{"version":"2.1.299","anchor":"bridgejobbg-session-id-patterns-dropped","canonical_anchor":"bridgejobbg-session-id-patterns-dropped","heading":"Fewer ID shapes recognised as agent and workflow IDs","tier":"internal","area":"Subagents","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.299\/e\/bridgejobbg-session-id-patterns-dropped","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.299","markdown":"### Fewer ID shapes recognised as agent and workflow IDs\n\nIDs starting wf- followed by a number, bridge-, job- and bg- are no longer on Claude Code's list of recognised ID shapes\n\n**Unclear.** What the list of recognised IDs is used for, and so what changes for these IDs, is not known.\n\n**What**\n\nClaude Code keeps a list of ID shapes it recognises. Four were removed: IDs beginning `wf-` followed by a number, `bridge-`, `job-` and `bg-`. Only the agent ID shape and the `wf_` workflow run ID shape remain.\n\n**Why**\n\nIDs of the removed shapes may no longer be treated like agent IDs, which could change how they are shown or filtered.\n\n- Area: Subagents\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 1\/5\n- Scope: individual\n- Heads-up: no"}