> ## Documentation Index
> Fetch the complete documentation index at: https://docs.truemath.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# TrueMath documentation

> TrueMath is a deterministic math execution engine for AI-native workflows. LLMs reason; TrueMath executes — with full provenance and version-locked business logic.

TrueMath is the deterministic execution layer for math in AI workflows. A language
model is good at understanding a request; TrueMath performs the calculation —
deterministically, at full precision, with complete provenance against version-locked
business logic. You work with it today through the [Playground](/playground/tour) and
the [API](/api/overview).

<CardGroup cols={2}>
  <Card title="What is TrueMath" icon="circle-info" href="/introduction/what-is-truemath">
    Understand the execution layer and where it sits in the AI stack.
  </Card>

  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Run your first calculation in the Playground and through the API.
  </Card>

  <Card title="Core concepts" icon="diagram-project" href="/concepts/domains">
    Domains, activities, variables, provenance, and scenarios.
  </Card>

  <Card title="API reference" icon="code" href="/api/overview">
    Authenticate, run calculations, and read domains over HTTP.
  </Card>
</CardGroup>