HTTP headers can be excluded from appearing in diagram notes. There are two levels:

1. Default exclusions — PlantUmlCreator.DefaultExcludedHeaders always excludes Cache-Control and Pragma.
2. Custom exclusions — Set ExcludedHeaders on ReportConfigurationOptions or DiagramsFetcherOptions to exclude additional headers:

new ReportConfigurationOptions
{
    ExcludedHeaders = ["Authorization", "X-Request-Id", "X-Correlation-Id"]
}

Both sets are combined when generating diagrams.

• To redact token values from request/response bodies (not just headers), see Filtering and Redacting Diagram Content — I Want to Hide Sensitive Data.
• To truncate large response bodies that make diagrams too wide, see Filtering and Redacting Diagram Content — My Diagrams Are Too Wide.
• For the full formatting pipeline (pre/mid/post processors), see Content Formatting.
• For all configuration properties, see Report Configuration.