render_nearby_digest

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

The description adds the specific behavioral guarantee 'never writes files or sends webhooks', which goes beyond the readOnlyHint and destructiveHint annotations by naming concrete side-effect-free operations. This provides extra context without contradicting annotations.

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 a single, front-loaded sentence that states the purpose and a key safety property. It is appropriately concise and every part earns its place, though it sacrifices detail for brevity.

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?

Despite having an output schema, the description is too sparse for a tool with 10 parameters and a non-trivial concept like 'nearby digest'. It lacks context on what a digest contains, how it relates to sibling search tools, or any usage prerequisites, leaving the agent under-informed.

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 schema covers about 60% of parameters with descriptions, but the tool description itself adds no parameter information. For a tool with 10 parameters, the description's silence on meaning, defaults, or interdependencies leaves a notable gap that the schema only partially fills.

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 uses a specific verb 'Render' and a clear resource 'local nearby digest', which conveys a distinct purpose from siblings like 'search_nearby_experiences'. However, 'digest' remains somewhat ambiguous and doesn't explicitly differentiate from the search tool, so it doesn't earn a 5.

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 such as search_nearby_experiences or get_experience. It only states what the tool does, not the context or exclusion criteria, so it offers minimal usage direction.

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