> For the complete documentation index, see [llms.txt](https://docs.spara.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spara.com/agents/capabilities.md).

# Capabilities

A **capability** is one channel an [Agents](/agents/agents.md) engages buyers through. Spara offers five:

* [Chat](/agents/capabilities/chat.md): website chat that qualifies visitors, surfaces content, and books meetings in real time.
* [Email](/agents/capabilities/email.md): automated reply handling and outreach cadences.
* [Phone](/agents/capabilities/phone.md): incoming and outgoing AI phone calls.
* [SMS](/agents/capabilities/sms.md): text-message conversations.
* [Product Demo](/agents/capabilities/product-demo.md): a live, voice-narrated product walkthrough with synchronized visuals.

An Agent can have several capabilities (even several of the same channel), each activated by its own trigger. Together they let one Agent meet a buyer wherever they are.

<figure><img src="/files/yIu9GPQkTsg3tzy35xln" alt=""><figcaption><p>A capability's Overview tab summarizes what makes it up.</p></figcaption></figure>

## How capabilities are built

However different the channels look to a buyer, every capability is configured and run the same way: the same editor, the same draft-and-publish lifecycle, the same testing and optimization tools. Those shared building blocks are covered under [Configuring Capabilities](/agents/capabilities/configuring.md):

* [AI Instructions](/agents/capabilities/configuring/ai-instructions.md): the prompt that defines how a capability behaves.
* [Abilities](/agents/capabilities/configuring/abilities.md): tools it can use mid-conversation.
* [Testing](/agents/capabilities/configuring/testing.md): validate a draft before going live.
* [Ask Spara AI](/agents/capabilities/configuring/ask-spara-ai.md): analyze and rewrite instructions.
* [Saving & Publishing](/agents/capabilities/configuring/saving-and-publishing.md): drafts and the single live version.
* [A/B Testing](/agents/capabilities/configuring/a-b-testing.md): split traffic across variants to optimize conversion.

## Starting criteria

Every capability has a **trigger** that determines when it activates: a Chat capability might appear only on certain pages, a Phone capability answers a specific phone number, an Email capability replies from a connected inbox. Triggers are also how Spara groups capabilities for [A/B Testing](/agents/capabilities/configuring/a-b-testing.md): variants that share a trigger split its traffic.


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# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.