# Query public data.

Use the right source, units and period for the requested comparison.

Updated: 2026-09-21.
## Clarify the request

Ask for the subject, source, entities, indicator, units and period. Do not fabricate missing identifiers, reference assets or file URLs.

## Choose a published tool

Use [discovery](/docs/discovery) and the [relevant catalog](/tools/finance). Inspect the selected tool’s availability, complete input schema, pricing unit and reservation before execution. If no available tool fits, explain the missing capability instead of claiming a result.

## Execute with authority

Use an authenticated workspace. Confirm the required inputs, downstream effects and spending decision; keep a unique idempotency key for this intention. A public discovery connection alone cannot execute the tool.

## Read and recover

Keep source attribution, units, dates and missing values with the answer. A published dataset may lag real time; avoid inventing the latest value.

On a retryable failure, preserve the run ID and idempotency key. On missing permission, input or credit, stop for the relevant decision. [Error recovery](/docs/errors) · [Asynchronous executions](/docs/async).

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