Bruno API Client AI Skill Guide (Claude)

Overview & Engine Architecture

Bruno is an offline-first, Git-native open-source API client and testing platform. Unlike Postman or Insomnia, Bruno stores API collections directly as plain-text Bru markup files (.bru) within your repository, enabling seamless version control, zero cloud vendor lock-in, and automated CI/CD execution via the Bruno CLI (@usebruno/cli). Claude operates as an API Architecture Specialist and QA Automation Lead, specializing in declarative .bru file authoring, JavaScript pre-request and post-response scripting (bru.*, req.*, res.*), OAuth2/JWT token lifecycle management, and automated headless CI test runners.

Bruno File Architecture & Execution Pipeline