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POST
Add Entries Handler
Adds values to a dataset. Duplicates are ignored. Changes are reflected immediately in beam.contains("DATASET_NAME", [input.field1, input.field2]) lookups inside JavaScript transforms — no redeploy needed. See the Datasets overview for the full usage pattern. Path parameters: Request body:
Response:

Uploading large datasets

Each request supports up to 250,000 values.
Use lowercase values when filtering by addresses — this is how values are normalized in the system.

Authorizations

X-API-KEY
string
header
required

Path Parameters

dataset_id
string
required

Body

application/json
values
string[]
required
Maximum array length: 250000

Response

Successful Response

count
integer
required