"Permissions Configuration Not Disabling Prompts for Figma MCP"

Bug Description
I am trying to disable permissions checks when using a particular MCP (a figma one). I install the MCP with a name i.e. 'figmastrand', and then add an entry to my ~/.claude/settings.json permissions > allow > "mcp__figmastrand". According to this doc it should mean that I no longer get prompted for that MCP server's commands - but it doesn't work, I still get prompted. https://docs.anthropic.com/en/docs/claude-code/settings

Environment Info

• Platform: macos
• Terminal: kitty
• Version: 1.0.16
• Feedback ID: 107138ae-89d3-449b-a764-e1413aaba793

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:internal/errors:983:15)\n    at wrappedFn (node:internal/errors:537:14)\n    at checkExecSyncError (node:child_process:882:11)\n    at execSync (node:child_process:954:15)\n    at WZ (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:654:3921)\n    at file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:11794\n    at Q (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:17190)\n    at pJ (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:10940)\n    at iP (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:10021)\n    at n6 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:582:14133)","timestamp":"2025-06-06T01:56:20.226Z"}]