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The specifications and formats Bruno collections are built on, and the tools for bringing collections in from other API clients.

OpenAPI

Import OpenAPI 2.0/3.x specs as collections, export collections as specs, design OAS files, and keep collections in sync with a remote spec.

OpenCollection YAML

The recommended YAML-based open specification for new collections — structure reference and samples.

Converters

Convert collections from Postman, Insomnia, OpenAPI, and WSDL into Bruno format.

Bru Lang

The original plain-text markup language behind .bru files — syntax, tag reference, and samples.