Running Hekla as a service, AI Infrastructure

Hekla Agency Implementation, Auditable Backend Delivery

Learn to architect and deliver event-sourced backends using Hekla's declarative language, eliminating boilerplate and compliance risk for clients. This course teaches agencies how to scope projects around heklang declarations, automate read model generation, and position deterministic backends as a premium service for regulated industries.

Open the decision record for Hekla

What does running Hekla for clients commit you to?

Published figures for this service. Blank fields are not published.

Monthly tool cost
Not published, Hekla is open-source; the agency must confirm whether any paid vendor tier or support plan applies before modeling cost basis.
Time to first value
Not published
Payback
Not modeled
Guided implementation
8 hours

Is Hekla worth running as a client service?

Hekla's evidence supports a managed-service offer for agencies with strong backend engineering, centered on compile-time determinism, subject-scoped encryption, and deploy verification. Vendor cost basis, client price, labor, usage, and expected volume are not supplied, so ROI cannot be calculated.

An agency-fit judgement for reselling this service. It is separate from the tool description on the decision record.

Before you start

What has to be in place before the first client engagement.

Tools and subscriptions

  • Hekla runtime and heklang compiler installed on development workstations
  • Event log storage infrastructure (append-only, as required by Hekla's source-of-truth model)
  • OpenAPI tooling to consume the generated OpenAPI document
  • Admin console access generated from declarations for inspecting effects and invocations
  • HTTP client or API gateway for POST /commands and GET /read endpoints

People and inputs

  • Engineers trained in event sourcing and declarative language design, given Hekla's high setup complexity
  • Documentation review of heklang grammar, structural determinism rules, and Dynamic Consistency Boundary behavior
  • Reference implementation of a projector, effect, and fold to understand read model rebuilds from position zero
  • Access to Hekla's deploy planning workflow for comparing candidate deploys against running systems

Included with the course

7 working documents for delivering this service.

  • Hekla Project Scoping Worksheetworksheet
  • Event-Sourced Backend Delivery Checklistchecklist
  • Heklang Declaration Template Librarytemplate
  • Read Model Rebuild SOPsop
  • Compliance Audit Positioning Guideguide
  • Subject-Scoped Encryption Implementation Checklistchecklist
  • Hekla Plan Deployment Comparison Templatetemplate

Listed by name. These documents are not yet published as individual downloads.