AuthSec vs Auth0: Modern Agent Identity vs Legacy Auth
Auth0 was built for web application logins. AuthSec is built for the next era — AI agents, autonomous workloads, trust delegation, and open-source deployment with RBAC-first authorization.
Agent-Native Architecture
MCP server auth, SPIFFE workload identity, and trust delegation are first-class citizens — not afterthoughts bolted onto a login SDK.
Open-Source, Self-Hosted
Full Apache 2.0 source. Deploy on your own infrastructure, audit the code, extend it for your compliance requirements. No vendor lock-in.
RBAC-First Authorization
Tenant-scoped RBAC with scoped role bindings ships natively. No separate authorization product or complex policy engine add-ons needed.
Architecture-level detail
Deep Technical Comparison
Legacy SaaS authentication vs. a modern identity runtime built for agents and workloads.
Auth0 Approach
The Login SDK
A mature login-as-a-service platform optimized for human web app authentication. Broad integrations, but agent-blind.
- ✕Broad enterprise integrations
- ✕Trust delegation requires custom glue
- ✕No native workload identity
AuthSec Approach
The Identity Runtime
Auth, RBAC authorization, trust delegation, and workload identity — unified in one Apache 2.0 binary.
- ✓Auth + RBAC + provisioning in one binary
- ✓Trust delegation with scoped agent tokens
- ✓SPIFFE/SPIRE + cloud token federation
Auth0 Authorization
Bolted-On Permissions
Auth0's authorization is limited to basic RBAC or requires a separate FGA (Fine-Grained Authorization) purchase.
- ✕Limited native RBAC scoping
- ✕ABAC/FGA is a separate paid product
AuthSec Authorization
Integrated RBAC
Tenant-scoped RBAC baked into the identity layer. Role bindings, permission checks, and scope management via one API.
- ✓Tenant-scoped roles + permission checks
- ✓Resource-level RBAC access controls
- ✓Group and scope management APIs
Where Auth0 shows its age
Auth0 was designed for a world of web apps and human users. As teams build AI agents and autonomous workloads, its architecture creates friction at every layer.
Agent Auth is DIY
Auth0 has no native MCP server auth, no SPIFFE workload identity, and no device auth grant support for headless agents.
Trust Delegation Gymnastics
Delegating scoped user access to an agent requires stitching together Actions, custom claims, and external token logic.
Pricing Escalates Fast
Auth0's enterprise tier unlocks features that AuthSec includes in every plan. CIBA, advanced MFA, and log streaming are all up-charges.
Enterprise readiness, day one.
All the features you'd typically upgrade for are included from the start.
Enterprise SSO
Unlimited SAML & OIDC connections with zero per-connection pricing.
SOC2 & ISO Ready
Compliance-grade audit logs, encryption at rest, and data residency controls.
MFA & RBAC
Multi-factor auth and role-based access control ship in the free tier.
SIEM & Audit
Stream events to your SIEM. 30-day built-in retention on all tiers.
Flat Pricing vs. The Legacy Tax.
Auth0's pricing unlocks core security features only at higher tiers — CIBA, log streaming, and advanced MFA all require enterprise plans. AuthSec includes everything on every plan with transparent, flat-fee pricing.
100%
Open-source. Audit, fork, and self-host the entire identity platform under Apache 2.0.
0$
Extra for CIBA, custom domains, or log streaming. Enterprise features are free on every tier.
Leave legacy auth behind.
Build on an identity runtime designed for agents, workloads, and modern applications — not just web app logins.