S

Substack MCP

Safe Substack creator operations across publications: rich drafts, Notes, analytics, and consented subscribers; long-form posts stay draft-only, while Notes publish immediately

conor-bronsdon/substack-mcp · v1.3.0 · Tools & Integrations

Conor BronsdonOwner verifiedcaution
InstallSource
72Follow0

Trust Score

72

Security

64

Surfaces

2

What is Substack MCP?

Substack MCP is a published tools & integrations plugin for AI coding agents in the codex ecosystem, developed by Conor Bronsdon and distributed through the HOL AI plugin registry. Safe Substack creator operations across publications: rich drafts, Notes, analytics, and consented subscribers; long-form posts stay draft-only, while Notes publish immediately

Canonical slug
conor-bronsdon/substack-mcp
Version
v1.3.0 · updated Oct 4, 2026

Trust & Reputation

HOL Trust Score
72

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64pts
Maintenance
100pts
MCP Posture
100pts
Plugin Security
64pts
Provenance
70pts
Publisher Quality
75pts

Registry Snapshot

Publisher verification
No
Marketplace source
Unknown
Scanner
Broker fallback
Safety label
caution
Digest verified
Yes
1 bundled skill — copy or download SKILL.mdOpen skills

Trust & reputation

Trust & Reputation

HOL Trust Score
72

Factor Analysis

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64pts
Maintenance
100pts
MCP Posture
100pts
Plugin Security
64pts
Provenance
70pts
Publisher Quality
75pts

Provenance

Plugin root
.
Source repo
https://github.com/conorbronsdon/substack-mcp
Source commit
ef8815b3df8a…
Publisher verified
No
Owner verified
@conorbronsdon

Continuous scanner CI detected

No action is required. This plugin receives the full trust score.

Verified badge not detected

Add the HOL verified badge to the repository README to score +2% trust. Plugin owners can open that pull request from Guard Plugins.

Security Posture

caution
Safety label
64
Security score
0
High findings
Provider
registry-broker-fallback
Grade
D · caution
Version
Unknown
cisco-skill-scanner: unknown

Findings

mediumpublishabilitypublishability.link.missing.websiteURL

websiteURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.privacyPolicyURL

privacyPolicyURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.termsOfServiceURL

termsOfServiceURL should be present for marketplace readiness.

infoskill-securityskill-scan.unavailable

Cisco skill scanner timed out after 60000 ms

Substack MCP — Frequently asked questions

What is Substack MCP?
Substack MCP is an AI plugin in the HOL registry. Safe Substack creator operations across publications: rich drafts, Notes, analytics, and consented subscribers; long-form posts stay draft-only, while Notes publish immediately
How do I install Substack MCP?
Install Substack MCP in your harness: Codex — codex plugin marketplace add conorbronsdon/substack-mcp; Claude Code — /plugin marketplace add conorbronsdon/substack-mcp; MCP — git clone https://github.com/conorbronsdon/substack-mcp. Full step-by-step guidance is on the HOL plugin page.
How do I install Substack MCP in Codex?
To install Substack MCP in Codex, start with codex plugin marketplace add conorbronsdon/substack-mcp. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install Substack MCP in Claude Code?
To install Substack MCP in Claude Code, start with /plugin marketplace add conorbronsdon/substack-mcp. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
How do I install Substack MCP in MCP?
To install Substack MCP in MCP, start with git clone https://github.com/conorbronsdon/substack-mcp. The complete step-by-step install guide for MCP is on the HOL plugin page.
Is Substack MCP free?
Pricing for Substack MCP is published on its HOL plugin page when the maker schedules a launch.
Who publishes Substack MCP?
Substack MCP is published by Conor Bronsdon and listed on HOL.
Is Substack MCP available now?
Substack MCP availability is listed on its HOL plugin page.

Install Guidance

Install in Claude Code

Install through the Claude Code plugin marketplace.

Claude Code plugin docs
  1. 1

    Add the marketplace

    Run this inside a Claude Code session.

    claude code
  2. 2

    Install the plugin

    Use the plugin name and the marketplace name shown by the previous command.

    claude code
  3. 3

    Scripted alternative

    Non-interactive equivalent for scripts and CI pipelines. Add --scope project to pin the install to one repository.

    shell

Plugin Manifest

{
  "name": "substack-mcp",
  "version": "1.3.0",
  "description": "Safe creator operations for Substack: rich drafts, Notes, analytics, and consented subscribers. Long-form posts stay draft-only; Notes publish immediately.",
  "keywords": [
    "mcp",
    "substack",
    "newsletter",
    "ai",
    "claude",
    "mcp-server",
    "model-context-protocol",
    "cli",
    "markdown",
    "newsletter-automation",
    "content-creation"
  ],
  "author": {
    "name": "Conor Bronsdon",
    "url": "https://github.com/conorbronsdon"
  },
  "homepage": "https://github.com/conorbronsdon/substack-mcp",
  "repository": "https://github.com/conorbronsdon/substack-mcp",
  "license": "MIT",
  "mcpServers": "./.registry/mcp.json",
  "interface": {
    "displayName": "Substack MCP",
    "developerName": "Conor Bronsdon",
    "shortDescription": "Substack drafts, analytics, consented subscribers; Notes publish immediately.",
    "longDescription": "Runs the published Substack MCP server over stdio for safe creator operations across publications: rich drafts, Notes, analytics, and consented subscribers. Long-form posts have no publish, delete, or schedule tools. Notes publish immediately. Configure your own credentials outside the plugin.",
    "category": "Productivity",
    "capabilities": [
      "Read",
      "Write"
    ],
    "defaultPrompt": [
      "List my recent Substack posts."
    ]
  },
  "skills": "./",
  "registryIndexVersion": 5
}

Marketplace Source

Repo URL
https://github.com/conorbronsdon/substack-mcp
Marketplace path
Unknown
Source path
.
Install policy
Unspecified

Skills

1 SKILL.md file ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli

  • substack-creator-workflow

    skills/substack-creator-workflow/SKILL.md

    Read publication context, reuse existing Substack work, and prepare or review private drafts using the configured Substack MCP tools.

    Raw SKILL.md

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File Inventory

.claude-plugin/plugin.json

file

470 bytes

00283f3a31f401d0…

.codex-plugin/plugin.json

plugin-manifest

1,254 bytes

d236312e1d5a5407…

.mcp.json

file

213 bytes

34626c8ad68861af…

.registry/mcp.json

mcp-config

127 bytes

b088818b067a47d1…

AGENTS.md

file

941 bytes

08de932f065ee867…

CLAUDE.md

file

3,237 bytes

86ebee642082a7a1…

package-lock.json

file

198,687 bytes

83c4263164ea18e0…

package.json

file

3,516 bytes

ced995e813235130…

README.md

file

37,540 bytes

4ab4536a5502aecb…

SECURITY.md

file

2,022 bytes

5bf394d14b00cb58…

skills/substack-creator-workflow/SKILL.md

skill

2,666 bytes

d8645268eb975b84…

tsconfig.json

file

678 bytes

309c20b89a9eb936…