{"version":"2.1.248","anchor":"vendored-anthropic-client-updated-with-server-side-compactio","canonical_anchor":"vendored-anthropic-client-updated-with-server-side-compactio","heading":"Vendored Anthropic client updated with server-side compaction and new resources","tier":"internal","area":"Compaction","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.248\/e\/vendored-anthropic-client-updated-with-server-side-compactio","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.248","markdown":"### Vendored Anthropic client updated with server-side compaction and new resources\n\nThe bundled API library gains server-side compaction blocks plus sessions, vaults, skills and MCP tunnel surfaces.\n\n**What**\n\nThe bundled API client adds a compaction content block and streaming compaction deltas, deprecating its own client-side compaction control in favour of the server doing it, and gains sessions and threads, vaults and credentials, skills and versions, and MCP tunnels and certificates, each behind its own beta header. This is library surface inside the bundle; none of it is a Claude Code feature on its own.\n\n**Details**\n\n- Message creation now warns when `thinking.type=enabled` is combined with the newer models.\n\n**Evidence**\n\n`edits: [{ type: \"compact_20260112\" }]`\n\n- Area: Compaction\n- Tier: Under the hood\n- Useful: 3\/5\n- Signal: 5\/5"}