Formats

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

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. <Card title="OpenCollection YAML" icon="file-lines" href="/opencollection-yaml/overview"

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

Convert collections from Postman, Insomnia, OpenAPI, and WSDL into Bruno format. The original plain-text markup language behind .bru files — syntax, tag reference, and samples.