Substack MCP vs Twitterapi IO MCP
A side-by-side look at the Substack MCP and Twitterapi IO MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Substack MCP for social media work as a local process; choose Twitterapi IO MCP for social media as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Substack MCP when
- You need dedicated capabilities in the Social Media domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: other.
- You have the keys it needs:
SUBSTACK_PUBLICATION_URL, SUBSTACK_SESSION_TOKEN, SUBSTACK_USER_ID, SUBSTACK_MCP_HOME. - You want tools like
get_subscriber_count, list_published_posts, list_drafts.
Choose Twitterapi IO MCP when
- You need dedicated capabilities in the Social Media domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
search_twitterapi_docs, get_twitterapi_endpoint, list_twitterapi_endpoints.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Social Media | Social Media |
| Quality signal | 68/100 · Great | 65/100 · Great |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | other | No auth required |
| Pricing | Free | Free |
| Required env vars | SUBSTACK_PUBLICATION_URLSUBSTACK_SESSION_TOKENSUBSTACK_USER_IDSUBSTACK_MCP_HOME | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 44 | 10 |
| Directory activity | 6 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 14 | 7 |
| Full listing | View Substack MCP | View Twitterapi IO MCP |
Tools & capabilities
Substack MCP tools 14
get_subscriber_countGet the current subscriber count for your Substack publication. Returns `precision`: 'exact' when the API reports a true count, 'approximate' when only Substack's rounded value is available (the real number is that or higher — render it hedged, e.g. '1,000+'), or 'unavailable' with count -1. Never treat an approximate value as exact.list_published_postsList published posts with pagination. Returns title, date, slug, and URL for each post.list_draftsList draft posts. Returns title, creation date, and audience for each draft.get_postGet the full content of a published post by ID. Returns title, body HTML, metadata.get_draftGet the full content of a draft post by ID. Returns title, body, metadata.get_post_commentsGet comments on a published post. Returns commenter name, comment body, date, and reaction counts.get_sectionsList your publication's sections (categories). Returns each section's id and name. Use a section id as `section_id` when creating or updating a draft to file it under that section.get_post_analyticsGet performance stats (views, emails sent/delivered/opened, signups, subscribes, estimated value, comments, reactions) for a published post by ID. Substack has no per-post stats endpoint, so this searches your 500 most recent published posts for the ID; returns a not-found note if it isn't among them.list_scheduled_postsList posts scheduled for future publication, soonest first. Read-only visibility into what's queued — scheduling itself is done in Substack's editor (this server does not schedule, publish, or delete long-form posts). Returns id, title, audience, and scheduled time (`trigger_at`).create_draftCreate a new draft post. Accepts markdown body which is converted to Substack's format. Does NOT publish — creates a draft only.update_draftUpdate an existing draft post. Only works on unpublished drafts. Accepts markdown body.upload_imageUpload an image to Substack's CDN. Provide exactly one of `image_base64` (a base64 data URI) or `image_path` (a local file path). Returns a hosted image URL that is publicly fetchable by anyone with the link (an unlisted asset — not attributed to you or added to your feed).- +2 more on the listing page
Twitterapi IO MCP tools 7
search_twitterapi_docsSearch TwitterAPI.io documentation: API endpoints, guides (pricing, rate limits, filter rules), and blog posts. USE THIS WHEN: You need to find information across the entire documentation. RETURNS: Ranked results with endpoint paths, descriptions, and relevance scores. Examples: - "advanced search" → finds tweet search endpoints - "rate limit" → finds QPS limits and pricing info - "webhook" → finds webhook setup endpoints - "getUserInfo" → finds user info endpoints (supports camelCase)get_twitterapi_endpointGet complete documentation for a specific TwitterAPI.io endpoint. USE THIS WHEN: You know the exact endpoint name (e.g., from search results). RETURNS: Full details including path, parameters, cURL example, and code snippets. Common endpoints: - get_user_info, get_user_followers, get_user_following - tweet_advanced_search, get_tweet_by_id - add_webhook_rule, get_webhook_ruleslist_twitterapi_endpointsList all TwitterAPI.io API endpoints organized by category. USE THIS WHEN: You need to browse available endpoints or find endpoints by category. CATEGORIES: user, tweet, community, webhook, stream, action, dm, list, trend RETURNS: Endpoint names with HTTP method and path for each category.get_twitterapi_guideGet a TwitterAPI.io page from the offline snapshot by page key. USE THIS WHEN: You need the full content of a specific page (guides, docs, policies, contact, etc.). TIP: Use search_twitterapi_docs if you don't know the page key. RETURNS: Full guide content with headers, paragraphs, and code examples.get_twitterapi_urlFetch a TwitterAPI.io or docs.twitterapi.io URL. USE THIS WHEN: You have a specific link and want its full content. RETURNS: Parsed content from the offline snapshot. If not found, you can set fetch_live=true (restricted to twitterapi.io/docs.twitterapi.io).get_twitterapi_pricingGet TwitterAPI.io pricing information: credit system, endpoint costs, QPS limits. USE THIS WHEN: You need to know API costs, credit calculations, or rate limits. RETURNS: Pricing tiers, credit costs per endpoint, QPS limits by balance level.get_twitterapi_authGet TwitterAPI.io authentication guide: API key usage, headers, code examples. USE THIS WHEN: You need to set up authentication or see request examples. RETURNS: API key header format, base URL, cURL/Python/JavaScript examples.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Substack MCP
{
"mcpServers": {
"conorbronsdon-substack-mcp": {
"command": "npx",
"args": [
"-y",
"@conorbronsdon/substack-mcp"
],
"env": {
"SUBSTACK_PUBLICATION_URL": "YOUR_SUBSTACK_PUBLICATION_URL_HERE",
"SUBSTACK_SESSION_TOKEN": "YOUR_SUBSTACK_SESSION_TOKEN_HERE",
"SUBSTACK_USER_ID": "YOUR_SUBSTACK_USER_ID_HERE",
"SUBSTACK_MCP_HOME": "YOUR_SUBSTACK_MCP_HOME_HERE"
}
}
}
}
Twitterapi IO MCP
{
"mcpServers": {
"twitterapi-io-mcp": {
"command": "npx",
"args": [
"-y",
"twitterapi-io-mcp"
]
}
}
}
Frequently asked questions
Substack MCP is categorized under Social Media and uses a local stdio subprocess. Twitterapi IO MCP belongs to Social Media and uses a local stdio subprocess. Pick Substack MCP for social media work and Twitterapi IO MCP for social media.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Substack MCP is listed as free. Auth: other. Twitterapi IO MCP is listed as free. Auth: no auth required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add conorbronsdon-substack-mcp and twitterapi-io-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Substack MCP has a quality signal of 68/100 (Great) with 6 views, 0 installs and 44 GitHub stars. Twitterapi IO MCP has 65/100 (Great) with 1 views, 0 installs and 10 GitHub stars.