{"version":"2.1.39","anchor":"sdk-client-app-identification","canonical_anchor":"sdk-client-app-identification","heading":"SDK Client App Identification","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.39\/e\/sdk-client-app-identification","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.39","markdown":"### SDK Client App Identification\n\nThe SDK now supports a `CLAUDE_AGENT_SDK_CLIENT_APP` environment variable, allowing client applications built on the SDK to identify themselves in API requests.\n\n**Evidence**\n\nNew client-app identifier support (search for `\"client-app\/\"`, `\"CLAUDE_AGENT_SDK_CLIENT_APP\"`)"}