Edit and validate YAML files in a cloud workspace.
Start coding free →YAML (YAML Ain't Markup Language) is a data serialization format built for readability. It uses indentation to define structure and key-value pairs to store data, making it a common choice for configuration files, build scripts, and tools like Ansible, Docker, and Kubernetes. RunCode workspaces include YAML tooling for Python, Ruby, and other languages, ready in under a minute.
Open a YAML workspace →YAML documents consist of key-value pairs separated by colons, with indentation defining nested structure. Lists are marked with a leading dash. It is often used instead of XML or JSON when human readability matters, and it is the native config format for Kubernetes manifests, GitHub Actions workflows, Ansible playbooks, and Docker Compose files.
RunCode workspaces include yamllint for validating YAML files in the terminal. For parsing and processing, Python's pyyaml library is preinstalled: load a file with yaml.safe_load and you get a Python dictionary to work with. Ruby and Java workspaces include their own YAML libraries as well.