# 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: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.contextual.io/documentation-and-resources/components-and-data/agents/scale-and-performance/flow-execution.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

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.