Parse the actual feed
Validate RSS structure and required podcast and episode fields without copying the feed into storage.
Podcast RSS release preflight
Catch feed problems before listeners do.
Check a public podcast feed for structural and latest-episode problems. Every result shows its evidence and the published rule behind it.
Current evidence
Feed report
Castlint checks deterministic properties of the supplied public feed. It does not guarantee acceptance, delivery, ranking, or availability in any podcast directory.
Narrow by design
One job, inspectable output
Check the latest enclosure
Use a bounded HEAD request to inspect status, media type, and byte-range metadata. Audio bodies are never downloaded.
Compare on your device
Keep the prior evidence in this browser and surface result changes on the next release check.
Price test - no payment
Would release monitoring be worth $7/month?
Proposed paid beta: automated checks for up to three public feeds, release-change history, and asynchronous alerts. It is not built or available yet.