Missing MCP Server Instructions Processing in Claude Code

Bug Description
The spec indicates that an MCP server can return instructions in the initalize response. I took this to mean instructions as in an LLM conversation instructions that would be added to the context so the use of the MCP would follow guidance provided by the MCP server. If this is not the case I suggest that the field be named "documentation" or the like so it is not confused. If my interpretation was correct then Claude Code is not processing the returned instructions.

Not sure what the error below is from.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 1.0.48
• Feedback ID: 780d4022-4802-420e-9c71-655f5e154376

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 checkExecSyncError (node:child_process:890:11)\n    at execSync (node:child_process:962:15)\n    at $D (file:///Users/michaellatta2/.nvm/versions/node/v18.20.8/lib/node_modules/@anthropic-ai/claude-code/cli.js:704:4293)\n    at file:///Users/michaellatta2/.nvm/versions/node/v18.20.8/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:9350\n    at Q (file:///Users/michaellatta2/.nvm/versions/node/v18.20.8/lib/node_modules/@anthropic-ai/claude-code/cli.js:526:14406)\n    at dC (file:///Users/michaellatta2/.nvm/versions/node/v18.20.8/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:8496)\n    at mC (file:///Users/michaellatta2/.nvm/versions/node/v18.20.8/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:7361)\n    at wB (file:///Users/michaellatta2/.nvm/versions/node/v18.20.8/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:11970)\n    at spA (file:///Users/michaellatta2/.nvm/versions/node/v18.20.8/lib/node_modules/@anthropic-ai/claude-code/cli.js:623:12128)","timestamp":"2025-07-10T23:13:57.132Z"}]