Save Place

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

There are no annotations, so the description carries the burden. It discloses that the address and coordinates are 'validated,' which is useful, and 'Create or update' signals an upsert behavior. Still, it does not explain what happens when a name already exists, whether an existing place is overwritten, or any authorization requirements, leaving some behavioral ambiguity.

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, focused sentence that front-loads the key verb and resource. Every word contributes meaning, and it is not padded with redundant 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 simple upsert tool with a well-structured input schema, the description covers the core action and validation aspect. However, with no annotations and no output schema, it does not describe return values, error conditions, or duplicate-name behavior, which would help an agent handle edge cases after invoking the tool.

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 50%, and the nested location object already documents address, latitude, and longitude with descriptions. The description adds the concept of validation but provides little beyond the schema for the name parameter or the relationship between the parameters. It adds some value but does not fully compensate for the coverage gap.

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 ('Create or update') and resource ('named saved place'), and it differentiates from sibling tools like get_saved_places, list_saved_places, and remove_saved_place, which are clearly read or delete operations. An agent can immediately distinguish this as the write/upsert tool for saved places.

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 implies the tool is used when a user wants to create or update a saved place, and the sibling set clarifies it is not for listing, retrieving, or removing places. However, it does not explicitly state when to use create versus update, nor does it mention any preconditions such as needing to first search for a location with search_locations.

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