string | true | Description of the tool that is passed to the LLM. |