Does the AI just generate generic boilerplate code?

No. Skeema reads your connected components, detects async patterns (Kafka, queues, streams), picks the right language for each service's tech stack, and generates handlers that match real flow messages — not generic CRUD.

What languages and frameworks does code generation support?

TypeScript (Express, Fastify, NestJS), Python (FastAPI, Django, Flask), Go (Gin, Fiber), Java (Spring Boot), Ruby, C#, Rust, and PHP. ORMs include Prisma, Drizzle, SQLAlchemy, and Mongoose.

How accurate are the simulation and cost estimates?

Simulation uses heuristics based on node type, traffic share, fan-out, and async patterns — it's directional, not absolute. Cost estimates use 2026 AWS, GCP, and Azure SKU pricing scaled by your modeled traffic. Both are best used to compare architectures.

Can I import an existing schema or codebase?

You can paste a Prisma, PostgreSQL, or MySQL schema and get an ER diagram instantly via the hybrid regex + AI parser. Code-to-architecture import is in beta.

Does Skeema work for AI agent diagrams and pipelines too?

Yes. Beyond classic backends, Skeema supports AI Agent graphs (LLM, Tools, Retriever, Memory, Router, Human-in-Loop), step-by-step agent simulation with animated playback, and Pipeline diagrams that export to n8n.

What happens to my derived views if I delete a source node?

Skeema marks the derived board as orphaned and shows a lineage banner — it doesn't break. You can keep the board independently, regenerate it from the new source, or delete it.

Do you have a free tier? What's included?

$0 forever — 3 boards, 5 AI generations per month, 2 load simulations per month, all diagram types, PNG export, and community support. No credit card required.

How do I get started with Skeema, and does it cost anything?

Create a free account at app.skeema.cloud — no credit card required. Skeema runs entirely in the browser, so there's nothing to install. The Free plan includes 3 boards, AI generation, and every diagram type; upgrade to Pro from inside the app when you need more.

How is Skeema different from asking ChatGPT or Claude to draw a diagram?

A chatbot returns a static image or a Mermaid snippet you can't interact with. Skeema generates a live, editable model — every node is a real service you can rewire, simulate under load, cost against real cloud SKUs, and turn into production code. The diagram is the starting point, not the deliverable.

AI architecture diagram generator for backend engineers

Diagrams that think.Systems that ship.

Skeema turns a prompt into a production-quality architecture — then derives the ER schema, sequence flows, and code for every service. One workspace. One source of truth.

Start building free Watch the launch film

No credit card
Free forever for solo
Open source friendly

Sskeema / iot-telemetry● saved~100K usersExport

Phase: 100K×

Score

C 73

Cost

$80/mo

+$45

Unlocks at this tier

Put a load balancer in front of the gateway

Above ~100K users a single gateway is a fail-stop point. Front it with an LB to scale horizontally.

Adopt this phase

Legend

AI suggested

Code generated

Critical risk

Improvement

BuildAskIoT telemetry platform — device fleet, stream processing, time-series storeGenerate

Architecture diagramsER schemasSequence flowsAI agent graphsCI/CD pipelinesLoad simulationCost estimatesProduction code

01The problem

Every diagram tool stops at the diagram.

You draw an architecture. Then you redraw the ER schema from scratch. Then the sequence flow from scratch. Then you write the code with the diagram closed. Nothing stays in sync. Every artifact is an island.

That's not system design. That's documentation theater.

Disconnected outputs

Architecture, ER schema, and sequence flows each live in their own file with nothing linking them together.

No system intelligence

The tool knows your shapes, not your services. No load simulation, no schema validation, no cost signal.

Code drifts immediately

Generated boilerplate never reflects what the diagram actually says — so the diagram rots the day you ship.

02The Skeema Approach

Three things, all connected.

The architecture is the source of truth. Every other view is derived from it — and stays linked.

Start with the system

Describe your backend in plain English. Skeema generates a production-quality architecture with realistic services, infrastructure, and async patterns.

Derive every view

Hover any node → generate an ER diagram for the database. A sequence diagram for the service. Production code for the API. All linked back to their source.

One living project

Everything lives in a Skeema Project. Edit the architecture, and your derived views know. No more silent drift between diagram and code.

03Live Demo

From prompt to system. Watch it build.

This is the actual Skeema workspace. Watch a prompt become a production architecture — services, async event flows, a live load simulation, and a schema health review. Switch tabs for ER and sequence diagrams.

SYSTEM ARCHITECTURE

interview-platformsaved

Search nodes⌘K

B 87~5K usersShareExport

Awaiting your prompt

Describe a system in the bar below. Skeema generates the architecture with every service connected.

Run SimulationArchitecture Review

Describe your stack, expected scale, and any constraints for a more accurate review.

Describe your system — e.g. "microservices with API gateway, Redis cache, Kafka"

Auto

⌘↵

Generate

9 services·11 connections·3 async event flows·generated in 8s

04The platform

Everything your system needs. In one place.

Not a drawing tool with AI bolted on. Simulation, cost modeling, schema analysis, code generation, and version control — built into every diagram from the first prompt.

Load Simulation

Clear

HEALTH56%

ISSUES4 / 16

P991.7s

Supports ~5K users·weakest linkAI Evaluation

ADJUST LOAD / SCENARIO

TOP PRIORITYCRITICAL

API Gateway Critical Load

The API Gateway is overwhelmed by requests, leading to timeouts and dropped connections.

—High request volume exceeding capacity

—Insufficient load balancing across instances

OTHER ISSUES3

AI Evaluation CPU OverloadCRITICAL

The AI Evaluation service is CPU-bound, delaying scoring.

Sandbox Exec saturationCRITICAL

Sandbox VMs hit concurrency limits under load.

Kafka caps throughputHIGH

Event bus backpressure delays persistence.

Load simulation

Stress-test before you build

Dial from 100 to 100K concurrent users. Skeema computes per-path latencies, grades the architecture A–F, and names the exact bottleneck.

Cost estimator

Real cloud bills, pre-deploy

2026 AWS, GCP, and Azure SKUs mapped to every node — with auto-insights.

Schema Health

87/ 100

Schema Health

9 entities · 11 relations · 46 attrs

0 Errors1 Warning9 Infos

STATIC CHECKS3 issues

"API Gateway" needs autoscaling

Integritygateway.capacity

Single-instance gateway is a throughput ceiling under load.

Fix: Add a load balancer + horizontal autoscaling policy.

Kafka topics need partitions

Performancekafka.topics

High-volume topics should be partitioned for parallel consumers.

Fix: Partition hot topics for parallel consumption.

Submission missing timestamps

Conventionsubmission

created_at / updated_at recommended on all entities.

Fix: Add timestamp columns.

Schema health

Nine rules. Zero bad schemas.

Missing keys, absent indexes, orphan entities — caught and graded automatically.

Code generation

Schemas become code instantly

Prisma, PostgreSQL, MySQL, and Mongoose — deterministic output, no AI cost, always in sync with the diagram.

Connected views

Derive from any node

Database nodes spawn ER diagrams. Services spawn API routes. Lineage tracked.

Version history

Diff any two versions

Color-coded diffs on canvas. Snapshot, restore, and review like code.

Flow analysis

Latency on every arrow

Critical paths, sync/async counts, and bottleneck flags on each sequence.

Use cases

One canvas, six jobs done properly.

Skeema replaces the diagram tool, the schema designer, the whiteboard cosplay, and the cost spreadsheet — each view generated, connected, and kept honest.

01Architecture diagram generatorDescribe a system in plain English — get a production-grade architecture diagram with services, gateways, queues, datastores, and sync/async edges laid out in domain zones.02ER & database schema designDerive an entity-relationship diagram from any architecture, or paste a Prisma, PostgreSQL, or MySQL schema and get the ER view — keys, cardinality, junction tables — instantly.03Sequence diagram makerTrace any request path into a sequence flow: lifelines, activation bars, async messages, and per-hop latency estimates that add up to a real budget.04AI agent workflow builderDesign LLM agent systems — models, tools, retrievers, memory, routers, human-in-the-loop — and replay the whole graph step by step with animated playback.05Load simulation & bottleneck analysisPush simulated traffic through the diagram. Read P50/P95/P99 latency, watch the queue back up, and find the bottleneck before production finds it for you.06Cloud cost estimationReal AWS, GCP, and Azure SKUs mapped to every node, scaled by your modeled traffic — see the monthly bill of an architecture before you build it.

05Connected diagrams

One system. Every view connected.

Every diagram in Skeema knows where it came from. Your ER schema remembers it was derived from the Postgres node. Your sequence flow knows which services it spans. Edit the architecture, and the connections persist.

Mint dot indicator

Every node with derived views gets a small mint dot — at a glance, you see what's already mapped.

Hover-strip action menu

Hover any node → a contextual action strip appears with only the actions that apply. No clutter.

Lineage tracking

Delete a source node? Skeema marks the derived board, doesn't break it. Move forward without fear.

06Project Docs

One click. Full project documentation.

Skeema reads your architecture, your ER schemas, and your flows — and writes the docs your team actually needs. Markdown. Versioned. Exportable.

OverviewBoardsDocsSettings

intervee-ai

AI-powered coding interview platform

nodes

ER schemas

flows

Last generated 3m agov4 · 1.2k tokens

Includes

Overview

Architecture

Data Model

Flows

Integrations

Tech Stack

docs.mdgenerated

# intervee-ai

An AI-powered coding interview platform featuring realtime candidate sessions, sandboxed code execution, asynchronous AI evaluation, and Stripe-billed subscriptions.

## Overview

The system handles up to 10,000 concurrent interview sessions, processes code submissions in isolated Firecracker microVMs, and pipelines evaluations through Kafka for asynchronous AI scoring.

## Architecture

Web App— Next.js client, server-rendered
API Gateway— Fastify · request routing, auth
AI Evaluation Service— Python · FastAPI · OpenAI
PostgreSQL— primary store · 5 entities

## Data Model

Five entities: users, interviews, submissions, scores, subscriptions. See linked ER diagram for full schema.

## Integrations

Stripe— subscriptions, webhooks
Kafka— 4 topics · evaluation.requested

Generated in real time · References real component names · Auto-regenerates on demand

diagram types, one engine

100K

concurrent users simulated

schema rules enforced

code dialects generated

A–F

every architecture graded

08Built for teams

For teams that actually ship.

Presence, reviews, comments, and full version history — collaboration that lives on the canvas, not in a separate doc.

4 editing now

Real-time presence

Live collaborator avatars on every board. Built for paired design sessions.

Rajesh · 2m

Should we add Redis for session cache?

approved · ready to merge

Reviews + comments

Request reviews, leave per-node comments, approve or request changes. Notifications throughout.

v8nowamanda

v712m agorajesh

v61h agojordan

Version history + diff

Every change is a snapshot. Diff between any two versions with a visual overlay on the canvas.

09Pricing

Simple. Honest.

Start free. Upgrade when you ship faster.

Free

Explore without a card

$0/ forever

Start Free

3 boards
5 AI generations / month
3 AI chat messages / month
2 load simulations / month
100 nodes per board
PNG export
5 version-history snapshots
Community support

Pro

For developers who ship fast

$12/ per month

Start Pro

Unlimited boards
200 AI generations / month
300 AI chat messages / month
200 simulations / month
PNG, SVG, PDF, Markdown & HTML exports
Schema codegen + AI suggestions
Diff view + unlimited history
5 collaborators per board
Priority email support

Coming soon

Team

For teams shipping together

Soon/

Everything in Pro
Unlimited collaborators
Shared org templates & playbooks
Cross-artifact consistency engine
SSO / SAML + audit logs
Centralized billing & seats
Dedicated support + onboarding

Free forever tier · No credit card required · Cancel anytime · 14-day money-back guarantee

10FAQ

Questions, answered.

How Skeema models systems, generates real code, and what's included in each plan.

Those tools draw shapes. Skeema models systems. Architecture nodes are real services with technology, async patterns, and load behavior — and they derive ER schemas, sequence flows, and production code that stay linked back to the source.

Need a hand?

Real humans — not bots. We typically reply within a few hours during business days.

support@skeema.cloud

Avg response · 3h 24m

Quick links

Documentation/docs Quickstart guide2 min read Discord communityask the team Open the appapp.skeema.cloud

Stop drawing diagrams.Start designing systems.

Skeema is live. Describe your system, get a production-quality architecture, and ship it — free to start, no card required.

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