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

With no annotations, the description carries the full burden and does meaningful work: it declares the audience/auth requirement, that the log is append-only, that it includes staff reads under support access, and that results are newest-first. It omits pagination/volume behavior and any detail on what a record contains, which keeps it from a 5.

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 dense sentence with zero filler. The access constraint is front-loaded and each clause (audience, log semantics, ordering, filters) earns its place.

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 read-only list tool with no annotations, no output schema, and no schema descriptions, the description covers purpose, access, ordering, and most filters. It still leaves pagination behavior and the shape/volume of returned audit entries unexplained, which matters for a log that could be large.

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 0% across five parameters, so the description must compensate. It explains what actorId, targetId, and operation filter (3 of 5), but says nothing about limit/offset semantics or defaults, leaving the pagination parameters entirely to the bare schema.

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?

States a specific verb+resource: an append-only audit log listing 'platform actions and staff reads under support access'. The scope (platform staff only, account session) is explicit, so an agent can distinguish it from siblings like platform_access_list or platform_calls_list. It stops short of naming any sibling directly, so not 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?

Gives a concrete prerequisite ('Platform staff only (account session)') and lists the three filter dimensions available. However it offers no when-to-use-vs-alternative guidance and no exclusions relative to the many other platform_* list tools, leaving selection largely to inference.

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