Platform
YouTube
Videos, Shorts, and planned community posts
Publish long-form landscape video and vertical Shorts from the same compose flow, with titles and descriptions validated per format.
What you can do in CatCaster
YouTube Shorts
Vertical or square video up to 3 minutes with Shorts-oriented aspect rules.
Standard videos
Landscape 16:9 uploads with description text up to 5,000 characters.
Community posts (when enabled)
Draft and plan community text/image posts; final publish may require manual action in YouTube Studio.
Comments and analytics
Read comments on videos and pull channel analytics where scopes allow.
Limits and honest constraints
- Community posts are behind a workspace feature flag and labeled manual publish—they are not fully automated uploads like video.
- Shorts and long-form video have different aspect and duration validation—one master file may not fit both without transcoding.
- YouTube processing time after upload is controlled by Google; CatCaster marks publish complete when the API accepts the upload.
- No YouTube inbox auto-reply in CatCaster today.
What AI can help with
- Draft SEO-friendly titles and descriptions from a transcript or blog outline.
- Suggest Shorts hooks from a long video summary.
- Editorial tools can propose topics; you attach the rendered video file before scheduling.
Claude, Cursor, and other agents
CatCaster exposes a remote MCP server at https://www.catcaster.com/api/mcp. Connect with OAuth (recommended) or a workspace API key. Agents discover workspaces and channels, draft posts, validate placements, schedule or publish with idempotency keys, and read analytics.
Relevant MCP tools
list_workspaces · list_channels · get_brand_context · create_post · update_post · validate_post · schedule_post · publish_post · get_analytics · list_published_content
Example prompt
On CatCaster MCP, list_channels for YouTube, create_post targeting youtube short with this title and description, attach the provided video URL in the tool payload, validate_post, and only schedule_post after I confirm.
OAuth setup for MCP clients is documented in docs/mcp-oauth.md in the CatCaster repository (Supabase OAuth 2.1, dynamic client registration, and consent). Browse AI agent guides →
Frequently asked questions
- Can CatCaster auto-publish YouTube Community posts?
- When the feature is enabled, CatCaster helps draft and plan them; many workspaces still complete community posts manually in YouTube.
- Shorts vs video—which should I pick?
- Choose Shorts for vertical/square clips up to 3 minutes; choose Video for standard 16:9 long-form.
- Does CatCaster read YouTube comments?
- Yes for supported connections—useful for analytics and manual response outside auto-reply.
- Can an agent upload a file for me?
- Agents can use upload_media then reference the asset in create_post; large videos still must meet YouTube limits.