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

readOnlyHint=true already tells the agent this is a safe, non-mutating read, so the description's main added value is disclosing what comes back (title, address, phone, email, timezone, booking flag, service ids). It does not mention pagination behavior, the archived-exclusion default, or ordering, which are relevant to a list operation.

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?

Two compact fragments that front-load the resource and then the payload fields, with the endpoint as a trailing anchor. No filler, though the field list is dense and slightly run-on.

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 parameterless-required, fully schema-documented list tool with readOnlyHint and no output schema, the description covers resource, returned fields and endpoint, which is enough to call it correctly. A brief note on paging/archived defaults would make it 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 description coverage is 100%, so all six parameters (id_gt/id_lt paging, title filter, update_gt/update_lt, include_archived) are already documented in the schema. The description adds no syntax or semantics beyond that, so the baseline 3 applies.

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 names the resource (practice locations) and enumerates the fields it exposes, and the endpoint line (GET /locations) confirms a read of the collection. Combined with the name splose_list_locations, an agent can distinguish it from the singular splose_get_location. It stops short of an explicit 'list all' scope statement, so a 4 rather than 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?

Usage is only implied: the plural resource plus GET endpoint suggests 'use this to enumerate locations', and the presence of splose_get_location in the sibling set implies this is the bulk alternative. There is no explicit when-to-use/when-not or statement that filtering/pagination is handled by the id_gt/id_lt/update_gt parameters.

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