Solarch
Draw the architecture. Solarch writes the code.
Solarch is a genuine category pick for NestJS teams that treat architecture as a deliverable. The default-deny Rules Engine and the two-stage Code Engine — deterministic skeleton at zero tokens, then surgical AI at ~300 tokens per function — are what separate it from prompt-to-code tools. The VS Code extension's Problems-panel drift and the CLI's merge-blocking drift guard mean the diagram and the repo cannot silently diverge. Draw at $5/mo makes the validation half cheap to try. But $100/mo for full codebase generation is real money for a tool whose codegen is NestJS-oriented, and Nx or Prisma cover far wider ecosystems. Buy Solarch for the architecture guarantees, not for breadth.
Verified 5d ago · liveness 70/100 · cite: rightaichoice.com/tools/solarch
- NestJS backend teams
- Software architects enforcing strict layering boundaries
- Teams blocking architectural drift in CI/CD
- Architecture-first developers who design before coding
- Frontend-only developers
- Beginners without backend layering knowledge
- Code-first teams that treat a rules engine as friction
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Skip Solarch if your backend is not TypeScript/NestJS-layered or your team deliberately works code-first and would treat a default-deny rules engine as friction rather than protection.
Full codebase generation is gated to the $100/mo Code tier — the $20/mo Build tier generates code but exports it as a skeleton you finish yourself.
Solarch's ladder is unusually wide: Free for 2 projects, Draw at $5/mo for unlimited sketching, Build at $20/mo for code generation and ZIP export, Code at $100/mo for full codebase writing, and Team at $30/seat for shared projects. The $5/mo Draw tier undercuts almost every design tool for what is really a validation and canvas product. The $100/mo Code tier is priced like a serious engineering tool, which makes sense only for teams that want Solarch authoring the codebase rather than a human
In short
Solarch — Draw the architecture. Solarch writes the code. Best for NestJS backend teams, Software architects enforcing strict layering boundaries, Teams blocking architectural drift in CI/CD. Free to start; paid plans from $5/mo.
What people actually say about Solarch — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
17 mentions across 3 sources (YouTube, Product Hunt, Lemmy) · researched Aug 26, 2026.
Average across the 3 sources that answered — each source counts once, not each post.
- +Solves architecture drift by enforcing diagram-code sync from the start.
- +Default-deny rules engine rejects illegal connections early in design.
- +Surgical AI fills only empty function bodies, keeping business logic human.
- +Deterministic skeleton generation reduces boilerplate with zero tokens.
- +Type safety flows from schema to contract to UI, catching mismatches early.
- −No support for frontend frameworks like Angular or Next.js yet.
- −Zero long-term usage data; community feedback is only launch-day comments.
- −Steep learning curve; designed for advanced, disciplined backend devs.
- −Potential lock-in to Solarch's graph paradigm makes exiting risky.
- −Free tier likely limited in nodes/tables, restricting serious evaluation.
- • The $5/mo tier might lack essential features like CLI or codegen, forcing an upgrade
- • Enterprise pricing is opaque; custom quotes could include setup fees
Viability Score
How well maintained and how widely used is Solarch? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: October 2026
How we score →Key Features
- Live node-edge architecture canvas
- Default-deny Rules Engine that rejects illegal edges as you draw
- 21 node types across 8 families (Data, Business, Access, Infra, Client, Security, Config, Structure)
- 16 typed semantic edges between nodes
- Deterministic skeleton codegen at zero tokens (DTOs, entities, constructor injection)
- Surgical AI fills only empty function bodies at ~300 tokens per function
- Fractal Graph semantic zoom from macro modules to micro-graphs
- Vector Export turning architecture into AI-readable memory
- Autonomous QA with red-team testing, smart seeding and time-travel snapshots
- Ghost references so a node lives in one tab and others import it by reference
- Mermaid diagram export
- API contract export
- VS Code Extension with revision timeline and live drift in the Problems panel
- CLI with drift guard, two-way sync and NestJS codegen for CI
- MCP Server providing architecture context and rule-checked writes for AI agents
About Solarch
Solarch is an architecture-first backend development platform. You draw your system on a live node-edge canvas — controllers, services, repositories, tables, DTOs, queues — using 21 node types across 8 families and 16 typed semantic edges. A default-deny Rules Engine validates every connection as you draw it: a Controller that reaches directly for a Table is rejected the moment you wire it, not three commits later. The Code Engine runs in two stages. A deterministic compiler turns the graph into a skeleton with zero tokens (DTOs, entities, constructor injection straight from the edges), then a surgical AI fills only the empty function bodies, at roughly 300 tokens per function. Export comes out as code, a Mermaid diagram, or vector memory for AI agents. Developer tooling sits on top: a VS Code extension that scans your TypeScript on save and pushes drift findings into the native Problems panel, a CLI with drift guard, two-way sync and deterministic NestJS codegen for CI, and an MCP server that hands Claude, Cursor and other agents the real architecture — every write only commits when the edges pass. GraphRAG and LangGraph ground plans in a vector-indexed library of canonical patterns. Type safety runs from schema to API contract to typed client. The Free tier covers 2 projects and includes the AI architect; Draw is $5/mo for unlimited projects; Build is $20/mo and adds code generation and ZIP export; Code is $100/mo with maximum AI usage; Team is $30/seat for shared projects. Paid plans start with a 7-day trial and the free tier needs no credit card. This is for disciplined backend developers, especially NestJS teams, and not for frontend-only work or code-first shops.
Behind the Verdict
Solarch's argument is that most AI coding tools generate code and hope the architecture catches up, so it inverts the order: the AI proposes, the rules verify, and only a correct graph lands on the canvas. That is not a marketing line here — it is enforced in the drawing surface. Wire a Controller straight to a Table and ERR_002 fires immediately, because Solarch runs default-deny: every connection that is not whitelisted is forbidden. The agent then inserts a Service and a Repository and re-applies, and rejections feed back until the graph is clean or nothing commits. The Code Engine is split deliberately. Stage 1 is a deterministic compiler with zero token cost that reads the edges and emits DTOs, entities and constructor injection. Stage 2 is a narrow AI pass that fills only the empty function bodies. That split is the real cost story: you are not paying tokens to regenerate boilerplate you already designed. Where it gets practical is drift. The VS Code extension rescans a .ts file on save with a 500ms debounce, builds an As-Is graph from your code, pulls the To-Be graph and rule catalog with a 60-second cache, diffs them, and paints findings by severity — red for missing-in-code or rule violations, yellow for unapproved additions, blue for property drift. The CLI engine runs in-process, so push, pull and generate work from buttons using the same identity files the terminal uses, and the drift shown is byte-for-byte what CI blocks on. It also keeps a revision timeline of the last 30 observed revisions per workspace with node/edge deltas. The limits are honest ones. Correct graphs require fluency in the schema vocabulary — 21 node types across 8 families and 16 typed edges — plus knowledge of the canonical patterns the GraphRAG library grounds plans in. Codegen and drift tooling are aimed at NestJS, and Cursor and Claude are the export and agent targets. If your backend is not TypeScript-layered, or your team works code-first and finds a rules engine friction rather than safety, the value proposition mostly evaporates. And if you want a cheap sketchpad only, the Free tier's 2 projects and Draw at $5/mo already cover that — the $100/mo Code tier is only worth it if you actually want Solarch writing the codebase.
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Real-world workflow fit
Concrete scenarios for the personas Solarch actually fits — and what changes day-one when you adopt it.
Starts on Free with 2 projects, sketches a REST API on the canvas, hits ERR_002 when wiring a Controller to a Table, and lets the agent insert a Service and Repository instead.
Outcome: A validated graph and a clear layering decision made before any code exists, upgraded to Draw at $5/mo once a third project appears.
Installs the VS Code extension, signs in with the same identity files the CLI uses, and lets it scan TypeScript on save to build an As-Is graph against the cloud To-Be graph.
Outcome: Drift findings — a table in the architecture missing from code, a service in code missing from the architecture, and a QUERIES violation — appear as native Problems-panel diagnostics with severity levels.
Installs @solarch/cli, runs drift guard in the pipeline, and blocks merges whose graphs fail rule validation while the same engine runs in-process inside the editor.
Outcome: The drift CI blocks on is byte-for-byte the drift developers see in VS Code, so architecture violations stop at the pull request.
Use Cases
- Draw a microservices backend as controllers, services and repositories on one canvas with validated edges.
- Generate a NestJS skeleton from the architecture, then let the surgical AI fill controller and service bodies.
- Run CLI drift guard in CI to block merges that break the architecture.
- Pull an As-Is graph from existing TypeScript and see drift findings in the VS Code Problems panel.
- Turn a database schema into an API contract and a typed client so a column change breaks the frontend at compile time.
- Use Agent Instruct to generate a validated architecture from a natural language prompt, then export code.
- Connect Solarch as an MCP server so Claude or Cursor gets real architecture context and rule-checked writes.
- Export the architecture as a Mermaid diagram or vector memory for documentation and AI agents.
Limitations
- Solarch is architecture-first and backend-centric, with codegen and drift tooling oriented to NestJS and Cursor/Claude-ready export.
- Producing correct graphs requires fluency in the schema vocabulary — 21 node types across 8 families and 16 typed edges — and in the canonical patterns the GraphRAG library grounds plans in, because default-deny rejects every connection that is not whitelisted.
- The VS Code extension needs your generated @solarch:surgical markers to stay in place; if they are removed, the tree warns that implementation tracking has gone blind.
- The extension keeps the last 30 revisions per workspace and polls the cloud graph on a 60-second cache, so it is not a real-time collaborative surface.
as of 2026-10-03
Verification history
We have re-verified Solarch 9 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-checked, vendor evidence unchanged
- — re-checked, vendor evidence unchanged
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 9 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Solarch tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/forever
Ideal for
A solo backend developer evaluating whether a validated node-edge canvas fits how they design, with no credit card required.
What this tier adds
Free entry point: 2 projects, the AI architect and the live node/edge canvas with default-deny rules validation.
Draw
$5/mo
Ideal for
A developer who sketches several systems at once and wants unlimited canvases but not code generation.
What this tier adds
Adds unlimited projects and access to the full 22 node types and 16 edges over the 2-project Free tier.
Build
$20/mo
Ideal for
A backend developer who wants Solarch to produce the NestJS skeleton and ZIP it out, finishing function bodies themselves.
What this tier adds
Adds extended AI usage plus code generation and ZIP export on top of Draw.
Team
$30/seat
Ideal for
Small engineering teams that need shared architecture projects rather than one canvas per developer.
What this tier adds
Adds shared projects, single-home nodes and ghost references across the organization, priced per seat.
Code
$100/mo
Ideal for
A team that wants Solarch writing the whole codebase rather than exporting a skeleton to finish by hand.
What this tier adds
Adds full codebase generation, maximum AI usage and discounted limit extensions over Build.
Enterprise
Contact us
Ideal for
Organizations with security review requirements that need to run Solarch inside their own infrastructure.
What this tier adds
Adds self-host, SSO, audit logs, a custom rules matrix and dedicated support.
Where the pricing makes sense
The company stage and team size where Solarch's pricing actually pencils out — and where peers do it cheaper.
Solarch's ladder is unusually wide: Free for 2 projects, Draw at $5/mo for unlimited sketching, Build at $20/mo for code generation and ZIP export, Code at $100/mo for full codebase writing, and Team at $30/seat for shared projects. The $5/mo Draw tier undercuts almost every design tool for what is really a validation and canvas product. The $100/mo Code tier is priced like a serious engineering tool, which makes sense only for teams that want Solarch authoring the codebase rather than a human
Setup time & first value
How long it actually takes to get something useful out of Solarch — broken out by persona, not the marketing-page minute.
A solo developer can be drawing validated nodes within minutes on the Free tier, with no credit card needed — the canvas is the product and the Rules Engine gives feedback immediately. The real effort is schema fluency: learning 21 node types across 8 families and 16 typed edges before graphs stop getting rejected. Teams wiring VS Code and CI should budget a session to install the extension, sign
Switching to or from Solarch
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From a hand-drawn diagram (Figma, Excalidraw, draw.io): redraw on the node-edge canvas and let the Rules Engine reject the layering mistakes the sketch never caught.
- →From a code-first NestJS repo: import or scan the existing TypeScript to build an As-Is graph, then diff it against the intended To-Be graph.
- →From an LLM prompt-to-code workflow: move architecture definition into Solarch so the graph is validated before the AI fills function bodies.
- →From Mermaid-only architecture docs: use Mermaid diagram export to keep existing documentation while the source graph lives in Solarch.
- ↗To Nx or Prisma: if you need a broader ecosystem and are not attached to a default-deny rules engine, export the API contract and rebuild the layering conventions natively.
- ↗To Mermaid and Markdown docs: export the architecture as a Mermaid diagram and carry the design into a documentation tool.
- ↗To Cursor or Claude alone: use the Vector Export to hand agents AI-readable architecture memory, then work without the canvas.
- ↗To code-first development: stop regenerating from the graph and let the scanned As-Is code become the source of truth.
Integrations
Resources & Guides
Tutorials & Learning
YouTube returned 6 videos for “Solarch”, and we withheld 6: 6 could not be judged, because “Solarch” is a single word that other videos use for other things. We are showing none, because we could not prove any of them are about Solarch.
Official links
Tools that pair well with Solarch
Common stack mates teams adopt alongside Solarch, with the specific reason each pairing earns its keep.
Draftbit
Draftbit builds native iOS, Android, and web apps with AI agents plus exportable source code
Playcode
Playcode AI app builder turns a plain-English brief into a hosted app with a real backend and database
MarsX
Open-source dev platform that combines no-code, full-code, and AI with reusable full-stack MicroApps.
Featured Head-to-Head Comparisons
Solarch vs Spider Cloud
Solarch and Spider Cloud serve entirely different needs. Solarch is for disciplined backend teams that want architecture-first coding with drift detection. Spider Cloud is for AI developers needing fast, cheap web data scraping. Choose Solarch if you build NestJS apps; choose Spider Cloud for RAG pipelines or agent-based web data extraction.
Solarch vs Temporal Ai
Choose Solarch if you are a backend architect enforcing strict NestJS boundaries with diagram-to-code consistency; it catches architectural drift before code is written. Choose Temporal AI if you need bulletproof workflow durability for AI agents or microservices—it auto-recovers from crashes and now offers serverless workers. They solve different problems: design-time validation vs. runtime resilience.
Solarch vs Voyage Ai
Solarch is the better choice if you're a backend developer needing architecture validation and code generation for NestJS. Voyage AI wins if you're building a RAG pipeline requiring high-accuracy domain-specific embeddings. They solve completely different problems; choose based on whether your bottleneck is backend architecture or retrieval quality.
Cognition Ai vs Solarch
If you're a disciplined backend team that wants to draw architectural boundaries and generate validated code from a diagram, Solarch is your tool — it enforces correctness before you write a line. If you're an enterprise engineering team needing an autonomous agent that plans, codes, tests, and ships complex multi-step tasks across Windows, Android, and legacy systems, Cognition AI's Devin is built for you. They serve different phases of development: architecture design vs. autonomous execution.
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