Single tool 'toolmux.remote-auth-refresh' has a well-structured input schema with proper types and descriptions, but the tool description is minimal (67 chars, below the 194-char baseline). Parameter descriptions are present and clear (e.g., 'Name of a single toolbox to refresh'), meeting the pattern:tool-description requirement. However, the tool description itself lacks context on WHEN to use it, WHAT it returns, or error recovery guidance. No output schema is documented. The tool performs a WRITE operation (credential refresh) but the description does not explicitly state this is a state-modifying action, violating pattern:command-tool. No error handling guidance is provided.

• Expand tool description to 150-250 chars: 'Refresh stored authentication credentials for one or more remote MCP servers. Call this when credentials expire or after updating secrets in your credential store. Returns success/failure status per toolbox and optionally probes connectivity. Requires valid toolbox names.'
• Document the output schema explicitly: e.g., {type: 'object', properties: {results: {type: 'array', items: {type: 'object', properties: {toolbox: {type: 'string'}, status: {enum: ['success', 'failed']}, error: {type: 'string'}}}}}}
• Add to description: 'This is a state-modifying operation. Refreshing credentials may temporarily interrupt active connections to remote servers.'
• Add error guidance: 'If a toolbox name is invalid, the tool returns an error listing available toolboxes. If credential refresh fails, check that credentials are stored correctly in your keyring.'
• Clarify 'probe' parameter: 'Whether to probe the remote server after refreshing credentials to verify connectivity (default: true). Set to false to skip probing if the server is temporarily unavailable.'