Frequently Asked Questions

Priostack offers four tiers:

Free Sandbox - 1 user, 1 workspace. Explore the platform at no cost, no card required.

Build - €149/mo - For solo architects and small teams. Includes a generous monthly process-execution quota plus all modelers (BPMN, CMMN, DMN, ArchiMate, IFML).

Operate - €349/mo - For teams running live workflows and AI monitoring. More users, more environments, higher execution quota.

Transform - €999/mo - For consultancies managing multiple client environments. Multi-client support, partner features, priority support.

Yes. The Free Sandbox plan is permanently free and gives you access to all modelers plus a limited execution quota. No credit card required. You can use it to model, deploy, and test workflows immediately after sign-up.

One credit is consumed for each of the following actions:

Model deployment - each time you deploy a BPMN, CMMN, DMN, or ArchiMate model (POST /api/v1/process-definitions).

Instance start - each time a workflow instance is started (POST /api/v1/process-instances). Service tasks, user tasks, gateways, and all other elements within that instance are included - there is no per-task or per-gateway fee.

Case instances (CMMN) and decision evaluations (DMN) each consume one credit as well. Job completions are free.

The API returns 402 Payment Required. In-flight jobs are never lost - they stay in the queue and resume automatically once the quota resets at the start of the next billing period or after an upgrade.

Yes, at any time. Downgrades take effect at the next billing cycle; upgrades are effective immediately. Contact support@priostack.com to manage your subscription.

Priostack is designed for three primary audiences:

Enterprise architects who maintain ArchiMate models and need a direct link from strategy to operational execution - without maintaining separate tooling for BPM, case management, and architecture.

Business analysts and process managers who design BPMN and CMMN workflows and need to deploy, monitor, and manage them from a single dashboard without engineering overhead.

Consultancies and integrators who deliver operational transformation projects for clients and need a multi-client platform that combines process automation, decision management, and architecture traceability.

No. The dashboard, modelers, and workspace are designed for business analysts and architects. You can model, deploy, and monitor processes without writing code.

For custom worker implementations (service tasks), a developer is needed to build the polling workers that consume POST /api/v1/jobs/activate - but the orchestration, monitoring, and decision evaluation are fully no-code.

Yes. The Transform plan includes multi-client workspace management and partner features. You can maintain separate environments per client, each with full tenant isolation and independent billing.

Priostack currently supports:

BPMN 2.0 - process automation with full execution semantics (service tasks, user tasks, gateways, events).

CMMN 1.1 - adaptive case management with plan items, stages, and milestones.

DMN 1.3 - decision tables and decision requirement diagrams for business rules.

ArchiMate 4.0 (Open Exchange) - enterprise architecture models compiled for dependency analysis.

IFML - interaction flow models for designing user-facing application behaviour.

No. Standard BPMN 2.0 and CMMN 1.1 files work as-is. Task definition extension elements (<taskDefinition type="...">) are supported for routing jobs to workers. Import via the Modeler, or deploy directly via the REST API.

A single process definition may contain up to 1 000 flow nodes. Definitions exceeding this limit are rejected at deployment time with a clear error message.

Yes. Priostack ships with a built-in tasklist at /tasklist and a full dashboard at /dashboard. It also exposes a standard Operate-compatible REST surface at /api/v1 and a GraphQL endpoint at /api/v1/graphql so compatible external tools can connect directly.

When you deploy a process model, Priostack analyses it automatically and flags any path where a workflow could get stuck before a single real instance has started. If a running workflow stalls (service task never responds), it surfaces automatically in GET /api/v1/incidents so you can investigate and fix before it affects your operations.

Every instance state is persisted to disk. If the service restarts, in-flight instances resume from their last checkpoint. Jobs re-appear in the queue once workers poll again - no work is lost.

Yes. Set the timeout field (milliseconds) when activating a job with POST /api/v1/jobs/activate. If the worker doesn't complete or fail the job within that window, the lock is released and the job becomes available for another worker pick-up.

Enter your email on the homepage signup form. Your API key is shown immediately and emailed to you. The Free Sandbox is active straight away - no card required.

In your modeler's connection settings, set the cluster address to https://priostack.com and the REST endpoint to /api/v1. Use your API key as the bearer token. Or use the built-in modeler in the dashboard - no installation needed.

Absolutely. Priostack is a plain JSON REST API. See the API reference for full details, or use the curl examples on the homepage to start immediately.