ExperimentalOptional_The _meta property is reserved by ACP to allow clients and agents to attach additional metadata to their interactions. Implementations MUST NOT make assumptions about values at these keys.
See protocol docs: Extensibility
OptionallabelHuman-readable label for this variable, displayed in client UI.
The environment variable name (e.g. "OPENAI_API_KEY").
OptionaloptionalWhether this variable is optional.
Defaults to false.
OptionalsecretWhether this value is a secret (e.g. API key, token). Clients should use a password-style input for secret vars.
Defaults to true.
UNSTABLE
This capability is not part of the spec yet, and may be removed or changed at any point.
Describes a single environment variable for an [
AuthMethodEnvVar] authentication method.