This bash MCP server has critical definition quality gaps. Tool descriptions are present but generic (avg ~60 chars, below the 194-char baseline). Input schemas are visible in the source but lack proper JSON Schema structure, parameters are documented as strings with informal descriptions rather than typed schema objects. No output schemas are documented. Parameter descriptions are minimal and lack constraints (enums, ranges, formats). Error handling is absent from tool definitions. The 'account' tool combines multiple subcommands (add|list|remove|default) into one tool, violating single-responsibility. No tool annotations (readOnlyHint/destructiveHint) despite clear risk levels. Keychain token handling is secure (server-side injection), but the tool interface exposes account names as free-form strings without validation hints.

• Split 'account' tool into four separate tools: add_account, list_accounts, remove_account, set_default_account. Each should have a single, clear responsibility.
• Document output schemas for all tools. E.g., projects should return [{ref: string, name: string, ...}], branches should return [{name: string, ...}]. Include field descriptions.
• Convert informal parameter descriptions to JSON Schema with proper types, enums, and constraints. E.g., mode: {type: 'string', enum: ['ro', 'rw'], description: '...'}.
• Add tool annotations: mark read-only tools with readOnlyHint=true; mark destructive tools (link, unlink, install, account add/remove) with destructiveHint=true.
• Enhance parameter descriptions with validation rules. E.g., 'Account name: 1-64 alphanumeric characters, hyphens, underscores, and dots. Must start with a letter.'