# RSS

**Canonical:** https://apis.io/providers/rss/  
**Website:** https://www.rssboard.org/  
**APIs profiled:** 6

RSS (Really Simple Syndication) is the canonical XML feed format family for publishing and subscribing to streams of frequently updated content — blogs, news, podcasts, and other periodic resources. The RSS family in this index covers RSS 2.0 (stewarded by the RSS Advisory Board), Atom 1.0 (RFC 4287), JSON Feed 1.1, the RSS Best Practices Profile, OPML 2.0 for feed subscription lists, and HTML autodiscovery conventions used by feed readers to locate feeds from a site's homepage.

## Kin Score — 17.9 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 17.9).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 24.0 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## APIs (6)

- **RSS 2.0** — RSS 2.0 is the dominant XML-based syndication format, stewarded by the RSS Advisory Board. A feed consists of a root <rss version="2.0"> element wrapping a single <channel> with...
- **Atom 1.0** — Atom 1.0, defined by IETF RFC 4287, is an XML-based syndication format developed as a more rigorously specified alternative to RSS 2.0. An Atom feed (atom:feed) contains require...
- **JSON Feed 1.1** — JSON Feed 1.1 is a JSON-based syndication format created by Brent Simmons and Manton Reece as a developer-friendly alternative to RSS and Atom. A JSON Feed has top-level version...
- **RSS Best Practices Profile** — The RSS Best Practices Profile is the RSS Advisory Board's normative guidance on producing RSS feeds that interoperate cleanly across the diverse population of feed readers. It ...
- **OPML 2.0** — OPML (Outline Processor Markup Language) 2.0 is an XML format for outlines, most commonly used to exchange lists of RSS/Atom feed subscriptions between feed readers. A subscript...
- **Feed Autodiscovery** — Feed autodiscovery is the HTML convention by which a web page advertises the location of its RSS, Atom, or JSON Feed using a <link rel="alternate" type="application/rss+xml" hre...

## Security (1)

- **Rss Domain Security** — TLSv1.2 · HSTS · DNSSEC · DMARC

## Tags

Syndication, RSS, Atom, JSON Feed, OPML, Content, XML, Specification, Standard

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/rss/). Scores are computed from the provider's own public artifacts under a published rubric.