Publish one or more channel variants immediately. Side effects: makes external HTTP requests to each channel platform; writes publish state to the local YAML backend; requires valid credentials in the named profile. Idempotent on (content.id, channel) — re-running with the same IDs returns cached state without re-posting. Use post_publish for immediate-only delivery; use post_schedule when any variant needs a future schedule_at; use post_drain to flush a previously built queue.

Enqueue channel variants with schedule_at for future publishing; variants without schedule_at are published immediately. Side effects: writes entries to the local YAML schedule store; makes external HTTP requests for any immediately-published variants; requires credentials in the named profile. Idempotent on (content.id, channel). Use post_schedule when any variant needs a future publish time; use post_publish for all-immediate delivery; use post_drain to process the scheduled queue later.

Fire all scheduled posts due at or before the given time boundary. Side effects: makes external HTTP requests for each due entry; writes results to the YAML backend. Idempotent — already-published (content.id, channel) pairs are skipped; no-op when no entries are due. Safe to call from cron. Use post_drain on a recurring schedule to flush the queue; use post_publish or post_schedule to add new content; use post_status to inspect results after drain runs.

Return publish state for content pieces. Filters by content_id, channel, or both; returns all entries when neither is given. Side effects: read-only; no external HTTP calls; no auth needed. Deterministic given unchanged backend state. Use post_status to inspect what has been published, what is queued, or what errored; use post_publish, post_schedule, or post_drain to change state.

Best-effort delete of a published post on the target platform. Side effects: makes an external HTTP DELETE or update request; DEV.to sets published=false (soft delete); platforms without a delete API return success=false without error. Non-idempotent — calling on an already-deleted URL may return a platform 404. Use post_unpublish to retract a live post; use post_status first to obtain the live_url; use post_publish to re-publish after an unpublish.

Return static per-channel metadata: character limits, Markdown support flags, tag vocabulary, and CTA placement rules. Side effects: read-only; no external HTTP calls; no auth needed. Fully deterministic — returns compile-time adapter constants. Use channel_hints before composing a variant body to understand channel constraints; use post_publish or post_schedule once you have a valid variant.

Return all distribution profile names configured in the YAML backend. Side effects: read-only; no external HTTP calls. Deterministic given backend state. Use profile_list to discover available profiles before calling post_publish, post_schedule, or subreddit_list; then pass the chosen name as profile_name.

Return all subreddits in the Subreddit Catalog with cooldown windows, flair vocabulary, and last-posted metadata. Optionally filtered to subreddits allowed by the named profile. Side effects: read-only; no external HTTP calls. Deterministic given backend state. Use subreddit_list to select a subreddit and obtain flair IDs before composing a reddit: channel variant; pass flair in variant.extras.flair.