what_was_i_thinking

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

No annotations are provided, so the description carries full burden. It labels the tool a 'time-travel snapshot' but does not disclose whether it is read-only, what data it returns, or any side effects. This lack of behavioral context is a significant gap.

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, consisting of two brief sentences. It front-loads the core concept and immediately provides the required format, with no wasted words.

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 a single parameter and an existing output schema, the description sufficiently explains input but omits what the output looks like (e.g., text, structured data) and whether the tool is read-only or has constraints. It meets minimum viability but leaves gaps.

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 input schema only defines 'month' as a string with no format. The description adds critical format guidance ('YYYY-MM') and an example, which meaningfully compensates for the schema's lack of description coverage.

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 the tool retrieves a snapshot of past thoughts for a given month. It uses a specific verb ('time-travel snapshot') and resource ('what was on your mind'). However, it does not explicitly differentiate from similar sibling tools like 'conversations_by_date' or 'what_do_i_think', which could cause confusion.

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?

The description specifies the required date format (YYYY-MM) but provides no guidance on when to use this tool versus its siblings (e.g., search or conversation retrieval tools). There is no mention of when not to use it or prerequisites.

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