Build once, use everywhere

34 ways to use one semantic model

A semantic model is built once and then used everywhere. Once SemanticTwin.ai has turned your documents and code into a trusted model of your system, the same model can power AI agents, software development, documentation, analysis, reporting and compliance.

One semantic model at the centre, used in seven areas. Choose an area to go to it.
Top five

Five use cases, under a minute each

Each short video shows something SemanticTwin.ai already does. The link under it goes to the use case it explains.

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The example

One process, followed through every area

The examples use the BAI procurement system, where buyers request building materials, sellers quote, and an accepted quote becomes a purchase order. Watch the same three steps serve a different team in each area.

  1. Material request

    Buyers request building materials.

  2. Seller quote

    Sellers quote on the request.

  3. Purchase order

    An accepted quote becomes a purchase order.

What an AI assistant sees

Without a model

Is prch_ordr a purchase order? How does it connect to the other tables?

TableWhat it holds
prch_ordrUnknown
prch_ordr_offersUnknown
mvt_prch_ordrUnknown
Without a semantic model, an AI assistant looking at a database sees prch_ordr and guesses.

With a model

prch_ordr holds material requests. Sellers quote on them, and an accepted quote becomes a purchase order.

TableWhat it holds
prch_ordrMaterial request
prch_ordr_offersSeller quote
mvt_prch_ordrPurchase order
With one, it knows it is looking at material requests, and how they connect to quotes and orders.
Built in

SemanticTwin already does this.

Enabled

Teams build it on top of the model. SemanticTwin provides the foundation: the meaning, connections, rules and proof that make it work.

Area 1 of 7 · Context for AI

AI and agents

AI is only as good as the context it gets. Without a semantic model, an AI assistant looking at a database sees prch_ordr and guesses. With one, it knows it is looking at material requests, and how they connect to quotes and orders.

Assistants connect through the MCP server and get the meaning of every table and the right way to join them. Read-only queries are checked against the model’s rules.

Connect AI assistants through MCP

MCP (Model Context Protocol) is the standard way to plug AI assistants into business systems. Through an MCP server, an assistant gets the meaning of every table and the right way to join them.

In SemanticTwin today

Built in An MCP server for published models. Teams can also build their own MCP tools that pair the model with their APIs.

Watch the video : AI that knows your business, 44 seconds

Plain-English questions about your data

“Which material requests became purchase orders last month?” The model gives the correct path through the tables, so the answer is right the first time.

In SemanticTwin today

Built in Ask in the Playground, and read-only queries checked against the model’s rules.

Assistants that don’t make things up

Answers come only from the model and its proof, and show where each fact came from.

In SemanticTwin today

Built in Ask.

Measure AI readiness

Score how ready a model is for AI agents, with a list of gaps to fix first.

In SemanticTwin today

Built in Through the API.

AI agents that act safely

An agent helping a seller needs to know that a submitted quote can’t be edited. The model’s rules and life stages tell it what it may and may not do.

In SemanticTwin today

Enabled Teams build it on top of the model.

Area 2 of 7 · A blueprint to build from

Software development

AI coding agents write code quickly, but they need to know what they are building. The semantic model gives them the blueprint: the business things, their details, the rules and the life stages.

Before you remove a business thing or make a link optional, the what-if check shows which findings and rules are affected.

Spec-to-code pipelines

Automated pipelines turn specifications into working software, and check their output against the model.

In SemanticTwin today

Built in An export format designed for spec-to-code pipelines.

Onboarding developers

New developers learn the system from the model, instead of piecing it together from the code.

In SemanticTwin today

Built in The Semantic Playground.

Agentic software development

AI coding agents build new features using the model as their blueprint, so database tables, APIs and screens use the same names and rules everywhere.

In SemanticTwin today

Enabled Teams build it on top of the model.

Modernising a legacy system

Before moving an old system to a new platform, the team knows what every table and field means and which rules must survive the move.

In SemanticTwin today

Enabled Teams build it on top of the model.

Connecting systems

Two systems call the same thing by different names. The model maps one to the other.

In SemanticTwin today

Enabled Teams build it on top of the model.

Designing tests from rules

Each rule becomes a test. “A submitted quote can’t be edited” becomes a test that tries to edit one.

In SemanticTwin today

Enabled Teams build it on top of the model.

Area 3 of 7 · Documents tied to the facts

Knowledge and documentation

Most system documentation is out of date the day it is finished. Documentation generated from the model stays tied to the facts and their sources.

Twelve documents come from the model, including a data dictionary, an ER diagram, process flows and a business rules catalogue.

An enterprise knowledge graph

The business things, their connections and their proof form a graph you can explore, extend and share with other tools.

In SemanticTwin today

Built in The Knowledge Graph view, plus exports in the standard formats Turtle, JSON-LD, RDF/XML and N-Triples.

One shared business language

Sales, finance and IT use the same words for the same things, from one business glossary.

In SemanticTwin today

Built in The business glossary.

Finding where things live

“Where do we store a seller’s short name?” Search the model instead of asking around.

In SemanticTwin today

Built in Search in the Playground.

Onboarding new staff

New analysts, testers and support staff learn how the business works through the model.

In SemanticTwin today

Built in The Semantic Playground.

Every use case in this area is built in.

Area 4 of 7 · The answer up front

System analysis

Analysts spend much of their time working out what a system does before they can improve it. The model gives them the answer up front.

Where the requirements say one thing and the database another, SemanticTwin flags the conflict, and a validation report lists the gaps.

Understanding an unfamiliar system

An analyst inherits a system and explores it visually: the business things, what each one means, and where it is stored.

In SemanticTwin today

Built in The Semantic Playground.

Finding gaps between documents and reality

Spot where the requirements say one thing and the database does another, or where a documented field doesn’t exist.

In SemanticTwin today

Built in Conflicts between sources are flagged, and a validation report lists the gaps.

Process analysis

See how work flows and the stages each thing moves through, such as a request’s nine stages from new to closed.

In SemanticTwin today

Built in Process flow and lifecycle diagrams.

Due diligence after an acquisition

Understand what an acquired company’s system does before deciding to keep, merge or replace it.

In SemanticTwin today

Enabled Teams build it on top of the model.

Rationalising overlapping systems

Find where several systems store the same business things, to plan consolidation.

In SemanticTwin today

Enabled Teams build it on top of the model.

Area 5 of 7 · One definition for every number

Data and analytics

Reports disagree when two teams define the same number differently. A semantic model gives everyone one definition to work from.

“Orders dispatched this month” is defined once, so every report means the same thing. Every fact links to the document and sentence it came from.

A data dictionary

Every field, with its meaning, its type, and whether it is required.

In SemanticTwin today

Built in The data dictionary.

Consistent metrics

“Orders dispatched this month” means the same thing in every report.

In SemanticTwin today

Built in The model can carry ready-made metric definitions.

Tracing facts to their source

For any fact in the model, see the document and the sentence it came from.

In SemanticTwin today

Built in The traceability matrix.

Self-service reporting

Business users build reports with business names, such as “material request”, instead of table names.

In SemanticTwin today

Enabled Teams build it on top of the model.

Data quality checks

Required fields, allowed values and uniqueness become automatic checks. For example, a request’s status must be one of nine known codes.

In SemanticTwin today

Enabled Teams build it on top of the model.

Area 6 of 7 · Answers with proof

Governance, risk and compliance

Regulators ask where personal data lives and who changed what. With a semantic model, those answers are already written down, with proof.

Fields that hold personal data go into the PII register, and every change to the model records who made it, when and why.

Knowing where personal data lives

For privacy laws such as GDPR, list every field that holds personal information.

In SemanticTwin today

Built in Personal-data detection and the PII register.

Designing access control

Decide which roles may see which data, starting from the model’s list of sensitive fields.

In SemanticTwin today

Enabled Teams build it on top of the model.

Responding to regulatory change

When a rule changes, find every business thing, field and process it touches.

In SemanticTwin today

Enabled Teams build it on top of the model.

Area 7 of 7 · Knowledge that stays

Business and people

The biggest benefit is often the simplest: knowledge that used to live in a few people’s heads now belongs to the whole organisation.

Business owners and IT review and approve the same model before it is published.

Handing a system to a partner

Give an outsourcing partner or a new vendor a precise, sourced description of the system on day one.

In SemanticTwin today

Built in Generated documents and model exports.

Aligning business and IT

Business owners and IT review and approve the same model, so what gets built matches what was asked for.

In SemanticTwin today

Built in Review and approval before publishing.

Every use case in this area is built in.

One rule, every team

Define a rule once. Every team works from the same version.

A rule lives in the model with its source. Here is one rule from the procurement example, and four use cases that rely on it.

The ruleA submitted quote can’t be edited.

  • AI and agents

    An agent helping a seller needs to know that a submitted quote can’t be edited. The model’s rules tell it.

    Enabled AI agents that act safely

  • Software development

    The rule becomes a test that tries to edit a submitted quote.

    Enabled Designing tests from rules

  • Knowledge and documentation

    The rule is listed in the business rules catalogue, one of the twelve generated documents.

    Built in Documentation that writes itself

  • Governance, risk and compliance

    Every change to the rule records who made it, when and why, and the rule shows its source.

    Built in Audit readiness

Spotlight

AI assistants and MCP

MCP (Model Context Protocol) is the standard way to plug AI assistants into business systems. SemanticTwin includes an MCP server for published models, so an assistant gets the meaning of every table and the right way to join them.

Teams can also build their own MCP tools that pair the model with their APIs.

  1. Your systemsDatabases, APIs and documents
  2. SemanticTwinThe semantic model and its MCP server
  3. AI assistantsGet the meaning of every table and how to join them
In short

Key takeaways

  • One semantic model supports 34 uses, across AI, software development, documentation, analysis, data, compliance and the business itself.

  • 23 of them are built into SemanticTwin.ai today, including an MCP server for AI assistants, plain-English questions, the Semantic Playground, twelve generated documents and a register of personal data.

  • The other 11 are enabled: teams build them on top of the model, because it already holds the meaning, connections, rules and proof they need.

  • AI agents are the headline. Through MCP, an assistant can understand your system instead of guessing, and agents built on the model can act within its rules.

  • Build the model once with SemanticTwin.ai, then use it everywhere.

See your system clearly.

Watch SemanticTwin.ai build a semantic model from real documents.

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