# AgentRein

> AI Agent Reliability Platform

- [Introduction](https://agentrein.com/docs/index.md): AgentRein is the reliability, rollback, and governance layer for production AI agents.
- [Quick Start](https://agentrein.com/docs/quickstart.md): Get AgentRein protecting your agent in under 5 minutes.
- [Core Concepts](https://agentrein.com/docs/core-concepts.md): Understand the key building blocks behind AgentRein: the Recursive Proxy, LIFO Rollback, Approval Gates, Intent Verification, and Policy Engine.
- [Statuses & State Machine](https://agentrein.com/docs/statuses.md): Reference for stored vs derived statuses across actions, sessions, and approval requests.
- [Security Model & Authentication](https://agentrein.com/docs/security-model.md): Authentication scopes, API key permissions, server guarantees, and failure modes.
- [FAQ & Troubleshooting](https://agentrein.com/docs/faq.md): Common integration states and how to handle them.
- [Installation](https://agentrein.com/docs/sdk/installation.md): Install the AgentRein SDK and configure your API key.
- [New Session](https://agentrein.com/docs/sdk/new-session.md): Create a new agent session before executing actions.
- [Execution Methods](https://agentrein.com/docs/sdk/call.md): How AgentRein intercepts and protects your API calls.
- [Undo Config](https://agentrein.com/docs/sdk/undo-config.md): Custom rollback instructions stored alongside actions.
- [Connectors](https://agentrein.com/docs/sdk/connectors.md): How AgentRein intercepts your existing API clients.
- [Supported Integrations](https://agentrein.com/docs/sdk/supported-integrations.md): Which external SDKs have automatic rollback support in the backend.
- [Policies](https://agentrein.com/docs/sdk/policies.md): Configure organization-level rules to allow, gate, or block actions.
- [Human-in-the-Loop (HITL)](https://agentrein.com/docs/sdk/hitl.md): Add approval gates for sensitive operations using wrap().
- [Errors](https://agentrein.com/docs/sdk/errors.md): Error types thrown by the AgentRein SDK.
- [API Reference](https://agentrein.com/docs/api-reference.md): Comprehensive REST API & SDK method reference.
- [Changelog](https://agentrein.com/docs/changelog.md): Product updates and announcements


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