> For the complete documentation index, see [llms.txt](https://docs.contextual.io/documentation-and-resources/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.contextual.io/documentation-and-resources/components-and-data/agents/scale-and-performance/flow-execution.md).

# Flow execution

Agents are responsible for executing your Contextual Flows. They provide compute to 'publish' a Flow and make it operational and externally accessible.

For HTTP Agents, the creation of an Agent also creates the base HTTP URL on which that agent will respond. This is visible on the definition tab of the Agent once created. HTTP Flows that are put live by HTTP Agents may have multiple different endpoints responding on this base URL.

<figure><img src="/files/Of6BuPgAU436ezu95ff0" alt=""><figcaption><p>Agent Definition Tab with Agent URL</p></figcaption></figure>

For Event Agents, the Agent will execute when it receives a message or event via a [Trigger](/documentation-and-resources/components-and-data/object-types/object-type-details/triggers.md), [Action](/documentation-and-resources/components-and-data/object-types/object-type-details/actions.md) or Send to Agent node in another flow.


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# Agent Instructions
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## Querying This Documentation
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```

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