create_p2p_chat

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so the description carries the full burden. It mentions 'create or get' implying idempotency, but does not disclose permissions, side effects, or whether the operation is read-only or destructive. For a chat creation tool, more behavioral context is expected.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise, with one sentence that is front-loaded. However, it may be overly terse; a bit more detail on usage or behavior would improve it without hurting conciseness.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simplicity (1 param, no output schema, no annotations), the description is minimal but lacks sufficient context for an AI agent. It does not explain the 'create or get' logic, how to handle duplicates, or when to use this over sibling tools. More information is needed for effective selection and invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The only parameter 'user_id' is already well-documented in the input schema ('Target user ID from search_contacts'). The description adds no additional meaning or context about the parameter beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it creates or gets a P2P direct message chat and returns a numeric chat_id. This is specific and distinguishes from general chat tools, though it does not explicitly differentiate from siblings like 'list_chats' or 'send_to_user'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives (e.g., 'send_to_user' for sending messages, 'list_chats' for viewing chats). No prerequisites or exclusions mentioned. The description merely states the function.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.