Substack MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| SUBSTACK_SID | Yes | Your Substack session ID cookie value (substack.sid) | |
| SUBSTACK_PUBLICATION | Yes | Your Substack publication URL (e.g., your-publication.substack.com) |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| substack_create_draftC | Create a new Substack draft post |
| substack_update_draftC | Update an existing draft's content |
| substack_append_to_draftB | Append content to an existing draft (for live blogging) |
| substack_add_code_blockC | Add a code block to a draft |
| substack_add_imageC | Add an image to a draft |
| substack_publishC | Publish a draft to your Substack |
| substack_post_noteC | Post a short note (like a tweet) |
| substack_get_draftsB | List all drafts |
| substack_get_postsC | List published posts |
| substack_live_blog_startC | Start a live blogging session |
| substack_live_blog_endA | End the current live blogging session |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
| Substack Drafts | List of all draft posts |
| Substack Posts | List of published posts |
| Substack Profile | Your Substack profile |
| Live Blog Session | Current live blogging session state |
Latest Blog Posts
MCP directory API
We provide all the information about MCP servers via our MCP API.
curl -X GET 'https://glama.ai/api/mcp/v1/servers/arthurcolle/substack-mcp'
If you have feedback or need assistance with the MCP directory API, please join our Discord server