Important
Deprecation notice for the /preview endpoint:
The /preview endpoint is now deprecated and will be removed in a future update.
Please migrate to v1/sheet/rss or v1/sheet/atom for more features and better performance instead.
crssnt converts RSS/Atom feeds into LLM-friendly Markdown or JSON. This simplifies integrating feed content into AI workflows.
This fetches the BBC News RSS feed and returns its content as Markdown optimized for language models., with the &llm_compact=true parameter:
https://crssnt.com/v1/feed/md/?url=http://feeds.bbci.co.uk/news/rss.xml&llm_compact=true
This uses the group_by_feed=true parameter to fetch and group items from BBC News and The Guardian and return a combined LLM-optimized Markdown output.
https://crssnt.com/v1/feed/md/?url=http://feeds.bbci.co.uk/news/rss.xml&url=https://www.theguardian.com/world/rss&llm_compact=true&group_by_feed=true
- LLM-Optimized Conversion: Transforms RSS/Atom feeds into structured Markdown or JSON, with an
llm_compactoption for conciseness. - Multiple Output Formats: Supports Markdown, JSON, and Atom for converted feeds.
- Feed Aggregation: Combines (and auto-sorts by date) items from multiple source feeds.
- Google Sheet Support: Can also generate feeds (RSS, Atom, JSON, Markdown) from public Google Sheets.
Access via https://crssnt.com/ followed by these endpoint paths:
Feed Conversion:
/v1/feed/md//v1/feed/json//v1/feed/atom/
Google Sheet Processing:
/v1/sheet/md//v1/sheet/json//v1/sheet/rss//v1/sheet/atom/
| Parameter | Description | Supported Endpoints | Example Values/Notes |
|---|---|---|---|
url |
URL of the source RSS/Atom feed. Stack up to 10 URLs together using &url= |
/v1/feed/md/, /v1/feed/json/, /v1/feed/atom/ |
url=http://example.com/feed.xml |
llm_compact |
If true, produces compact JSON or Markdown output for LLMs. |
/v1/feed/md/, /v1/feed/json/, /v1/sheet/md/, /v1/sheet/json/ |
true, false |
group_by_feed |
If true and multiple urls are provided, items in JSON/Markdown are grouped by original feed title. |
/v1/feed/md/, /v1/feed/json/ |
true, false |
max_items |
Limits the number of items returned. | All data-returning functions | 1, 10 |
id |
Google Sheet ID (from its URL). | /v1/sheet/* |
your-sheet-id |
name |
Name of a specific sheet/tab in Google Spreadsheet. Multiple name params for multiple sheets. Defaults to first. |
/v1/sheet/* |
Sheet1, name=MyData&name=Sheet2 |
use_manual_mode |
If true, uses specific column headers (title, link, etc.) for mapping. Default false (auto-detection). |
/v1/sheet/* |
true, false |
crssnt processes user-provided URLs to fetch data. It's a transient processor and doesn't store feed data. Standard logging may occur. See Privacy Policy.
crssnt can be self-hosted as Firebase Cloud Functions. Refer to the Firebase documentation for deploying functions. Use the Firebase Emulator Suite for local testing. The https://crssnt.com/ service is recommended for most users.
Contributions are welcome. Please fork the repository, make your changes on a new branch, and submit a pull request.
This project is licensed under the MIT License. See the LICENSE file for details.