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Documentation Index

Fetch the complete documentation index at: https://docs.rockxy.io/llms.txt

Use this file to discover all available pages before exploring further.

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Modify Headers

Modify Headers is the right tool when the body is fine but the metadata is not.

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Good use cases

  • inject or replace an authorization header,
  • remove a caching header,
  • override a custom routing header,
  • test client behavior with changed content type,
  • strip a header that causes a backend to branch differently.

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Why use a dedicated header rule

Header changes are easier to reason about when they are explicit and isolated. If you only need to change headers, a header rule is usually safer than a breakpoint or a broader rewrite.

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Request versus response headers

Use request header changes when the upstream server should receive different metadata. Use response header changes when the client should observe a different behavior, such as cache control, content type, or a testing flag.

Breakpoints

Use breakpoints when you need to change the body or URL as well.

Network Conditions

Combine header changes with latency testing when you are debugging client resilience.