In the Agentic Era, B2B SaaS companies are moving faster than ever. Agents operate on behalf of users, orchestrate across systems, and execute thousands of tasks per minute. But legacy authorization was not built for this. As enterprises scale and adopt AI agents, permission complexity and the frequency of permission checks multiply exponentially. B2B SaaS companies are left with a critical tension: slow down to enforce permissions correctly, or move fast and risk a breach.
Today, we are excited to announce that Auth0 FGA Permissions Index is now available in Early Access.
FGA Permissions Index precomputes all possible user permissions and streams that data directly into your database, co-locating it next to your application data. The result: applications can filter large datasets based on user permissions with consistently low latency at massive scale. By offloading authorization complexity to Auth0, your teams can move faster and focus on building what matters most.
AI Is Reshaping Authorization in the B2B SaaS Landscape
B2B SaaS is a network of relationships. Every meaningful piece of data in your platform exists within a web of connections:
- Customers become organizations.
- Users belong to teams, which belong to organizations.
- Documents are owned by users, shared with groups, accessible by roles or teams.
- Workflows span multiple actors: humans, agents, service accounts, bots.
- Permissions flow through inherited delegation chains: "User A delegates to Agent B, who works inside Project C, whose members have access to Resource D"
For the last decade, this complexity was manageable because the actors were mostly human, their actions were mostly predictable, and permissions mostly didn’t change often.
The Agentic Era breaks this model in two ways:
1. Agents Are a New Identity Class
By 2030, the ratio of non-human to human identities is projected to hit 50x (Oasis Security, 2026).
Agents are not tools. They are first-class identities that should have their own permissions. Each one has scoped access and its own relationships to model, sitting alongside every human, team, and partner already in your system.
This operational complexity multiplies as agents delegate tasks to sub-agents, and not all agents should be granted the same permissions.
That is exponentially more relationships to model, more permissions, and more authorization checks to process — all with the pressure of maintaining the same performance speed.
2. The Shift From Browsing to Delegating
According to a Gartner study conducted in 2025, it predicts that 40% of enterprise apps will embed task-specific AI agents by the end of 2026, an eight times jump from 2025.
Picture a sales leader who no longer opens five tabs. They say: "Review my pipeline, identify at-risk deals, update the forecast, and draft outreach." Behind that one request, the agent is orchestrating multiple searches across the CRM, the data warehouse, Slack, and email. Each search generates dozens of permission checks. Multiply that across multiple concurrent agents, and authorization requests scale exponentially faster than your agent count.
Traditional authorization systems were not built to handle this.
Auth0 FGA Permissions Index Is the Solution
Auth0 FGA Permissions Index solves the core tension of Search with Permissions: How do you enforce permission boundaries at scale without sacrificing speed? This feature is designed to handle authorization at an enterprise scale most traditional systems cannot achieve.
With the Permissions Index, users choose a set of relations they will use for search and filtering (that is, typically high-cardinality relations like can_view) on an object type and index them. Then, the Permissions Index precomputes every access those relations imply, giving you instant verification of what users and agents can access.
Behind the Scenes
Permissions Index works by computing every access that a chosen relation implies, and streaming that data directly into a customer's own database, co-locating it next to their application data. For those relations, this eliminates the need for repetitive API calls to the authorization service at query time. Instead of a runtime graph traversal, applications perform a simple, fast SQL JOIN between their business data and the Permissions Index. Everything outside the relations that are indexed is still evaluated by FGA in real time, exactly as it is today.
The Precompute Advantage
The key innovation behind the Permissions Index is a calculated tradeoff: do the expensive work when permissions change, not when someone is checking for access.
When a new relationship is added to Auth0 FGA, the Permissions Index pre-computes every possible permission combination implied by the new relationship and stores those as direct paths to the object. This incremental approach keeps authorization from being a runtime bottleneck, allowing access lookups on indexed relations to become constant-time.
While Permissions Index computes user permissions at Write time, the same outcome can be achieved through computing at Query time. Permissions Index calculates all these possible relationships ahead of time to skip the complex graph traversal at Query time.
How FGA Permissions Index Enables Enterprise Success
“Fine-grained authorization has become the foundation that we built our AI roadmap upon. It is the only way to make AI data retrieval enforceable rather than aspirational.”
– Filevine
1. Unlock Enterprise Growth
Enterprise customers have complex organizational structures, strict compliance requirements, and sophisticated permission needs. FGA Permissions Index is an enterprise-ready feature that can perform incredibly fast, low-latency permission checks and scales efficiently with millions of users, documents, and permissions.
2. Accelerate Time to Market
Complexity is what keeps teams from shipping: every new role, resource, or service you add makes your permission model more complex. FGA Permissions Index takes that off your plate. With a colocated index, your developers integrate with the systems they already use, while permissions stay precomputed, scalable, and auditable behind the scenes. Your teams spend less time maintaining authorization and more time building and shipping differentiated features.
3. Ship Without Repeated Security Reviews
Permission decisions are precomputed, traceable, and compliant from day one, so enterprise buyers get exactly the guarantees their security reviews are looking for. That means less custom implementation work for you, and a faster path to expanding with the customers you already have.
Get Started with Early Access
Speed to market is everything in the AI era. To maintain a competitive edge, your product and engineering teams simply cannot afford to spend their valuable cycles building and maintaining authorization.
Do not let permission complexity stall you from moving upmarket, deploying agents or securing enterprise deals. FGA Permissions Index is your competitive advantage to get ahead.
- Learn more with our documentation
- Best practices with Permissions Index
- Review our pricing page
- Sign up and get started, or continue building with Auth0