P2KB MCP has solid naming conventions with clear verb-noun patterns (p2kb_get, p2kb_find, p2kb_obex_get, etc.). Descriptions are present and contextually detailed, ranging from 150-400 characters. All tools have properly structured JSON Schema input definitions with type declarations and parameter descriptions. However, there are significant gaps in output schema documentation, the code defines tools but does not show what fields are returned, making it impossible for LLMs to plan downstream chaining or extract specific data. Error handling and recovery guidance are not visible in the source code provided. Parameter descriptions are generally adequate but lack concrete constraints (min/max for limit, enum values for category). The tools are focused and single-purpose, which is good, but critical operational details like pagination behavior, rate limits, and retry semantics are missing from the source.

• Document the output schema for every tool. For p2kb_get, return a schema showing what fields are present: e.g., { 'type': 'object', 'properties': { 'content': {...}, 'related_items': [...], 'suggestions': [...] } }. This lets LLMs plan chaining and data extraction.
• Add minimum and maximum bounds to numeric parameters. E.g., for 'limit', add 'minimum': 1, 'maximum': 100 in the JSON Schema. This prevents LLMs from passing unreasonable values.
• Enumerate valid categories for p2kb_find and p2kb_obex_find. Instead of mentioning examples ('pasm2_math', 'spin2_pin'), use an 'enum' constraint: 'enum': ['pasm2_math', 'spin2_pin', ...]. This eliminates ambiguity and lets LLMs auto-complete.
• Explicitly document pagination behavior. For p2kb_find and p2kb_obex_find, state in the description: 'Supports pagination via limit and offset parameters. Returns a total_count field for result planning.' Include offset/cursor parameter definitions in the schema.
• Add tool annotations to the JSON Schema. For read-only tools, include a 'readOnlyHint': true extension property. For destructive tools like p2kb_obex_download and p2kb_refresh, include 'destructiveHint': true. This signals to LLMs which calls are safe to retry.
• Enhance p2kb_version's description to explain its utility: 'Diagnostic tool. Call this before other tools to verify the Knowledge Base index is current and responsive. Returns server version, build timestamp, index status, and cache metrics. Useful for troubleshooting stale results.'
• Document error cases for ambiguous queries (p2kb_get, p2kb_obex_get). Explain: 'If query is ambiguous and returns multiple suggestions, the LLM should ask the user which one is intended, or try a more specific query.' Include an example of a suggested recovery interaction.