{"name":"FLY_MACHINE_ID","slug":"fly-machine-id","family":"env","title":"Environment variables","noun":"environment variable","description":"Any non-empty value makes Claude Code's deployment environment detection report `fly.io` (unless an earlier check such as `CODESPACES` or `DYNO` matched first); `FLY_APP_NAME` does the same. The detected environment is reported in telemetry as `deployment_environment`.","description_source":"code","described_by":{"bundle":"2.1.286","author":"claude-opus-5-5"},"presence":{"first_seen":"2.1.138","removed_in":null,"in_current_build":true,"newest_mined":"2.1.308","builds":149,"mined_builds":149,"first_cited":null},"aliases":[],"entries":[],"entries_total":0,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"FLY_APP_NAME","slug":"fly-app-name","description":"Any non-empty value makes Claude Code's deployment environment detection report `fly.io` (unless an earlier check such as `CODESPACES` or `DYNO` matched first); `FLY_MACHINE_ID` does the same. The detected environment is reported in telemetry as `deployment_environment`."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/fly-machine-id","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}