Writing Substack

Writing Substack Notes

Create Substack Notes: short, punchy, engagement-optimized.

Trigger

"write a Substack Note", "Substack content", "Note ideas"

Format Constraints

• Total length: Under 500 characters (Substack Notes limit).
• Hook: First line grabs attention. Bold claim, surprising stat, or provocative question.
• Body: 2-5 short paragraphs. One idea per paragraph. Conversational tone.
• CTA: End with engagement driver (question, invitation, teaser).
• Hashtags: 2-4 relevant hashtags suggested separately.

Process

1. Confirm topic and angle with user.
2. Load voice profile if configured (see writing-style skill).
3. Draft Note within 500 char limit.
4. Suggest 2-4 hashtags.
5. Offer 1-2 alternate hooks if user wants options.

Output Format

{Hook line}

{Body paragraph 1}

{Body paragraph 2}

{CTA}

---
Suggested hashtags: #tag1 #tag2 #tag3
Character count: {n}/500

Examples

Topic: Product management lessons

Most PRDs are fiction.

They describe a world where scope never creeps, timelines hold, and stakeholders agree on day one.

The best PMs I know write living docs. Updated weekly. Contradictions included.

What does your PRD process actually look like?

---
Suggested hashtags: #ProductManagement #PRD #BuildingProducts
Character count: 312/500

Rules

• Count characters accurately. Hard limit 500.
• Conversational, not corporate. Write like talking to a smart friend.
• One idea per Note. If there are multiple ideas, suggest a thread.
• No clickbait. The hook should deliver on its promise.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: mshadmanrahman
• Source: mshadmanrahman/pm-pilot
• License: MIT
• Homepage: https://github.com/mshadmanrahman/pm-pilot#readme

Install and usage instructions live in the source repository linked above.