IMPROVEMENTSep 28, 2026

Introducing the CheckFlow API v3

There’s a new version of the CheckFlow REST API, built from the ground up. It covers everything you can do in a workspace: Run checklists and complete their tasks Raise standalone tasks Build and version templates Manage Data Sets, schedules and webhooks Read members, groups and tags v3 is designed to be predictable for integrations and AI agents alike: One error format and one way of paging through lists Stable keys UTC timestamps throughout Safe retries with idempotency keys Each region has its own address (api.checkflow.io for the US, api-eu.checkflow.io for Europe). Interactive Swagger documentation and an OpenAPI document are included, so you can try requests or generate a client library. Existing v1 and v2 integrations, including Zapier, keep working. New integrations should use v3. Read more: https://docs.checkflow.io/docs/api-v3/overview

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