# MentorHitlMode enum

> The MentorHitlMode enum of Novior.MentorAgent.Options: How MentorAgent implements human-in-the-loop tool approval (roadmap #16). Both modes show the same…

- URL: https://docs.mentoragent.net/api/novior-mentoragent-options/mentorhitlmode
- Verified with: MentorAgent 1.2.0
- Last updated: 2026-10-27
- Packages: Novior.MentorAgent

How MentorAgent implements human-in-the-loop tool approval (roadmap \#16). Both modes show the **same** confirmation banner and use the **same** client protocol (`ConfirmationRequired` → `RespondToApproval`), so switching mode never requires a client change.

## Definition

Namespace: `Novior.MentorAgent.Options`. Package: `Novior.MentorAgent`.

`public enum MentorHitlMode`

```shell
dotnet add package Novior.MentorAgent
```

## Values

| Value | Number | Description |
|---|---|---|
| `Blocking` | 0 | MentorAgent's own flow (default). The tool invocation is intercepted inside `MentorAgentUIMiddleware` and the AI thread is parked on a `TaskCompletionSource` until the user answers, so the agent run — and its streaming — stays alive for the whole turn. Fewer moving parts and one agent run per turn; use it unless you need AF interop. Both modes make the same model calls. |
| `Native` | 1 | The Agent Framework standard flow. Tools that need approval are wrapped in `ApprovalRequiredAIFunction`; the framework's function-invoking chat client stops before invoking them and returns a `ToolApprovalRequestContent`, and MentorAgent resumes the run by sending back a `ToolApprovalResponseContent` on the same session. Choose this for **interop**: an AF workflow, DevUI or any AF-native host that consumes the agent sees the standard approval protocol instead of MentorAgent's internal one. It makes the same model calls as [`MentorHitlMode.Blocking`](https://docs.mentoragent.net/api/novior-mentoragent-options/mentorhitlmode), approved or declined: what it adds is one agent run per round of confirmations (the run stops at the request, and a second one carries the answers), and the reply arrives in two streamed segments (before and after the banner). |

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- Previous: [MentorConfirmationContext class](https://docs.mentoragent.net/api/novior-mentoragent-options/mentorconfirmationcontext.md)
- Next: [MentorOptions class](https://docs.mentoragent.net/api/novior-mentoragent-options/mentoroptions.md)