getJunctionInfo

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

The verb 'Get' implies a read-only operation, and 'all available routes' clarifies the scope, but with no annotations the description carries the full burden. It does not disclose return format, rate limits, permissions, or whether any filtering exists, leaving some behavioral ambiguity.

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?

The description is a single concise sentence with no unnecessary words. It front-loads the action ('Get') and resource ('junction/route information') immediately, making it highly scannable.

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, no-output-schema tool, the description adequately conveys its purpose and scope. It lacks explicit details about the return payload structure, but the simple read-only nature and 'all available routes' scope make it sufficiently complete for selection and invocation.

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 has zero parameters, so the description adds no parameter-specific meaning. Per the baseline for zero-param tools, a score of 4 is appropriate since no schema coverage is needed.

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 uses a specific verb ('Get') and resource ('junction/route information'), and scopes it to 'all available routes'. This clearly distinguishes it from the sibling tool 'getRoutes' by focusing on junction/route info rather than routes themselves.

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?

No guidance is provided on when to use this tool versus alternatives like 'getRoutes' or 'getVOD'. There are no exclusions, prerequisite mentions, or contextual triggers, leaving the agent to infer usage solely from the tool name and sibling list.

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