---
title: V4.9.12
description: FastGPT V4.9.12 Release Notes
---

## Upgrade Guide

### 1. Update Environment Variables

Add the following environment variable to both the `fastgpt` and `fastgpt-pro` image configurations: `AES256_SECRET_KEY=` — used for secret key encryption.

### 2. Update Images:

- Update FastGPT image tag: v4.9.12
- Update FastGPT Pro image tag: v4.9.12
- mcp_server: no update required
- Sandbox: no update required
- Update AIProxy image tag: v0.2.2

## New Features

1. Enhanced AI Proxy monitoring with chart and table views for model call and performance metrics.
2. HTTP nodes and MCP now support separate "Auth Configuration" — plaintext credentials are never sent back to the client, ensuring data security.
3. Question classification and content extraction now automatically include the previous round's results in the prompt for additional guidance.
4. Conditional node now supports variable references.
5. Pro edition supports LLM-based automatic segment detection during knowledge base chunking.
6. Admin dashboard with data analytics.
7. Doubao 1.6 series models and updated Qwen model configurations.

## Improvements

1. Password validation now accepts more special characters.
2. Backend now fully computes knowledge base chunk parameters to prevent default values from being incorrectly applied in auto mode.
3. Text chunking moved to a worker thread to avoid blocking.
4. More subscription plan usage information displayed.
5. Input box styling improvements, with updated voice input UI for both desktop and mobile.
6. MCP tool calls now use raw schema for invocation to ensure completeness.
7. Deleting knowledge base files no longer fails if the file doesn't exist.
8. Upgraded MCP SDK with compatibility for the latest HTTP Streamable protocol.
9. Yuque document library now recursively fetches data from document-type directories.

## Bug Fixes

1. Custom QA extraction prompts being overwritten.
2. Template import failing when empty indexes exist in the data.
3. Potential XSS vulnerability on the login page.
4. Voice input in the text box causing the file list to be lost.
5. Image TTL field not being cleared in knowledge base documents, causing images to expire.
6. MCP tool storage not escaping integer type data.
