01
Many Source Types
Customers add files, web pages, FAQs or plain text to a Knowledge Base. Zender splits the text into short passages, so a question finds the passages that best match it.
What You Get
02
Built-In Search
Passages are stored with embeddings in your own database next to a MySQL FULLTEXT index. There is no separate search server to install, host or keep running alongside Zender.
03
Flow AI Steps
The AI step in Flows gets a Knowledge Base choice. Automated replies can then answer from your documents instead of guessing, based on the passages found for each question.
04
Suggest Reply In Messenger
Messenger Settings gains a Knowledge Base section for Suggest Reply. Suggested answers draw on your indexed content, searched using the latest message from the customer.
05
Test Search Preview
Test Search shows which passages a question finds before you rely on it. You can check coverage, spot gaps in your documents and fix them without waiting for a real customer to ask.
06
Plan Size And Query Limits
Each plan sets a Knowledge Size in MB and a monthly query limit, with warnings at 80% and 100% of the size cap. You decide how much indexing each workspace tier receives.
How It Works
Add An Embeddings Provider
In Admin, add an active AI provider with the Embeddings capability and a price. Then upload the plugin ZIP in Admin > Plugins and install Knowledge Base.
Configure And Activate
Open Configure, choose an Embedding Model, click Test Connection and save. Activation needs a verified configuration, then you turn on the Knowledge Base switch.
Enable It On Plans
In Admin > Plans, turn on Knowledge Base for eligible plans and set Knowledge Size and Knowledge Queries per month. Workspaces then see it under Automation in the sidebar.
Requirements
- Zender 5.0 or later
- An embeddings provider (OpenAI or OpenRouter) set up in AI Providers with a price
- The Zender queue and scheduler running, since indexing and refresh are background jobs
- MySQL or MariaDB for the FULLTEXT index (other databases fall back to simpler keyword matching)
- Zender server: PHP 8.4 or later
- Sources: PDF, DOCX, TXT, Markdown, CSV or HTML files up to 20 MB (scanned PDFs have no readable text)
Frequently Asked Questions
What is Knowledge Base Plugin for Zender?
Knowledge Base Plugin is an AI add-on for Zender that indexes workspace documents so automated answers and suggested replies can quote them.
Do I need a separate search server such as Meilisearch?
No. Zender stores the passages and their embeddings in your database next to a MySQL FULLTEXT index. There is no extra search service to install or maintain. On databases other than MySQL or MariaDB, search falls back to a simpler keyword match.
Which AI provider does it need for embeddings?
You need an active AI provider with the Embeddings capability and a price in credits per 1,000 tokens. OpenAI or OpenRouter work for this. You pick the Embedding Model in the plugin settings and use Test Connection before activating.
Can I limit how much each plan can index and query?
Yes. In Admin > Plans you set a Knowledge Size in MB and a monthly Knowledge Queries limit for each plan. Workspaces get warnings at 80% and 100% of the size cap, so they know before they run out.
What are the Knowledge Base size limits?
Each Knowledge Base can hold up to 7 MB of indexed text, which the system caps at 5,000 passages. File sources can be PDF, DOCX, TXT, Markdown, CSV or HTML up to 20 MB, and a scanned PDF has no text to read. Indexing and searches use your embeddings provider.
Do Extended license holders get a discount?
Yes. Zender Extended license holders buy this plugin at a reduced price. With a Regular license, it is sold at the price shown on this page.
Do I need Zender to use it?
Knowledge Base Plugin for Zender is an add-on for Zender and requires a Zender 5 installation. The requirements are listed on this page.
How do I get Knowledge Base Plugin for Zender after buying?
After buying, sign in at https://dashboard.titansys.dev with the Envato login button to download it and get support.