Obelisk – a WASM-based deterministic workflow engine

In plain words

Obelisk is a workflow engine built with Rust and WebAssembly that executes long-running tasks reliably. It automatically resumes workflows if they fail, making it suitable for developers who need durable execution of complex processes. The engine uses the WASM Component Model to provide a lightweight, deterministic approach to workflow management, allowing tasks to recover from interruptions without losing progress.

written from the facts on this page · September 2026

From the sources

Obelisk is a fast open-source durable and deterministic workflow runtime powered by WebAssembly. Single binary, SQLite or Postgres, crash resilient.

curl -sSf https://raw.githubusercontent.com/obeli-sk/obelisk/main/download.sh | bash Use a Coding agent Write components in Rust obelisk generate prompt 'Create a workflow that fans out weather lookups for a list of cities in parallel' | claude The agent writes JavaScript activities, workflows, webhook endpoints, and a deployment file. cargo generate obeli-sk/obelisk-templates Use Rust starter templates or any WASM Component Model -compatible language. obelisk server run --deployment deployment.toml Use Web UI at :8080 , Webhooks at :9090 , API at :5005 or CLI to interact with the deployed application. Every call, sleep, and result is persisted to the execution log. Crash mid-workflow — it…from obeli.sk

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