Breaking changes requiring user action
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You set mcp.enabled: true, ran atmos mcp start, and got: failed to initialize AI components: tools are disabled. MCP was on. Why did anything else need to be "enabled" for a command whose
entire job is exposing tools?
Reading !terraform.state and !terraform.output can fail to resolve for a dozen
different reasons — the backend hasn't been applied yet, your credentials aren't
configured, you don't have access to the bucket, or the state you're reading just isn't
the latest. Any one of those, on any one component, used to abort the entire
list/describe command — every other stack you did want to see disappeared behind one
unrelated failure.
The list and describe commands now degrade gracefully by default: an unresolved value
is shown as (computed) instead of aborting the command, with a one-line summary telling
you how many values were affected.
Atmos now supports credential realm isolation, preventing collisions when engineers work with multiple customer repositories using identical identity names.
Atmos helmfile commands now use the identity system for AWS authentication and provide more flexible EKS cluster name configuration.
Starting with Atmos v1.202.0, empty or omitted base_path values in atmos.yaml now trigger git root discovery instead of defaulting to the current directory. Users with multiple Atmos projects in a single repository, or where the Atmos project root differs from the git root, must explicitly set base_path: ".".
atmos auth logout now preserves keychain credentials by default for faster re-authentication. Only session data is cleared. Use --keychain to permanently delete credentials.
Atmos now follows CLI tool conventions on macOS, using ~/.config, ~/.cache, and ~/.local/share instead of ~/Library/Application Support. This ensures seamless integration with Geodesic and consistency with other DevOps tools.
We've identified and corrected a regression in Atmos where the pager was incorrectly enabled by default, contrary to the intended behavior documented in a previous release.
