get_ukpn_grid_overview

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

With no annotations, the description carries the full burden. It discloses the API key requirement and the composite read nature, but it does not explain response format, pagination, error behavior, or default data scope when no spatial filter is provided. This is a significant gap for a data-aggregation tool.

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 sentences front-load the core purpose, enumerate key data components, and mention spatial filtering and authentication. Every sentence is informative with no redundancy.

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?

The description conveys what data is combined but does not describe the output structure, use cases, or potential limitations. Given the moderate complexity and absence of an output schema, a bit more context about the returned data would be helpful but is not critically missing.

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 coverage is 100% with each parameter described, so the description does not need to repeat parameter details. The description only mentions spatial filtering, which adds no new meaning over the schema's lat/lon/radius descriptions. Baseline 3 is appropriate.

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 the tool provides a UKPN composite grid overview combining GSP capacity, HV flexibility zones, and live network faults. This specific verb-resource pairing distinguishes it from sibling grid tools like get_distribution_headroom or get_gb_grid_demand.

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?

The description implies spatial filtering use case and notes the API key requirement, but it does not explicitly state when to use this tool over alternatives or mention scenarios where it should not be used. This is adequate context but lacks exclusionary guidance.

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