Let your lobster speak through any podcast app.

One skill. Text from your OpenClaw in, a published podcast episode out, in your favourite podcast app.

Apple PodcastsOvercastPocket CastsCastro
Hand this to your OpenClaw
Install the OpenClaw skill "Text to Published Podcast RSS" (cast0/text-to-published-podcast-rss) from ClawHub.

Skill page: https://clawhub.ai/cast0/text-to-published-podcast-rss

After install, walk me through finishing setup:
1. I'll create a podcast at https://cast0.ai and grab my API key.
2. Help me save it as CAST0_API_KEY.
3. Then generate a test episode so I can confirm it's working.

Or skip reading. This page, made into a podcast by OpenClaw itself.

The OpenClaw pitch
The skill that pitches itself. One install away.
1:14

One skill. Three steps.

No backend to wire up. No file hosting. No RSS to publish. The skill does it all.

01

Your agent writes text

Briefing, research summary, weekly digest. Whatever your OpenClaw agent already produces.

02

Skill ships it to the cast0 API

One tool call from inside your agent. The skill handles auth, the API, and polling for completion.

03

Episode appears in your podcast app

Auto-published to your RSS feed. Apple Podcasts, Spotify, Overcast, anywhere you already listen.

Your OpenClaw agent writes too much to read.

You set up your agent to research, summarize, brief, digest. It does the work. The output piles up in chat scrollback. You read the first few lines and move on.

Audio fixes this. Episodes queue up while you sleep. The morning briefing waits in your podcast app next to The Daily. The research summary plays on your commute. The weekly digest catches you on a walk.

Your agent talks when it has something to say. You listen when you have time.

10,000words your agent writes a day
2,000words you actually read

Some content is better as a podcast.

Read this article as an episode...
→ ~9 min episode
Take this 50-page PDF and turn it into a 12-minute episode.
→ ~12 min episode
Research this topic and ship it to my podcast feed.
→ ~12 min episode
Pick 5 Hacker News stories matching my profile, weekday mornings.
→ daily, ~10 min
Every morning at 7am, summarize my inbox, calendar, and GitHub mentions.
→ daily, ~6 min
Turn that into a podcast
LIBRARY
Up Next
TODAY
Morning Briefing
6 min left
TODAY
HN Weekly Digest
12 min left
MON
Q1 Stripe MRR Recap & Outlook
9 min left
MON
Inbox Zero, Audibly
4 min left
SUN
Calendar this week
3 min left
Listen in

Pricing

$0
Free tier, generous enough to try.Or bring your own OpenAI key for unlimited.
$5/ mo
Pro, when your agent has more to say.

See full pricing.

Setup, end to end.

From zero to a published episode in about two minutes.

  1. 1

    Install the skill

    Use the prompt or CLI at the top of this page.

  2. 2

    Create a podcast and grab your API key

    Sign up at cast0.ai, name your podcast, pick a voice. Free, no card. The dashboard shows your API key (pk_...) and the RSS URL.

  3. 3

    Hand your agent the API key

    The skill will prompt for it on first use and save it as CAST0_API_KEY.

  4. 4

    Ask your agent to ship an episode

    Try: "Brief me on AI news from this week and ship it as an episode."

The free tier covers about 40 minutes of audio per month. Need more? Paste your own OpenAI TTS key on the settings page and episodes stop counting against quota.

Common questions.

What does the skill actually do?
It gives your OpenClaw agent a tool to turn text into a published podcast episode. Your agent calls the skill with a title and the text, the skill handles the cast0 API call, polls for completion, and returns the episode URL. The episode auto-publishes to the podcast's RSS feed.
Does it cost anything?
Free to start. The free tier covers 35,000 characters per month (about 40 minutes of audio on standard quality), with a 15,000 character cap per episode. Pro is $5/month for more monthly minutes and unlimited episode length. See cast0.ai/pricing for details, or paste your own OpenAI TTS key on the cast0 settings page to remove the cap entirely.
Do I need an OpenAI API key?
No. cast0 supplies the TTS by default. Bringing your own OpenAI key is optional, and removes the monthly cap.
Which podcast apps does it work with?
Any app that supports RSS feeds. Apple Podcasts, Spotify, Overcast, Pocket Casts, Castro. Each podcast gets its own unguessable feed URL you paste into the app.
Can my agent run this on a schedule?
Yes. If your OpenClaw agent can be triggered on a schedule (cron, scheduled task, anything), it can call the skill on that schedule. The classic setup: a 7am agent that builds a morning briefing and ships it as an episode.
How long does generation take?
Asynchronous. Short episodes finish in under a minute, longer ones in a few. The skill polls until the episode is ready and returns the audio URL.
Is there a length limit?
Per-episode cap of 15,000 characters on the free tier (about 17 minutes). With your own OpenAI key, no length limit. cast0 chunks and stitches long inputs into one seamless episode.
Can I keep my podcast private?
Yes. The RSS URL contains an unguessable token, not a slug. Share with whoever you want, or keep it entirely to yourself.
Can I change the voice?
Yes. Each podcast has its own voice and speed setting. Any OpenAI TTS voice works. Change it any time from the dashboard.
What languages are supported?
OpenAI TTS supports 57 languages including English, Spanish, French, German, Japanese, Portuguese, Chinese. Send text in any of them.
Where can I see the skill source?
On ClawHub: cast0/text-to-published-podcast-rss. Full metadata, install command, and skill contents.

Give your OpenClaw agent
a voice.

One skill. Real RSS. Episodes in the podcast app you already use.

Hand this to your OpenClaw
Install the OpenClaw skill "Text to Published Podcast RSS" (cast0/text-to-published-podcast-rss) from ClawHub.

Skill page: https://clawhub.ai/cast0/text-to-published-podcast-rss

After install, walk me through finishing setup:
1. I'll create a podcast at https://cast0.ai and grab my API key.
2. Help me save it as CAST0_API_KEY.
3. Then generate a test episode so I can confirm it's working.