ecb_licence_info

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

No annotations exist, so the description carries the full burden; it does signal that this is a read-only metadata lookup rather than a data query, which is useful. It says nothing about whether the call is cached, whether it requires no auth, or what form the policy text takes, leaving behavioral traits thin for a no-annotation 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?

A single front-loaded sentence with the resource stated first and a qualifier ('ESCB statistics') that scopes it. No filler or redundancy to trim.

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 parameters and no annotations, this is a simple static-metadata endpoint, and the description covers what it retrieves (reuse policy plus attribution metadata). The absence of an output schema means it could say more about the shape of the returned policy/attribution content, but for a tool this simple it is nearly sufficient.

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, so there is no parameter semantics to explain and the baseline of 4 applies. The description adds no misleading parameter expectations either.

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 ('Return') and a specific resource ('European Central Bank (ESCB) statistics reuse policy and attribution metadata'), which is enough to distinguish it from data-returning siblings like ecb_fx_rates. It does not explicitly contrast with the many other *_licence_info siblings, but the 'ECB/ESCB' qualifier makes the scope unambiguous.

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 explicit when-to-use or when-not-to-use guidance, and no mention of when this must be consulted relative to using ECB statistics. The usage is only implied by the word 'policy' and 'attribution metadata' — an agent can infer this answers licensing/compliance questions, but must supply that context itself.

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