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

With no annotations provided, the description carries the full transparency burden. It discloses that the tool maps signatures and provides assessment, implying a read-only evaluation behavior. However, it does not explicitly state that it is non-mutating, mention authentication or rate limits, or describe any failure or edge-case behavior.

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 concise and well-structured: two sentences that front-load the main purpose and then provide additional context on the mapping to the EU trust framework. Every word earns its place, with no redundant or vague phrasing.

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 tool has no output schema and no annotations, so the description must explain return values and usage nuances. It fails to describe what each action (status, assess, reference) actually produces or when to use them. The description provides an overview but leaves significant gaps for an agent to know how to invoke the tool correctly and what to expect.

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 already provides descriptions for all three parameters (action, entity_id, token_symbol), so the baseline is 3. The tool description adds context about eIDAS and FeedOracle, which helps interpret the 'assess' action, but it does not delve into parameter-specific usage or interactions beyond what the schema gives.

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 identifies the tool's purpose: providing eIDAS-qualified timestamp integration status and assessment. It distinguishes itself from siblings by focusing on the specific EU trust framework and FeedOracle ES256K signatures, making it unique among the listed tools. However, it lacks a direct action verb like 'retrieves' or 'assesses,' instead using a noun phrase ('status and assessment').

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 usage context is implied through the description—users needing eIDAS timestamp integration status or mapping would use this tool. But the description does not explicitly state when to use it over sibling tools like assess_entity or assess_token, nor does it provide exclusion criteria or alternative suggestions.

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