{"version":"2.1.228","anchor":"bundled-sdk-ships-a-runtime-for-server-managed-agent-work","canonical_anchor":"bundled-sdk-ships-a-runtime-for-server-managed-agent-work","heading":"Bundled SDK ships a runtime for server-managed agent work","tier":"soon","area":"SDK","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.228\/e\/bundled-sdk-ships-a-runtime-for-server-managed-agent-work","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.228","markdown":"### Bundled SDK ships a runtime for server-managed agent work\n\nThe bundled SDK carries a worker that polls a server for agent work, unreachable from normal CLI use.\n\n**What**\n\nThe bundled Anthropic SDK gained a full worker runtime that polls a server for agent work and runs it locally. It is present in every install but only runs under managed-agents flows, which nothing in normal CLI use enters.\n\n**Details**\n\n- Polls, acknowledges, heartbeats and stops against `\/v1\/environments\/{id}\/work`, every request sending the header `anthropic-beta: managed-agents-2026-04-01`\n- A session runner streams session events, executes tool calls, honours allow\/deny confirmations from the user, and ends the turn after an idle status\n- Ships a default toolset of `bash`, `read`, `write`, `edit`, `glob`, `grep`, all confined to a working directory with checks that reject paths escaping it\n- None of these runtime pieces existed in 2.1.227\n\n**Evidence**\n\n`Cannot iterate over a consumed SessionToolRunner`\n\n- Area: SDK\n- Tier: Nothing to try yet\n- Useful: 2\/5\n- Signal: 5\/5\n- Present in the build but not switched on"}