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

With readOnlyHint=true already declaring the safety profile, the description adds the access-key scoping constraint and the newest-first ordering, which are genuine behavioral details not present in structured fields. It does not disclose result size, pagination behavior, or whether shared/inbound presentations are included, leaving real gaps for a list endpoint.

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?

A single short sentence with the resource front-loaded and the two useful qualifiers, scope and ordering, in parentheses. No filler, no restatement of the title.

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 zero-parameter, read-only list tool with no output schema, the essentials are covered: what is listed, whose items, and in what order. Missing only secondary details an agent might want, such as whether the result set is bounded or whether recency is by creation or modification time.

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 tool takes zero parameters, so the schema has no semantics to clarify and the description cannot add parameter meaning. Baseline 4 applies; the description correctly signals the call is parameterless by describing a bare enumeration.

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 gives a specific verb and resource ("List the presentations") plus a meaningful scope ("created with this access key") and ordering ("newest first"). It does not explicitly contrast with siblings such as get_presentation, but the singular/plural distinction makes the boundary inferable.

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: an agent can infer this is the enumeration entry point before calling get_presentation on a specific item. There is no explicit when-to-use rule, no exclusion, and no mention of alternatives for finding presentations not created with this key.

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