search_all_subscriptions

MCP tool from Substack MCP by ryanrodrigues25200525-svg

Search across every publication you're subscribed to or follow

How to use it

Project documentation lists search_all_subscriptions for the Substack MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.

Install Substack MCP

$node /absolute/path/to/substack-mcp/dist/index.js

FULL SUBSTACK MCP LISTING

Other tools in Substack MCP (13)

get_author_profile

Get an author's public profile (bio, social links, publications they write for)

get_inbox

New posts across every publication you read, newest first, with read/unread state. Optional tag filter

get_notes_feed

List recent items from your Notes home feed

get_post

Get a post's full content by domain + slug (works on paywalled posts if you're a paid subscriber)

get_post_by_url

Get a post's full content from any post URL, including generic substack.com/@handle/p-<id> links

get_post_comments

Get a post's comments, with nested replies, by domain + slug

get_post_comments_by_url

Same, from any post URL

get_recommendations

List publications a given publication recommends to its readers

list_published_posts

List recent posts from a publication

list_subscriptions

List your subscriptions (free and paid)

list_tags

List every tag you've set and which publications carry each one

search_posts

Search posts within a publication

tag_publication

Tag a publication by topic (e.g. financial-research) for use with searchallsubscriptions/getinbox's tag filter. Empty array untags