{"version":"2.1.318","anchor":"image-attachment-experiment-tengu-twin-heron-evaluated-on-re","canonical_anchor":"image-attachment-experiment-tengu-twin-heron-evaluated-on-re","heading":"An experiment checks requests that include images","tier":"soon","area":"Images","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.318\/e\/image-attachment-experiment-tengu-twin-heron-evaluated-on-re","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.318","markdown":"### An experiment checks requests that include images\n\nClaude Code now checks a remote experiment switch when sending some requests that include images; it is off unless switched on remotely\n\n**Unclear.** It is not known what the experiment changes about image requests when it is on.\n\n**What**\n\nWhen Claude Code sends a request that includes an image without a content fingerprint, and no other options are set, it now checks an experiment switch and records the result. The switch is off unless it is turned on remotely. When it was read, the flag server returned off for this site's account and for an anonymous account. It has not been read under this release yet.\n\n**Why**\n\nThis is an experiment tied to image uploads that is built in but not yet visible.\n\n- Flag `tengu_twin_heron`: Off in both readings (read for one account on one subscription tier against v2.1.318; this account: off, anonymous baseline: off, compiled default: off) These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.\n- Area: Images\n- Tier: Nothing to try yet\n- Useful: 1\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no\n- Present in the build but not switched on"}