# Header and Query-based matching

IMESH API Gateway allows users to create header-matching rules to match requests to destinations based on the contents of the headers. Note that while configuring the matcher on a route, you may want to specify one or more header matches to require headers with matching values to be present on the request.

{% embed url="<https://youtu.be/60TouxeESFg>" %}


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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.imesh.ai/routes/header-and-query-based-matching.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.