A rule engine built to handle decisions at scale.
Ship business rules to production without redeploying, refactoring, or rethinking your architecture.
1signal BlockAccount(user_id)2signal SendVerificationEmail(user_id)3rule AccountApproval {5is_adult = input.age >= 186eligible = is_adult && input.country in ["us", "ca"]7emit SendVerificationEmail(input.user_id) when eligible && !input.email_verified9emit BlockAccount(input.user_id) when !eligible10out approved = eligible && input.email_verified12}
{ user_id: 1, age: 17, country: "us", email_verified: false }Use with popular modern frameworks
An open-source rule engine
Define, automate, and deploy business logic with a rule engine you'd have built yourself, if you had the time.
Fast & Embeddable
Efficient on hot paths. Drop Nodora into any codebase without architectural changes or heavy runtime dependencies.
Declarative Rule Language
Write business logic in a declarative language built for developers and AI. Readable, composable, and easy to version-control.
Signals & Side Effects
React to rule conditions with signals that trigger side effects. Decouple your event handling from your evaluation logic.
Compiled Rules
Rulesets compile down to a JSON instruction set. Ship rule logic as data, not code. Deployable anywhere.
Open Source Engine
The core evaluation engine is fully open source. Inspect, extend, and audit every decision your application makes.
Framework Agnostic
Works alongside Next.js, Express, or any backend of your choice. Nodora augments your stack, it never dictates it.
Built for |
The Nodora language is purposefully small. Easy to read, easy to review, and concise enough that modern AI models generate production-ready rules out of the box.
Simple & predictable
A small, focused syntax anyone can pick up in minutes. No magic, no surprises. Rules behave exactly the way you read them.
AI-friendly by design
The language is concise and unambiguous, so modern AI models generate production-ready rules from a plain-English spec. Iterate on policy at the speed of prompts.
Built for hot paths
The compiled instruction set evaluates in microseconds, even with deeply nested conditions and large rule trees.
Universal by design
From fintech to content platforms, Nodora powers the decisions that matter.
Account Approvals
Automate approval workflows with rules that evaluate user attributes and context in real time.
Content Moderation
Apply layered content policies with configurable rulesets that can be updated without redeployment.
Rate Limiting
Express complex rate-limiting policies as rules evaluated inline on every request.
Compliance
Encode compliance rules as first-class logic, auditable and version-controlled alongside your code.
Risk Assessments
Score and classify risk with multi-factor rules that compose into sophisticated assessment pipelines.
Business Logic
Centralise pricing, eligibility, and routing decisions in rulesets rather than scattered application code.
Define, compile and evaluate.
Three steps between your logic and production.
Define
Write your business logic in the Nodora language. Group related rules into rulesets, assign conditions, and attach signals for side effects.
Compile
Nodora compiles your rulesets into a portable JSON instruction set. Deploy the compiled output anywhere: embed it, ship it, or manage it via our cloud platform.
Evaluate
Embed the Nodora evaluation engine into your application and evaluate rules in real time. The engine processes the compiled instructions with minimal latency, even at scale.
Nodora as a Service
Rule infrastructure, already built and ready. Author and version your rulesets in a single place, deploy updates without any code changes, and let our SDK take care of runtime delivery. All you need to bring is the logic.
Latest from the team
Guides, patterns, and deep dives on building with Nodora.
Where Business Rules Belong in the AI Era
AI coding makes tech debt cheap to create and hard to see. The fix is to separate what matters: keep business rules in a deterministic Nodora rule engine, and let Claude Code scaffold the code around them.
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