# API reference

Look up an API independently of the tutorials. Each public class,
function and constant has its own entry; methods and properties also
have individual lookup pages with their source documentation.

**Find a name:** [Alphabetical API dictionary](all) (including class
members and aliases), [import modules](modules), or the site search.

**Browse by purpose:** choose a category and implementation below.

| Category | Contents |
| --- | --- |
| [Core utilities](core) | Units, parameter containers, runtime settings and numerical helpers |
| [Spherical models](spherical) | Stellar profiles, dark-matter halos, anisotropy and Jeans solvers |
| [Axisymmetric models](axisymmetric-models) | Flattened components, projection, Jeans solvers and J/D factors |
| [Statistical inference](inference) | Observations, priors, likelihoods, MCMC and storage |

See also the [units and shape contract](../guides/contracts.md) and
[Quickstart](../quickstart.ipynb). [Browse by import module](modules).

```{toctree}
:hidden:
:maxdepth: 2

core
spherical
axisymmetric-models
inference
all
modules
```