# RSS Feed Discovery

> RSS Feed Discovery is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Discovers all RSS and Atom feed URLs for a given website by checking link tags, common feed paths, robots.txt, and sitemaps

## Facts

- Endpoint: GET https://intel.rallylive.ca/site/feeds
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rss-feed-discovery-9619a636
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wG5Z6UXNSReXZ1VnDSkto

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability rss-feed-discovery-9619a636
```

Example prompt: Can you find all the RSS and Atom feed URLs for techcrunch.com? I want to subscribe to their updates.

## When to prefer this

Use this endpoint when you need to programmatically discover feed URLs for any website without already knowing the feed path. It combines multiple discovery strategies (HTML link tags, path probing, robots.txt, sitemaps) in a single $0.01 call, making it far more reliable than guessing common paths manually. Prefer this over the rss-to-json sibling endpoint when you don't yet have a feed URL and need to find one first.

## Known failure modes

- Site has no discoverable feeds — returns empty list
- Target domain is unreachable or returns non-200 status
- Site blocks crawlers, returning 403 or CAPTCHA
- Malformed HTML prevents link-tag parsing
- robots.txt or sitemap is absent or unparseable

## How this service works

RSS / Atom feed discovery: finds feeds declared in a page's link tags, common feed paths (/feed, /rss, /atom.xml, /feed.xml) that respond, and feed URLs listed in robots.txt or sitemaps. Subscribe agents to any site's updates. $0.01 per site.

## Output

A list of discovered feed URLs for the target site, categorized by discovery method (HTML link tags, common path probes like /feed /rss /atom.xml /feed.xml, robots.txt references, or sitemap entries), along with feed type (RSS or Atom) where detectable.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rss-feed-discovery-9619a636/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.rallylive.ca](https://www.zero.xyz/host/intel.rallylive.ca/llms.txt)