Entra Id Jwt Token
You get an entra id jwt token by registering an app in Microsoft Entra ID. The service then signs and sends a JSON token after a user logs in. Teams use this token to prove who a user is across web apps and APIs. Many teams start by mapping broad group claims inside the token to database roles. When those roles grant wide write rights, one bad query can break production data. How an entra id jwt token works in your setup First, an admin registers the target app inside the directory tenant. Th
Microsoft Entra ID (Azure AD) + Token Rotation: the complete guide
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You get an entra id jwt token by registering an app in Microsoft Entra ID. The service then signs and sends a JSON token after a user logs in. Teams use this token to prove who a user is across web apps and APIs. Many teams start by mapping broad group claims inside the token to database roles. When those roles grant wide write rights, one bad query can break production data.
How an entra id jwt token works in your setup
First, an admin registers the target app inside the directory tenant. This step creates a unique app ID and sets up redirect URLs. Next, the admin defines which scopes and role claims the app needs. When a user tries to log in, the app sends them to Microsoft. The directory checks the user password and runs multi-factor rules.
After a good login, the directory builds a token with three parts. The header names the signing key and the algorithm used. The payload holds claims like user ID, email, tenant ID, and group names. The signature proves that Microsoft created the token and nobody changed it. Your backend API reads the public keys from Microsoft to check this signature. It also checks the audience claim to confirm the token belongs to your app. Finally, the app checks the expiration time before it lets the user in.
Why teams map token claims to backend roles
Managing separate user accounts inside every single database and server takes too much time. When someone leaves the team, admins must delete accounts in ten different places. Using central directory tokens fixes this account sprawl across the whole company. Admins put engineers into directory groups based on their job titles. The token carries those group IDs straight to the backend service during login.
The backend service reads the group claim and picks a matching local role. A developer group might map to a read-only role on a production database. A senior admin group might map to a full write role on that database. This setup keeps user management in one central place for the security team. It also gives auditors a clear log of who logged in and when.
Microsoft Entra ID (Azure AD) + Token Rotation: architecture patterns and best practices
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Where identity tokens fall short during active sessions
An identity token only works at the front door when a session starts. Once the backend checks the token, the user gets full rights for that role. The token cannot see or stop what happens inside the session after login. If an engineer has write rights, they can drop a table by mistake. The directory has no way to read the SQL statements or shell commands.
Token claims also cannot hide sensitive data inside the query results. If a table holds customer emails, phone numbers, card numbers, or national IDs, the query returns them all. Data masking must rewrite matched fields in results before they reach the screen. Also, group claims stay active until the token expires, which often takes an hour. Admins cannot approve a single command or mask live data using only directory tokens.
Check database and API queries on the wire
Identity tools, roles, and network rules decide who opens a session. Setup alone cannot check what each query does or mask sensitive values in a response once a session starts. When workflows touch Postgres, MySQL, SQL Server, MongoDB, ClickHouse, Kubernetes APIs, SSH, or internal HTTP APIs, hoop.dev runs beside those services as an open-source proxy, a sidecar for your Postgres or API. It inspects requests coming in and results going back on the wire.
Your login details and client tools stay as they are while hoop.dev guardrails refuse bad deletes or drops before they run. On responses, hoop.dev data masking rewrites matched sensitive values in memory. Furthermore, hoop.dev holds SOC 2 Type II, is MIT licensed, and writes every query and decision to an audit trail that generates evidence for HIPAA, GDPR, and PCI DSS. See the source on GitHub.
Frequently asked questions
What is the difference between an ID token and an access token?
An ID token proves to your client app that a user logged in. An access token tells a backend API what actions that user can run.
How does a backend API check a token signature?
The API fetches public signing keys from the Microsoft discovery endpoint. It uses those keys to check that the signature matches the token payload.
What happens when a user belongs to too many directory groups?
The token size grows too large if a user has hundreds of groups. Microsoft then replaces the group list with a link to query the Graph API.