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

# Runtime functions and extensions

> Find the function family that provides a Script capability

Script discovers functions from loaded assemblies. The exact catalog depends on the Neuron build and installed packages, but functions are organized into stable capability families.

## Core families

| Family               | Examples of capability                             |
| -------------------- | -------------------------------------------------- |
| Analytic             | powers, logarithms, trigonometry, calculus helpers |
| Scalar and complex   | conversions, rounding, complex components          |
| Strings              | split, replace, trim, parse, evaluate              |
| Date and time        | components, UTC conversion, durations              |
| Vectors and matrices | aggregates, transpose, inverse, determinant        |
| Runtime              | type creation, reflection, variables, flow helpers |
| Logging              | structured event creation                          |

## Module families

| Assembly family             | Capability                                                     |
| --------------------------- | -------------------------------------------------------------- |
| `Waher.Script.Persistence`  | object SQL, indexes, persistence functions, SPARQL integration |
| `Waher.Script.Data.*`       | external SQL, MySQL, PostgreSQL                                |
| `Waher.Script.Content`      | encode, decode, and negotiate Internet content                 |
| `Waher.Script.Cryptography` | hashes, keys, signatures, encryption helpers                   |
| `Waher.Script.Xml*`         | XML, XPath-like selection, XML signatures                      |
| `Waher.Script.Networking`   | DNS and network operations                                     |
| `Waher.Script.Graphs*`      | charts, plots, 3D graphs                                       |
| `Waher.Script.Statistics`   | distributions and statistical functions                        |
| `Waher.Script.System`       | operating-system integration                                   |
| `Waher.Script.Threading`    | parallel and synchronization helpers                           |
| `Waher.Content.*`           | Markdown, semantic, XSL, images and document rendering         |
| `Waher.Things.*`            | sensor, actuator and concentrator objects                      |

## Neuron-specific functions

The IoT Broker package adds functions for:

* XMPP messaging, presence, roster lookup, ping, and IQ requests;
* contract creation, proposal, rejection, and obsoletion;
* token state, history, profiling, attachments, and actions;
* email messages, embedded resources, and attachments;
* country/locale and configured local services;
* runtime counters and administrative reporting.

Additional payment, KYC, Microsoft interoperability, SMS, OpenAI, and provider functions appear only when their packages are installed.

## Discover at runtime

Use reflection helpers such as `Functions`, `Methods`, `Properties`, `Fields`, and `Names` where available in the current context. For shared production code, declare the package dependency instead of dynamically guessing whether a function exists.

<Note>
  Function availability is an API surface. Package authors should document names, arguments, return shapes, side effects, privileges, and version changes.
</Note>