V4.8.15

New Feature Preview

API Dataset

Create an API Dataset by entering a name, choosing the embedding and text-understanding models, and supplying the API endpoint and authorization value. FastGPT automatically adds the Bearer prefix to the authorization header. After creation, select files from the connected source and proceed to data processing.

HTML Rendering

Use Source to inspect an HTML code block, Preview to view the rendered page inside the chat, and Fullscreen to expand the preview. Script execution is blocked in this release’s preview mode.

Source Mode	Preview Mode	Fullscreen Mode

Upgrade Guide

• Update the fastgpt image tag to v4.8.15-fix3
• Update the fastgpt-pro commercial edition image tag to v4.8.15
• Sandbox image update is optional

Run Migration Script

From any terminal, send an HTTP request. Replace {{rootkey}} with the rootkey from your environment variables, and {{host}} with your FastGPT domain:

curl --location --request POST 'https://{{host}}/api/admin/initv4815' \
--header 'rootkey: {{rootkey}}' \
--header 'Content-Type: application/json'

This resets the scheduled execution fields for apps, removing null values to reduce index size.

From any terminal, send an HTTP request. Replace {{rootkey}} with the rootkey from your environment variables, and {{host}} with your FastGPT domain:

curl --location --request POST 'https://{{host}}/api/admin/init/refreshFreeUser' \
--header 'rootkey: {{rootkey}}' \
--header 'Content-Type: application/json'

This recalculates free-tier user durations. A previous version upgrade did not recalculate time properly, which caused incorrect notifications.

Full Release Notes

1. New - API Dataset. See API Dataset Introduction. The external file library will be deprecated.
2. New - Toolbox page displaying all available system resources. The commercial edition admin panel now offers easier configuration of system plugins and custom categories.
3. New - HTML code in Markdown is now rendered separately. You can choose preview mode, which blocks all scripts and only displays content.
4. New - Custom system-level file parsing service. See Integrating Marker PDF Document Parsing.
5. New - Collections can be reconfigured directly without deleting and re-importing.
6. New - Commercial edition admin panel supports configuring sidebar navigation links.
7. Improved - Base64 image truncation detection.
8. Improved - i18n cookie detection.
9. Improved - Markdown text splitting now supports heading-only sections with no content.
10. Improved - String variable substitution: unassigned variables now resolve to undefined instead of preserving the raw ID string.
11. Improved - Global variable default values now take effect in API calls, and custom variables support default values.
12. Improved - Added JSON parsing for HTTP Body with regex conversion of undefined to null, reducing Body parsing errors.
13. Improved - Scheduled execution now includes run logs and retries to reduce error rates.
14. Fixed - Share link like/upvote authentication issue.
15. Fixed - Switching to an auto-execute app on the chat page could incorrectly trigger non-auto-execute apps.
16. Fixed - Audio playback authentication issue.
17. Fixed - Plugin app Dataset citation limit was always capped at 3000.
18. Fixed - Workflow edit history storage limit. Removed local storage and added forced auto-save on abnormal exit.
19. Fixed - Workflow special variable substitution issue (strings starting with $ could not be replaced).