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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds genuine behavioral context beyond that: prices originate from the same figures as the website, and services lacking a published starting price are returned without one, which sets expectations about null price fields.

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 with the core resource and payload front-loaded, followed by the price-provenance caveat. No filler, no restatement of the title, and the null-price handling is stated exactly once.

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?

With no input parameters and no output schema, the description carries the burden of describing the return shape, and it does so reasonably: services, jurisdictions, and starting prices, including the null-price case. It could go slightly further by indicating whether jurisdictions are attached per service or returned as a separate collection, but nothing essential to invoking it correctly is 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?

The tool takes zero parameters and the schema is an empty object at 100% coverage, so there is nothing for the description to disambiguate. The baseline for a parameterless tool applies; the description adds no filtering or scope semantics because none exist.

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 and resource (list Cosec services) plus the payload contents (jurisdictions, published starting prices), so the agent can predict the return set. It does not distinguish the tool from the sibling estimate_eor_cost, which is a cost-computation tool an agent might reasonably confuse with price listing.

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?

Usage is only implied: a reader infers this is the browse/catalog tool while estimate_eor_cost is the calculation tool. There is no explicit when-to-use or when-not-to-use statement and no named alternative, so the routing decision is left to inference.

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