Warrant is Zanzibar-inspired authorization. WardenAuth is RBAC + ReBAC with flat rates.
Warrant provides a Zanzibar-inspired authorization service with object types, warrants (relationship tuples), and a management dashboard. It's a clean implementation. But their pricing is per-warrant and per-feature — costs can be unpredictable. WardenAuth provides RBAC, ReBAC, audit, and API keys at one flat rate.
Overview
Warrant's model is elegant: define object types, create warrants (relationship tuples), and check access via a single API. Their dashboard is clean and their docs are excellent.
But pricing is per-warrant with feature tiers — as your authorization model grows, so does the bill. And Warrant focuses on ReBAC; RBAC is secondary. For multi-tenant SaaS where RBAC is the foundation and ReBAC is layered on top, WardenAuth's model is more direct.
Warrant — Strengths
- Clean Zanzibar-inspired API
- Object-type and warrant modeling
- Clean management dashboard
- Excellent documentation
- Pricing tiers and feature flags included
Warrant — Limitations
- Pricing is per-warrant — costs scale with model complexity
- ReBAC-first; RBAC is secondary
- No ABAC / attribute conditions
- No SoD constraints or approval workflows
- No SCIM provisioning
- Pricing is not flat-rate — per-warrant + per-feature
Pricing comparison
| Scenario | Warrant | WardenAuth |
|---|---|---|
| Getting started | Free tier (limited warrants) | Free (50K checks, unlimited tenants) |
| Mid-scale | Per-warrant pricing (variable) | $79/mo (Starter, flat rate) |
| Enterprise | Custom (per-warrant + features) | $1,199-3,499/mo (flat rate) |
Feature comparison
| Feature | Warrant | WardenAuth |
|---|---|---|
| ReBAC / relationships | ||
| Fine-grained RBAC | Secondary | |
| ABAC / attribute conditions | ||
| Management dashboard | ||
| Audit trail | ||
| API key management | ||
| Multi-tenant scopes | ||
| SoD / Approval workflows | ||
| Webhooks | ||
| SCIM provisioning | Included (Business+) | |
| Feature flags | ||
| Flat-rate pricing | ||
| Unlimited tenants (all tiers) |
Use case guide
Choose Warrant if you need Zanzibar-inspired ReBAC with a clean API, prefer Warrant's object-type modeling approach, or need features like pricing tiers and feature flags alongside authorization.
Choose WardenAuth if RBAC is your primary model with ReBAC as a layer on top. If you need unlimited tenants without per-tenant pricing, predictable flat-rate billing, and a broader feature set including audit, SoD, approvals, and SCIM.
Warrant's Zanzibar-inspired model is well-implemented with a clean API and dashboard. If ReBAC is your primary model and you're comfortable with per-warrant pricing, it's a solid choice. For multi-tenant SaaS with RBAC as the foundation, WardenAuth's flat-rate pricing and broader feature set (SoD, approvals, SCIM) provide more value.
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