Memories by date range

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds the event_date filtering behavior and optional entity refinement, but does not disclose pagination, ordering, or missing-date behavior; the openWorldHint is not explained.

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?

Two short sentences, with the core operation front-loaded and the use case in the second sentence. The only blemish is the ambiguous 'query/entity' phrase, which could mislead.

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?

For a four-parameter tool with an output schema, the description gives the main invocation context but omits date format, inclusive/exclusive semantics, and when to prefer search_memories instead. The 'query' mention adds a small inconsistency. Overall adequate but not fully complete.

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?

Schema description coverage is 0%, so the description carries the burden. It clarifies date_from/date_to as the date-range bound and entity as a topic/person filter, but does not specify date format or limit behavior, and the phrase 'query/entity' references a 'query' that is not present in 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 states a specific action and resource: 'Fetch memories whose event_date falls in a date range.' This clearly distinguishes the tool from the bank-related siblings and suggests a different mode from search_memories by anchoring on date rather than free-text search.

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?

It gives explicit trigger conditions: 'USE when the user mentions a month, year, or period, or asks what they were working on during a timeframe.' It lacks explicit when-not-to-use guidance or named alternatives, but the context is clear enough for selection.

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