Design flows visually. Run them as governed, streamable engines.
Vastvic workflows are declarative flow definitions (nodes + edges) executed by a 50+ node engine. Build them by prompt or on a canvas, stream every step over SSE with eval metrics and HITL pauses — then attach them to an App Foundry build so the generated app runs them on a schedule.

Integrations & connectors, provisioned as MCP clients
50+ node types, one executor.
LLM calls, tools, routers, conditionals, loops, human approvals, sub-flows — topologically compiled and invoked by a single engine. Predictions stream over SSE with structured eval metrics and pause points.
- Prompt-to-flow or visual canvas authoring
- SSE streaming with
__EVAL_METRICS__and__HITL_PAUSE__ - Sub-flows and parallel fan-out
- Versioned, shareable flow definitions
Attach a workflow — the app runs it.
Reference a workflow in an App Foundry build and it’s compiled into the generated app with its schedule, tools and sub-agents. No glue code, no separate orchestrator to babysit.
- Executed by the same harness that builds the app
- Governed by HITL gates and the run ledger
- Observed end to end — cost, tokens, every node
Attached workflow → scheduled in the generated app, exposed as an MCP tool, and traced in the run ledger.
Turn a workflow into a shipping product.
Design the flow, attach it to a build, and let App Foundry generate the app that runs it — governed and observable.