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by startups.studio

by Startups.Studio

Product What you sell Product Dataset

Dataset.backfill

POST /{namespace}/datasets/{dataset}/backfill

Backfill reads one Source of a Dataset over a past date range and records every value observed in it.

Noun: Dataset
Mode: do
Event: Dataset.backfilled

You, to your agent

Backfill the latest dataset with a source.

curl -X POST https://api.sb/ratebook.dev/datasets/dataset_UDQXk0KsJB/backfill \
  -H "Authorization: Bearer $SB_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"source":"source_DIdhfB6mF5","from":"2026-10-22","to":"2026-10-22"}'

npx startup-builder do Dataset.backfill --data '{"dataset":"dataset_UDQXk0KsJB","source":"source_DIdhfB6mF5","from":"2026-10-22","to":"2026-10-22"}'

{
  "name": "do",
  "arguments": {
    "code": "return await $.Dataset.backfill({ dataset: 'dataset_UDQXk0KsJB', source: 'source_DIdhfB6mF5', from: '2026-10-22', to: '2026-10-22' })"
  }
}

import { $ } from 'startup-builder'

const dataset = await $.Dataset.backfill({ dataset: 'dataset_UDQXk0KsJB', source: 'source_DIdhfB6mF5', from: '2026-10-22', to: '2026-10-22' })

Inputs

Input	Type	Required	Description
`dataset`	Dataset	required	The Dataset.
`source`	Source	required	The Source to read.
`from`	`date`	required	The first day of the range.
`to`	`date`	required	The last day of the range.

Outputs

Output	Type	Required	Description
`dataset`	Dataset	required	The Dataset, with the range filled.

Effects

Fact	Value
Action class	None: no approval rule names it, so it runs within its seat's Permissions and Limits
Stakes	The Startup's own records only
Door	Two-way: it runs at once
Modes	`try` previews it and stores nothing; `send` returns a pending Action; `do` (default) waits for the result
Idempotent	Only with a key: a repeat with the same `Idempotency-Key` and input returns the first Action, the same key with other input is refused with `409`, and a repeat without a key runs again
Undo	Action.undo reverses it
Emits	`Dataset.backfilled`
Performed by	The Data Engineer

Refuses when

Check	Error	Fix	Then call
The key is valid, but its scopes do not allow this operation	`forbidden`	Use a key whose scopes cover the operation, or ask an owner of the namespace to grant them.	None.
`dataset` is missing, or is not a dataset	`invalid-input`	Send `dataset` as a dataset, then call it again.	None.
`source` is missing, or is not a source	`invalid-input`	Send `source` as a source, then call it again.	None.
`from` is missing, or is not a date	`invalid-input`	Send `from` as a date, then call it again.	None.
`to` is missing, or is not a date	`invalid-input`	Send `to` as a date, then call it again.	None.
The `Idempotency-Key` was sent before with another operation or other input	`idempotency-mismatch`	Send a new key for new input; reuse a key only to retry the same request.	None.

When it waits

Gate	Default
Decision class	Low: two-way, no delay window
Delay window	None: it runs once review passes.
Limit	The call Limit of the Permission it runs under.
Over the Limit	It waits `pending` for an Approval, which a Human answers: the owner of record, or a Human they named to approve for the Founder seat. Approved, it runs; refused, it ends `refused` with `limit-exceeded`; unanswered by its deadline, it ends `canceled`.

To retry, send the same Idempotency-Key: the retry returns the first Action and runs nothing twice. A new key runs the call again.

Dataset

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