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

Description discloses the payment requirement and the non-mutating nature of 'Reads'. No annotations exist, so the description carries the full burden and handles it well, though it does not mention side effects or return behavior explicitly.

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?

One sentence, no redundancy, and all essential information is presented efficiently.

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?

Sufficient for a simple read operation, but lacks details about the return value or error conditions. Since no output schema is provided, some information about what the tool returns would improve completeness, though it is not strictly required for 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 single parameter 'id' is clearly implied as the identifier of the memory to read. The description adds context ('encrypted memory') that helps interpret the parameter, even though no detailed format or constraints are given.

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?

Clearly states the action ('Reads'), the resource ('encrypted memory'), and the required parameter ('id'). Distinct from sibling tools like 'store_persistent_memory' or 'extend_memory'.

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?

Implies usage for retrieving a memory by ID, but does not explicitly contrast with sibling tools or state when to prefer this over alternatives. The payment requirement is mentioned but not elaborated.

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