User Authentication And Account Linking

via “linked accounts system for multi-account per-service support”

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Unique: Supports multiple linked accounts per user per service through the LinkedAccount model, enabling agents to operate across multiple user contexts (e.g., multiple Gmail accounts) without re-authentication. Account selection is explicit and can be controlled by agents or configured at the project level.

vs others: More flexible than single-account-per-service systems because it supports multiple contexts, and more secure than sharing credentials across users because each linked account is encrypted and isolated.