List Databases
spanner.list_databases
ActionGoogle Cloudconnection required
Calls Spanner REST GET /projects/{project}/instances/{instance}/databases.
List databases in a Spanner instance.
Connection
- Required
- Yes — the node will not save without one
- Auth type
- OAuth 2.0
- Providers
- Google Cloud Spanner
- Secret shape
- {"client_id", "client_secret", "refresh_token"}
- Config it needs
- project_id, instance, database
- Resolved by
- config.connection_id, else node.connection_id
Configuration
3 fields, none required. A dotted path is a nested object and name[] an array of objects — the editor renders the same tree.
| Field | Type | Required | Default | Constraints | Example |
|---|---|---|---|---|---|
project_id GCP project id (overrides connection). | string | No | — | — | — |
instance Spanner instance id (overrides connection). | string | No | — | — | — |
page_size Max databases to return. | number | No | 100 | ≥ 1 | — |
Example configuration
Every value below is the contract’s own example or default — nothing invented.
{
"page_size": 100
}Output
One shape.
result
| Field | Type | Example |
|---|---|---|
databases | array | — |
count | number | — |
{
"count": 0,
"databases": []
}Related Google Cloud Spanner nodes
See List Databases run in a workflow.
In a technical demo we add the Google Cloud Spanner connection, drop the node on the canvas and let Workflow Health pre-flight it before the first real run.