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

Annotations already provide readOnlyHint, idempotentHint, destructiveHint. The description adds valuable behavioral context: 'Free local tool', 'ordered by decayed relevance', and detailed SAP MCP execution guidance about pricing, routing, and signer boundary. No contradictions.

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 two paragraphs; the first is concise, but the second repeats 'no x402 charge' and includes execution guidance that could be more tightly integrated. It could be shortened without losing key information.

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 recall tool with good annotations and an output schema, the description covers purpose, ordering, cost hints, and execution guidance. It is slightly redundant but generally 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 coverage is 100% with clear parameter descriptions. The description adds minimal extra meaning beyond stating 'category' and 'top N memories', which aligns with the schema defaults.

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 returns the most relevant memories for a category, ordered by decayed relevance. This verb+resource combination is specific and distinguishes it from sibling tools like sap_memory_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?

The description suggests using this for prompt injection to get top N memories, and mentions 'Free local tool' and 'No x402 charge' for cost guidance, but lacks explicit comparison to alternative memory tools.

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