list_traffic_plans

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

Annotations already declare readOnlyHint and openWorldHint, and the description adds a genuinely useful behavioral fact not present in structured data: 'No token required.' It still says nothing about pagination or result ordering, but the auth disclosure is real added value on top of the annotations.

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 short sentences, resource and scope front-loaded, endpoint cited compactly, no filler. Nothing could be cut without losing 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 two-parameter read-only list tool with no output schema, the definition is workable but silent on what a traffic plan contains (fields, units, whether multiple plans are typically returned). With no output schema to fall back on, a brief note on the result shape would have made 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 both parameters (location with its country-code list, instance_id as a preset ID) are fully documented in the schema. The description only restates that the plans are 'for a preset in a location', adding no syntax or format detail. 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?

Names a specific resource (traffic plans) with two scoping dimensions (preset, location) and even cites the underlying endpoint. It is distinguishable from the similar-sounding s3_list_plans (object-storage plans), though it never names that sibling explicitly.

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 statement of when to use this versus alternatives, nor any prerequisite ordering (e.g. 'call list_presets first to obtain instance_id'). The only implied guidance is the parenthetical endpoint reference.

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