Which orders are urgent?
NEXQL
WHICH Order has (Order Priority:'1-URGENT')Filter naturally
Name the object. Add a condition. That is a complete query.
HUMAN READABLE. AGENT READY.
The query language
for AI agents.
From a question to a query.
With meaning intact.
NexQL brings natural-language readability to deterministic database queries. Give your agents the language of your domain. Let FactEngine translate it to SQL or Cypher.
Readable intentFormal grammarSQL + Cypher
QUESTION → NEXQL01 / SEE THE LANGUAGE
YOU ASK
What films are playing at the Rialto?
NEXQL
WHICH Film is showing at (Cinema:'Rialto') on (DateTime:TODAY)WHICH selects Film. The named cinema constrains the question. No RETURN clause needed.
YOU ASK
What films did Simon book?
NEXQL
WHICH Film has A Session
THAT has A Booking
THAT is for (Person:'Simon')Follow the relationships in the model. A introduces a related object; THAT continues the reading.
YOU ASK
Show films, cinemas and times.
NEXQL
WHICH Film is showing at WHICH Cinema at WHICH DateTimePut WHICH in front of each object type you want returned.
From the NexQL query-by-example collection.Explore the examples →
REAL QUESTIONS. REAL NEXQL.It reads like the question.
It reads like the question.
Because that’s the point.
From a simple lookup to a sales analysis. See how much you can ask with a few words and the relationships in your model.
Who bought what?
NEXQL
WHICH Customer made AN Order
THAT is for WHICH Part
AND THAT Order was on (Date:'2026-09-26')Choose multiple results
Return customers and parts together. WHICH makes the selection explicit.
What films did Simon book?
NEXQL
WHICH Film has A Session
THAT has A Booking
THAT is for (Person:'Simon')Follow relationships
Follow a readable path through the model, from a film to the person who booked.
What toppings are on a Margherita?
NEXQL
WHICH PizzaTopping is for A PizzaNameHasTopping
THAT has (PizzaName:'Margherita')Ask about your domain
Use the names and relationship readings in the pizza model to ask a specific question.
How many seats are in this cinema?
NEXQL
WHICH Seat is in A Row
THAT is in (Cinema:'Great Western Cinema')
RETURN COUNT(*)Count the matches
Add RETURN when you want an aggregate instead of the default identifying fields.
What are total sales by customer city?
NEXQL
WHICH Sales Order has WHICH Sold To Customer City
AND WHICH Line Total
RETURN SalesOrder.SldToCustCity, SalesOrder.SlsLineTotal.SUM
GROUP BY SalesOrder.SldToCustCityGroup and aggregate
Keep the domain question readable while expressing exactly how totals should be grouped.
Each example uses its domain’s model vocabulary. RETURN is optional.
Explore more query examples →LESS TRANSLATION. MORE INTENT.Close to the question.
Close to the question.
Precise at execution.
An agent needs a clear way to express what it wants. A database needs a precise query. NexQL connects the two.
A shorter step from natural language
Object names and relationship readings already sound like the question. Give the AI your model vocabulary and examples to guide query generation.
Queries you can read and review
See which objects an agent selects, which relationships it follows, and which conditions it applies. Keep the question visible in the query.
Deterministic translation
NexQL has a formal grammar. FactEngine resolves the query against a model and translates it to SQL or Cypher for the target database.
A SEMANTIC STEP IN YOUR AGENT STACKLet the agent express intent.
Let the agent express intent.
Let the model supply meaning.
Keep domain concepts in the agent’s context, and database mappings in FactEngine. The model connects the names and relationships in a query to the data behind them.
Explore the agent workflow →- 01Natural-language questionThe user’s intent
- 02NexQLA structured query generated by the agent
- 03FactEngine + your modelResolve meaning and translate the query
- 04SQL / Cypher → resultsExecute against the mapped database
START WITH ONE WORDWHICH changes
WHICH changes
what comes back.
Ask for an object. Follow a relationship. Select another object. A query can return useful results without a RETURN clause.
WHICH FilmReturn the films.
WHICH Film is showing at WHICH CinemaReturn the films and the cinemas where they’re showing.
For each selected object type, NexQL returns the fields of the first-found uniqueness constraint, falling back to the primary key when no uniqueness constraint is found. Use
RETURN for explicit fields and aggregates.Your next question starts here.
Built on Object-Role Modeling and Fact-Based Modelling, NexQL asks questions using the concepts and relationships in your domain.
Meet the foundations →Give your agents
a language for data.
Start with your first query ↗Developed for FactEngine. Explore the language and help shape what comes next.