{"version":"2.1.309","anchor":"mcp-file-input-upload-gate-tengu-walnut-tiller-now-defaults","canonical_anchor":"mcp-file-input-upload-gate-tengu-walnut-tiller-now-defaults","heading":"MCP file uploads now go ahead when no server setting arrives","tier":"notice","area":"MCP","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.309\/e\/mcp-file-input-upload-gate-tengu-walnut-tiller-now-defaults","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.309","markdown":"### MCP file uploads now go ahead when no server setting arrives\n\nUploading local files to MCP tools now defaults to on when Anthropic's servers send no setting, instead of off\n\n**What**\n\nThe remote switch that controls uploading files from your computer to MCP tools now falls back to on when Anthropic's servers send no value. Before, it fell back to off. MCP servers are outside programs that give Claude extra tools.\n\nWithout a server value, uploads now go ahead for servers that qualify:\n\n- claude.ai connectors\n\n- http servers that match the stored remote-host server entry\n\nIn readings taken before this release, Anthropic's servers returned this switch on for this site's account and for a signed-out baseline.\n\n**Why**\n\nAnyone whose Claude Code gets no value from the server now gets file uploads to qualifying MCP tools anyway.\n\n- Flag `tengu_walnut_tiller`: On for this account, and not off by default (read for one account on one subscription tier against v2.1.309; this account: on, anonymous baseline: on, compiled default: on) 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: MCP\n- Tier: You'll notice\n- Useful: 3\/5\n- Signal: 2\/5\n- Scope: individual\n- Heads-up: no"}