Cortex

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions the tool 'adds or refreshes' content, implying a write operation, but doesn't specify permissions required, whether changes are reversible, or how it handles existing sections. The description is minimal and misses key behavioral traits like error handling or side effects.

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 highly concise and front-loaded, consisting of a single sentence that directly states the tool's purpose. Every word earns its place, with no redundant or vague language. It efficiently communicates the core functionality without unnecessary elaboration.

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 tool's moderate complexity (4 parameters, write operation) and the presence of an output schema, the description is minimally adequate. It covers the basic purpose but lacks details on usage context, behavioral traits, and parameter meanings. The output schema helps, but for a tool that modifies files, more guidance on effects and alternatives would improve completeness.

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 description provides no information about parameters, and the schema description coverage is 0%. However, the schema itself documents 4 parameters with defaults, and an output schema exists, which reduces the need for detailed param explanations in the description. The baseline score of 3 reflects that the schema handles parameter documentation adequately, but the description adds no value beyond this.

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's purpose with a specific verb ('sync'), resource ('top memory insights'), and target ('CLAUDE.md for the project directory'). It specifies the action of adding or refreshing a '## Memory Insights' section. However, it doesn't explicitly differentiate this tool from sibling tools like 'wiki_write' or 'record_session_end' that might also modify documentation.

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 provides no guidance on when to use this tool versus alternatives. With many sibling tools related to memory, documentation, and project management (e.g., 'wiki_write', 'record_session_end', 'backfill_memories'), there's no indication of the specific context or prerequisites for choosing 'sync_instructions'. It lacks any 'when' or 'when-not' statements.

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