AI Microservice Architecture Generator
Design microservices and service boundaries in seconds
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How do you split a system into services without ending up with a distributed version of the same tangle? That is the question that decides whether microservices help you or cost you a year. Draw the boundaries around the data and they hold. Draw them around teams, or around nouns from a whiteboard, and every feature turns into three pull requests and a coordination meeting.
Short answer: AI Microservice Architecture Generator proposes service boundaries for a system, saying what each service owns, how services communicate, where data lives and which splits are not worth making.
What is AI Microservice Architecture Generator?
It is a free page that turns a description of a system into a service decomposition. You explain what the system does and how the parts relate, and the answer names the services, the data each owns exclusively, the calls between them and the failure behaviour at each boundary.
It will also tell you not to split. That is an important feature rather than a limitation. A description of a modest application with three developers should produce a recommendation to stay with one deployable, and a tool that never says that is not giving you architecture advice.
Data ownership first
Boundaries follow the data, since two services writing one table is not two services.
Communication style per edge
Synchronous where an answer is needed now, asynchronous where it is not, stated per call.
Failure behaviour defined
What each service does when a dependency is unavailable, rather than assuming it never is.
Willing to recommend a monolith
Splits that cost more than they return are named as splits not to make.
An order to extract in
Decomposition arrives as a sequence, since nobody splits everything at once.
Why Use AI Microservice Architecture Generator?
Because the failure mode here is expensive and slow to become visible. Services that share a database, or that must be deployed together to release a feature, carry every cost of distribution and deliver none of the independence. By the time that is obvious, six services exist and unwinding them is a quarter of work.
Reasoning about boundaries before extraction is cheap. AI Microservice Architecture Generator makes that reasoning explicit, including the part where it says a proposed boundary is wrong and explains what the data is telling you instead.
What works well
- Draws boundaries around data ownership rather than around org charts.
- Names the operational cost each service adds.
- Says which splits to skip, which is the advice teams most need.
- Free, so testing two decompositions before committing is easy.
What to watch for
- It cannot see your deployment maturity, which decides whether this is viable.
- Distributed transactions remain hard whatever the design says.
- Team size constrains service count more than any technical factor.
- A clean diagram hides the on call burden it creates.
How Does AI Microservice Architecture Generator Work?
You describe the system and the pressure that is pushing you toward splitting, and it proposes boundaries. That second part is what most descriptions omit. There is usually a specific reason: one component needs different scaling, one area changes far more often than the rest, or two teams keep blocking each other. The reason determines where the first cut belongs.
- Open AI Microservice Architecture Generator. Free, no account needed.
- Describe the system by its capabilities, not by its current folder structure.
- Say what is actually pushing you to split, in concrete terms.
- Give team size, deployment maturity and whether you already run containers.
- Set System Type to Microservices and Scale honestly, then turn Note Trade-offs on.
- Generate, and read the splits it advises against before the ones it recommends.
Important Two services sharing a database are one service with extra network calls. If a proposed decomposition leaves a shared table, that boundary is not real, and every problem you were trying to solve will still be there afterwards.
Best Use Cases
| Pressure you are under | What to describe | Likely advice |
|---|---|---|
| One component needs different scaling | Which one, and the load difference | Extract that one, leave the rest |
| Teams blocking each other on deploys | Who owns what and where they collide | A boundary at the collision, if the data allows it |
| One area changes far more often | Change frequency per area | Extract the volatile part first |
| Someone said microservices | The system and the team size | Often a modular monolith with clear internal boundaries |
Once the boundaries are agreed, choosing what each service is built with is the next question, and AI Tech Stack Recommender is the page for that decision.
Advanced Options Guide
Ten controls sit behind the accordion, and Scale plus Style decide how aggressive the decomposition is.
| Option | What it controls | When to change it | Suggested starting point |
|---|---|---|---|
| System Type | Web App, API / Backend, Mobile, Microservices, Data Pipeline, SaaS, Distributed or Monolith. | Set Monolith to get an honest answer about whether to split at all. | Microservices when deciding boundaries, Monolith when questioning the premise. |
| Scale | Small, Medium, Large or Enterprise. | The single biggest influence on how many services are proposed. | Your real scale, not your target. |
| Output | Design Overview, Diagram (text), Components + Flow, Tech Stack or Trade-off Analysis. | Components + Flow to see the calls between services. | Design Overview, then Components + Flow. |
| Style | Simple, Detailed, Best-Practice or Pragmatic. | Pragmatic produces fewer services and more honesty about cost. | Pragmatic. |
| Describe Diagrams | Adds written service and flow diagrams. | When the decomposition goes to a review. | On. |
| Note Trade-offs | States what each split costs operationally. | Always. Distribution is never free. | On. |
| Suggest Tech Stack | Names technologies for messaging, discovery and storage. | After the boundaries are settled. | Off for the first pass. |
| Add Scalability Notes | Says which service becomes the bottleneck and when. | Any system where the split was motivated by load. | On. |
| Depth | Slider from 1 to 100 for how far each service is described. | High once you are planning the first extraction. | Mid for the first pass. |
| Custom Instructions | Free text up to 1000 characters for real constraints. | Team size, on call rota, deployment tooling, what you cannot run. | A concrete line such as "six engineers, no dedicated platform team, one on call rota, we already run containers but not Kubernetes". |
Example Inputs
A description that names the pressure produces useful advice rather than a generic decomposition.
An online marketplace. Current system is one Rails application with a single
PostgreSQL database. Capabilities: listings, search, checkout, payouts to
sellers, messaging between buyers and sellers, and an admin back office.
The pressure is specific: search reindexing pins the database at peak and
slows checkout, and the payouts code changes constantly for compliance
reasons while everything else is stable. Eight engineers across two teams.
We deploy daily, run containers, and have one shared on call rota. No
platform team. Do not propose anything that needs someone watching a
message broker at weekends.
Naming two distinct pressures, one about load and one about change frequency, is what allows the answer to recommend two extractions rather than a full decomposition. The constraint at the end rules out a design the team could not operate.
Example Outputs
With Style on Pragmatic and Scale on Medium, the answer is deliberately conservative.
Recommended: extract two services, keep the rest together
Service A: Search
Owns the search index only. No shared tables.
Reads listing changes from an outbox table in the main application and
builds its own index.
Communication asynchronous, one direction. Search never blocks checkout.
On failure the main app falls back to a simple database query with a
banner saying results may be incomplete.
Service B: Payouts
Owns payout records, schedules and compliance rules.
Talks to the main application over a synchronous API for seller details.
Communication synchronous inbound, asynchronous outbound events.
On failure payouts queue and retry. Nothing customer facing is affected.
Splits deliberately NOT recommended
Listings and checkout they write the same data in the same transaction.
Splitting them would require a distributed transaction, which is a much
larger problem than the one you are solving.
Messaging it is stable, low volume and nobody is blocked by it. Extracting
it adds an operational burden with no return.
Admin back office it reads everything. As a service it would need access
to every other service's data, which recreates the shared database in a
worse form.
Extraction order
Search first. It has the clearest boundary, the loosest coupling and it
solves the load problem you actually have. Payouts second, once you have
learned how you want to run a second service.
The list of splits not to make is the most valuable part. Three of six capabilities stay where they are, each for a stated reason, and the reason is about data rather than about preference.
The test each proposed boundary has to pass is short, and most fail on the first row.
| Question | If the answer is no |
|---|---|
| Can this service own its data with no shared tables? | It is not a service, it is a module |
| Can it be deployed without the others? | The boundary buys you nothing |
| Can it keep working when a dependency is down? | You have added a failure mode, not removed one |
| Can your rota carry one more thing on call? | The cost lands on people, not on the diagram |
Tip Ask what would have to be true for a rejected split to become worthwhile. The answer gives you a trigger to watch for rather than a decision to revisit every quarter.
Tips & Common Mistakes
- ✅ Every service owns its data exclusively, with no shared tables.
- ✅ Each split is justified by a specific pressure, not by a preference.
- ✅ Failure behaviour is defined for every call between services.
- ✅ Service count is something your on call rota can actually carry.
- ✅ Extraction happens one service at a time, with the clearest boundary first.
- ✅ Any split needing a distributed transaction is treated as a warning sign.
The mistakes are well documented and still common. Splitting by technical layer, so a feature needs changes in three services. Sharing a database between services, which keeps every coupling and adds latency. Deploying services together, which means they are one service with extra steps. Building a decomposition a small team cannot operate. And treating the number of services as a measure of progress rather than as a cost.
Pro tip Ask for the modular monolith version of the same decomposition. Enforced module boundaries inside one deployable give you most of the clarity with none of the distribution cost, and they make a later extraction straightforward if it turns out to be needed.
AIToolsay puts a page in front of each job that already understands the domain, so this prompt box expects a system description and the pressure behind the question rather than an open request. The options include a scale setting that changes the number of services proposed and a style setting that decides between the textbook decomposition and one your team can run. The model selector lets a second engine draw the boundaries when the first set looks convenient rather than correct. It is free with no account step, so comparing an aggressive split with a conservative one is a five minute exercise. Session history keeps both under the result. The rest of the architecture tooling on AIToolsay is arranged the same way, so the system design, the stack choice and the decision records around this are each a page away.
Frequently Asked Questions
Will it tell me not to use microservices?
Yes, when your description points that way. Set Style to Pragmatic and Scale honestly, and a small team with a stable system will usually be advised toward a modular monolith.
Is AI Microservice Architecture Generator free?
Yes, with no account and no limit on how many decompositions you generate.
How should service boundaries be chosen?
By data ownership. A service that cannot own its data exclusively is not a service, and that single rule prevents most of the expensive mistakes in this area.
How many services is too many?
The practical limit is what your team can operate and be on call for. Say your team size and rota in the prompt, and the answer will be shaped by that rather than by an abstract ideal.
What about transactions across services?
Treat the need for one as a signal that the boundary is wrong. If it is unavoidable, ask for the saga or outbox pattern explicitly and expect it to add real complexity.
Can it plan a migration from a monolith?
Yes, and that is the most useful way to use it. Ask for an extraction order and it will start with the service that has the loosest coupling and the clearest benefit.
Describe the specific pressure pushing you toward splitting rather than the ambition, and read the splits it advises against first. That section usually saves more time than the recommendations do. The Telegram community is a good place to test a boundary against other people's experience, and the newsletter or push notifications will let you know when new architecture tools arrive.
Let AI Speak.