Show publication configuration, local ledger counts, and synchronization freshness.

Import the publication's public RSS archive into the local immutable ledger. No credentials are used.

List canonical post records and content-version digests. This omits full bodies; use get_post for exact content.

Return the canonical record and latest immutable content version for a local id, remote id, slug, canonical URL, or exact title.

Return the stored content-version history for one post, newest first, including exact bodies and SHA-256 digests.

Return timestamped RSS imports and local content changes, optionally scoped to one post.

Store timestamped metrics obtained from Substack's official MCP against an existing post. Never enter estimates.

Return the latest derived performance rates plus every stored raw metric snapshot for one post.

Rank posts using normalized, deterministic rates from each post's latest stored snapshot.

Calculate correlations between performance and word count, title length, and UTC send hour. Requires at least three measured posts.

Create local Markdown content in the immutable ledger. This never contacts or publishes to Substack.

Update selected local draft fields by appending an immutable version. Existing sent versions cannot be changed.