Governing web APIs on Anypoint Platform17% of the exam
Security Across API Led Layers
Choose layer-appropriate browser, token, scope and application-contract checks, preserving authenticated identity through policy composition.
Secure web APIs using API policies appropriately chosen for the API's tier (System, Process, Experience).
~7 min read · 5 practice questions
What the exam expects
- Select controls for the actual callers and trust boundary of each API-led tier.
- Separate browser-origin rules, token validity, scopes and application contracts.
- Enforce combined permissions when a Process operation performs multiple protected actions.
- Preserve validated application identity when composing authentication and SLA policies.
An Experience boundary faces its consumer; a Process boundary protects composed business work; a System boundary protects access to a system capability; a scope expresses token authorization; an API contract grants a client application access to an instance. Tier responsibilities are developed in API Tier Ownership and Change; the policy checks below address these distinct trust decisions (Mule OAuth enforcement, Client enforcement).
Key facts
Browser boundary
- Detail
- CORS governs approved cross-origin interaction, not token validity.
Mule provider enforcement
- Detail
- Validates tokens from the Mule OAuth provider; does not generate them.
Combined permissions
- Detail
- Contains all scopes requires every configured scope.
Validated client identity
- Detail
- Following SLA enforcement can use authentication.principal after OAuth validation.
Separate contract check
- Detail
- Clearing Skip Client ID Validation preserves application-access validation.
Required token claims
- Detail
- Expected audience and expiration must be mandatory when absence must fail.
Signing requirement
- Detail
- Configure expected method and matching verification key.
Custom validation type
- Detail
- Custom-claim expressions must return Boolean values.
- When an HTTP requester forwards an eligible user-property field from the validation response, how is its backend header name formed?
- Why is a descriptive string unsuitable as a JWT custom-claim validation result?
- When a Mule OAuth validation response contains mail, which in-flow path reads that value?
The questions are free to read. Answers with their sources and self-grading are included with the pack.
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