SIRI_VM_Data_feed_api_v1_datafeed

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

No annotations exist, so the description carries full burden. It states 'returns' but doesn't disclose potential side effects, rate limits, pagination, or max result limits. Only implies read-only behavior through 'Returns'.

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?

Description is concise with the main purpose front-loaded. Parameter explanations are dense but necessary. Minor redundancy in repeating 'Limit results to bus location data' for each parameter.

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?

Given the existence of an output schema, return format details are not required. However, the description lacks context on result structure (e.g., is it a list?), and doesn't explain the scope beyond 'bus location data' in parameters. Adequate but not comprehensive.

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 input schema has only a generic 'kwargs' string with no description. The description compensates fully by detailing each possible filter parameter (boundingBox, operatorRef, etc.), providing essential meaning beyond the 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?

The description clearly states 'Returns all published datafeeds' with specific verb and resource. It distinguishes from the sibling 'by_datafeedID' tool by indicating it returns all datafeeds without a specific ID filter.

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 explicit guidance on when to use this tool versus alternatives like the per-ID version or GTFS_RT feed. The parameter descriptions imply filtering but no when-to-use or when-not-to-use context.

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