vcast provides 6 tools with basic schemas and descriptions, but falls short of production quality. All tools have descriptions (10-50 chars, below the 50-200 char baseline for LLM optimization) and input schemas with typed parameters. However, descriptions lack actionable context, they state WHAT but not WHEN or WHY. No output schemas are documented. Error handling is absent from tool definitions. Parameter descriptions are minimal (e.g., 'The source ID' for id param in updateAudio). No enums constrain values. Tools lack idempotency guidance and recovery hints. Naming is clear (verb_noun pattern) but generic descriptions undermine discoverability.

• Expand tool descriptions to 50-200 chars. Example: 'List all streaming sources currently configured. Returns source IDs, URLs, and status. Call this first to discover available sources before updating or removing them.'
• Document output schemas for each tool. Example for listSources: 'Returns {sources: [{id: string, url: string, status: "active"|"inactive"}]}'.
• Add range/format constraints to numeric parameters. Example: 'Volume level (0-100, where 0 is muted and 100 is maximum)'.
• Add error recovery hints to tool descriptions. Example for addSource: 'If the URL is invalid, the tool returns an error. Verify the URL is a valid HLS/RTMP stream before retrying.'
• Declare idempotency and retry safety. Example for updateAudio: 'This operation is idempotent, calling it multiple times with the same parameters produces the same result.'