Substack
Publishing platform for newsletters, subscriptions, and creator communities.
Our take
Where Substack fits in an AI agent stack
We would not call Substack a universal answer, but it clearly has a place in this market. Across the directory, it shows up repeatedly in content creation work. That usually means builders are trusting it with a meaningful slice of the workflow rather than treating it as a throwaway experiment.
What I like is that the use cases are not all theoretical. We see Substack across sectors like Consulting and Freelancing, which gives us a better signal about where it actually holds up in the wild. When a tool keeps resurfacing in different business contexts, it usually means it solves a real operational problem instead of just looking good in a demo.
The main caveat is fit. Substack looks best when the team knows whether it wants speed, control, or reach. Based on the directory, the usage mix leans intermediate, and the most common pairings with Claude Code, Claude Cowork, and Perplexity suggest that operators are rarely using it alone. We would frame it as one layer in a working stack, not the whole strategy by itself.
Best for
- Teams building Content Creation workflows where the tool needs to do real work inside the process
- Operators in sectors like Consulting and Freelancing who want a proven starting point instead of inventing the stack from scratch
- Intermediate builders who want to work from existing patterns we can already see in the directory
Not ideal if
- Teams looking for Substack to replace every other system in the stack
- Operators who do not yet have a clear workflow, owner, or business goal behind the automation
- Anyone expecting the tool choice alone to create ROI without good process design around it
Why we think builders keep coming back to Substack
We usually pay attention when a tool keeps appearing in live strategies instead of just comparison content. Substack has that pattern here, which is why I think it deserves a stronger page than a simple feature summary.
Watch-out: Substack still needs a clear role in the stack. If the workflow is vague, the tool will not rescue it by itself.
Top Strategies Using Substack
A former economics PhD student went from a $2,200 annual run-rate to a projected $200,000 a year in five months by running content, coaching, and community operations through Claude
A newsletter writer turned a viral prompt into a full Claude Code agent that scrapes her own engagement data and drafts a week of Substack Notes, cutting Sunday planning from 90 minutes to 20
Where Substack shows up most
Frequently Asked Questions
What does Substack actually do in these AI agent stacks?
Substack usually handles one important layer of the system rather than the entire business workflow. On this site, it most often appears in content creation deployments where the operator needs the stack to do something useful, repeatable, and measurable.
Who is Substack best for?
Teams building Content Creation workflows where the tool needs to do real work inside the process Operators in sectors like Consulting and Freelancing who want a proven starting point instead of inventing the stack from scratch Intermediate builders who want to work from existing patterns we can already see in the directory
When is Substack probably the wrong choice?
Teams looking for Substack to replace every other system in the stack Operators who do not yet have a clear workflow, owner, or business goal behind the automation Anyone expecting the tool choice alone to create ROI without good process design around it
How are builders pairing Substack with other tools?
Most teams here are not using Substack in isolation. The most common pairings we see are Claude Code, Claude Cowork, and Perplexity, which suggests builders are using it as one layer in a broader operating stack.
Is Substack beginner friendly or more advanced?
The usage pattern on BuiltWithAgents leans intermediate. I would not judge the tool only by its UI; the real question is whether the workflow around it is simple or operationally complex.
What kinds of businesses are using Substack?
We see Substack used across sectors like Consulting and Freelancing. That does not mean it fits every business, but it is a good sign that the tool is surviving outside a single niche or creator bubble.
How should I evaluate whether Substack is worth it for me?
I would start by reading the case studies on this page and asking a simple question: does Substack solve the bottleneck, or is it just adjacent to it? If the tool is helping the workflow move faster, close more leads, save more time, or reduce operational drag, that is the signal that matters.
Example Use Cases
Content Creation workflows
The clearest fit we see for Substack is inside content creation systems where speed and reliability matter more than novelty.
Consulting operating systems
Several examples on the site point to Substack being useful when teams in Consulting want to turn a good manual process into something repeatable and easier to scale.
Stack glue for real deployments
I would look at Substack most seriously when it needs to sit alongside other tools and own one important part of the workflow well, rather than pretending to do everything.
Common Stack Pairings
Claude Code
2 shared strategies
Anthropic's agentic coding tool for building and editing codebases
Claude Cowork
1 shared strategies
Claude's browser-based agent for automating web tasks and research
Perplexity
1 shared strategies
AI-powered search engine that answers questions with cited sources
Notion
1 shared strategies
All-in-one workspace for notes, docs, databases, and project management