{"version":"2.1.221","anchor":"tool-search-no-longer-disabled-on-vertex-ai","canonical_anchor":"tool-search-no-longer-disabled-on-vertex-ai","heading":"Tool search no longer disabled on Vertex AI","tier":"notice","area":"Tool Use","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.221\/e\/tool-search-no-longer-disabled-on-vertex-ai","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.221","markdown":"### Tool search no longer disabled on Vertex AI\n\nTool search now runs on Vertex AI instead of being refused outright.\n\n**What**\n\nOptimistic tool search now runs on Vertex instead of being refused up front.\n\n**Details**\n\n- The block that logged that Vertex \"does not accept the tool-search beta header\" and told you to set `ENABLE_TOOL_SEARCH=true` has been deleted.\n- The only remaining bail-out is for non-first-party `ANTHROPIC_BASE_URL` hosts.\n- `ENABLE_TOOL_SEARCH` still overrides the mode.\n\n**Evidence**\n\n`ENABLE_TOOL_SEARCH`\n\n- Area: Tool Use\n- Names: `ENABLE_TOOL_SEARCH`, `ANTHROPIC_BASE_URL`\n- Tier: You'll notice\n- Useful: 4\/5\n- Signal: 0\/5"}