Cascade

No-code automation workflow builder executing deterministic step sequences without relying on AI models in the execution path.

Step Types & Execution Rules

HTTP. Execute external HTTP/HTTPS requests with server-side SSRF protection, passing response headers and JSON bodies into subsequent steps.
Connector. Execute requests against OAuth integrations (Slack, GitHub, Notion, Google Sheets) using server-secured credentials.
Hollow Tool. Execute native suite tool actions (create tasks, send Yap messages, update workbooks, query contacts) directly as automation steps.
Code. Write capability-safe code using HollowScript (with declared uses capability statements), JavaScript, or Python in isolated standard-library-only execution sandboxes.
Filter. Evaluate predicate conditions using HEL expression syntax to branch execution or halt cleanly.
Loop. Iterate over output array items from prior steps with maximum-iteration safety guards.
Delay. Pause execution briefly in place or suspend long-running flows durably across extended time windows.
Approval. Hold execution until a human administrator approves or rejects the step, branching based on approval outcome.

Data Expressions & Secrets Vault

Reference outputs from preceding steps using {{ steps.STEP_NAME.output }} expressions. Store API keys and private tokens in the encrypted Secrets Manager and reference them securely as {{ secrets.NAME }}. Values are encrypted at rest and masked out of all execution logs and previews.

Triggers & Execution Logs

Trigger automations on demand, on a cron schedule (using 5-field cron syntax), or via inbound webhook URLs. Access historical execution runs in the Runs View to inspect per-step input payloads, output responses, execution times, and failure alerts.