Substack MCP Server
Substack MCP Server is an MCP server published by conorbronsdon, verified on MCP revision 2025-11-25; support for the current revision (2026-07-28) is not yet confirmed. Last verified 2026-08-20.
Does Substack MCP Server support the current MCP specification (2026-07-28)?
Not yet confirmed. Substack MCP Server is verified on revision 2025-11-25; we have not confirmed support for the current revision (2026-07-28) as of 2026-08-20.
Is Substack MCP Server a first-party (official) MCP server?
Undetermined. We have not verified the publisher relationship for Substack MCP Server (as of 2026-08-20).
How do I connect to Substack MCP Server?
Substack MCP Server is available via the package npm:@conorbronsdon/substack-mcp, the official MCP Registry under io.github.conorbronsdon/substack-mcp, the source repository at https://github.com/conorbronsdon/substack-mcp. Authentication: unknown. Transports: stdio.
Does Substack MCP Server support MCP revision 2025-11-25?
Yes. Substack MCP Server supports MCP revision 2025-11-25 (checked 2026-08-20).
Does Substack MCP Server support MCP revision 2026-07-28?
No. Substack MCP Server was checked against MCP revision 2026-07-28 and does not support it (checked 2026-08-20).
When were Substack MCP Server's facts last verified?
2026-08-20. Each fact on this page links to the sources used to verify it.
Substack MCP server: posts are draft-only by design; short-form Notes publish immediately.
Which MCP spec revisions does Substack MCP Server support?
Substack MCP Server has 2 verified spec-support records. Each row lists the revision, the verified status, the evidence URL, and the date that fact was last checked.
| Spec revision | Status | Last checked | Evidence |
|---|---|---|---|
| MCP 2025-11-25 | Supported | Source | |
| MCP 2026-07-28 | Not supported | Source |
How widely adopted is Substack MCP Server?
Not ranked in The MCP 500: insufficient public data (coverage floor not met) (snapshot ). The Adoption Index measures public signals only; it says nothing about quality.
Repository and package signals for Substack MCP Server
Measured directly from the source registries, not asserted from a document. Each figure carries the date it was read; none of it affects the verified spec status above.
Repository as of
- Stars
- 20
- Forks
- 6
- Last pushed
- (57 days ago)
- Created
- Open issues
- 1
- Primary language
- TypeScript
- License (repository)
- MIT
- Continuous integration
- Present
- Tests
- None detected
- Security policy
- Present
Declared topics: ai-agents, claude, claude-code, content-creation, developer-tools, mcp, mcp-server, model-context-protocol, substack, typescript — author-declared on the repository, not our taxonomy.
Package (npm) as of
- Latest version
0.6.2- Last published
- First published
- Releases
- 9
- License (package)
- MIT
- Maintainers
- 1
- Direct dependencies
- 2
- Unpacked size
- 260 KB
- Registry signature
- Signed
- Build provenance
- Attested
How was this verified, and what are the sources?
Verified · method: sdk-protocol-constant
· confidence 0.85 (Good).
- Official MCP Registry record for io.github.conorbronsdon/substack-mcp at version 0.6.2 - lists package npm:@conorbronsdon/substack-mcp and repository https://github.com/conorbronsdon/substack-mcp - accessed
- npm registry metadata for @conorbronsdon/substack-mcp at published version 0.6.2, retrieved 2026-08-20 - declares a dependency on @modelcontextprotocol/sdk, which resolves to @modelcontextprotocol/sdk@1.30.0 - accessed
- Published artifact of @modelcontextprotocol/sdk@1.30.0, retrieved 2026-08-20 - the artifact declares LATEST_PROTOCOL_VERSION 2025-11-25 and carries no 2026-07-28 implementation. Read from the artifact itself, not from release notes - accessed