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

readOnlyHint=true already establishes the safe-read profile, so the description's contribution is the field enumeration and the GET /services endpoint. It omits pagination behavior, the archived-exclusion default, and whether the catalogue is truncated, which are behavioral facts an agent would want for an unpaginated-looking list call.

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 with no filler, and the resource scope is front-loaded before the endpoint detail. The terseness borders on under-specification, which keeps it off a 5.

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?

With no output schema, enumerating returned fields is genuinely useful. But for a 9-parameter list endpoint the description never covers filtering, cursor paging, or include_archived semantics, leaving the agent to rely entirely on the schema.

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 code, name, type, tag, date and id cursor parameters are already documented. The description adds no filtering or paging semantics beyond listing fields, so this sits at the baseline.

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 noun phrase 'The service catalogue: ...' plus 'GET /services.' makes the resource and retrieval nature inferable, but no explicit verb is given and nothing distinguishes it from the sibling splose_get_service. An agent must infer this is a bulk listing rather than a single-record fetch.

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?

There is no when-to-use direction at all: no statement that this returns many services, no mention of using filters to narrow, and no routing to splose_get_service for a single record. Usage is only implied by the word 'catalogue'.

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