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API and webhooks

Use the REST API, webhooks, and Zapier to integrate ZenTransfer with your own systems.

Last updated 2026-05-24

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ZenTransfer provides a REST API for retrieving file records and building custom integrations. For instant reactions to new files, webhooks and Zapier are usually simpler than polling.

When to use what

MethodBest for
ZapierNo-code automations to 5,000+ apps
WebhooksYour own HTTP endpoint on file arrival
REST APIScheduled sync, custom dashboards, archive scripts

REST API authentication

The API uses OAuth 2.0 client credentials. Find your Client ID and Client Secret in the dashboard.

POST /oauth/token
Content-Type: application/json

{
  "client_id": "your_client_id",
  "client_secret": "your_client_secret"
}

Include the returned bearer token in the Authorization header on subsequent requests.

Listing files

GET /api/files?since=2026-03-01T12:00:00Z&o=0&l=20
Authorization: Bearer <your_bearer_token>
ParameterDescription
oOffset into the result set
lLimit (records per page)
sinceISO datetime — return only files created after this time

Each record includes id, name, mime_type, size, created, modified, url, and thumbnail_url.

Incremental sync pattern

  1. On first run, fetch all files and store the newest created timestamp.
  2. On each subsequent run, pass that timestamp as since.
  3. Update the stored timestamp from the latest response.

For instant delivery notifications, prefer Zapier or webhooks over tight polling loops.

Webhooks and Zapier

Configure webhooks from your dashboard to POST to your endpoint when a file arrives. Zapier receives the same events and can fan out to Slack, Google Sheets, CMS ingest, and more.

See What is Zapier? (blog) and Zapier integration (features).

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