### Answer Could you share more details about the specific issue you're encountering? For example: - Are you trying to add URLs, files, or custom text to your knowledge base? [(1) ]() - Are you seeing any error messages? - What file format are you using (if uploading documents) ? In the meantime, here are a few things to check: Supported sources for knowledge base: - Website content (via URLs) - Documents (supported formats: .bmp, .csv, .doc, .docx, .eml, .epub, .heic, .html, .jpeg, .png, .md, .msg, .odt, .org, .p7s, .pdf, .png, .ppt, .pptx, .rst, .rtf, .tiff, .txt, .tsv, .xls, .xlsx, .xml) - Custom text snippets Limits to be aware of: - URL: max 500 URLs - Text: max 50 text snippets - File: max 25 files, each file max 50MB - For CSV, TSV, XLS, and XLSX: row limit is 1000 rows, column limit is 50 columns Best practice tip: Prefer

.md

(Markdown) files over

.txt

for better chunking and retrieval accuracy. Let me know what specific error or behavior you're seeing, and I can help troubleshoot further.

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

​ To learn more, see the sources I considered: [[1] Knowledge Base](https://docs.retellai.com/build/knowledge-base) ​