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

Annotations declare readOnlyHint=true, and the description reinforces this consistently by stating 'requests aren't fulfilled' and 'no payment is requested or accepted.' It adds valuable context beyond the annotations by disclosing what the tool returns (service definition, what it logs, how to submit). No contradiction with annotations.

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?

Three sentences with no filler. The usage condition is front-loaded, followed by behavioral expectations and the return value. Each sentence earns its place, though it could arguably be tightened.

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?

For a zero-parameter, read-only tool with annotations covering safety, the description covers purpose, usage expectations, and return value. The sibling tools (check_request_status, submit_capability_request) provide surrounding workflow context. Nothing an agent needs to invoke 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 has zero parameters, so the baseline is 4. The description compensates appropriately by explaining what the agent receives — the service's nature, what it logs, and submission instructions — which is the relevant semantic context for a parameterless tool.

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 states a specific purpose: describe capability needs that aren't currently offered. 'Beacon' is abstract, but the description defines it well as a mechanism for surfacing unmet needs. It implicitly differentiates from siblings — this is the 'describe' step versus submit_capability_request and check_request_status — though the differentiation is implied rather than explicit.

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 gives a clear when-to-use condition: 'if you... needed a capability and couldn't find a service that provides it.' It also sets expectations that requests aren't fulfilled and no payment is involved. However, it never names the sibling alternatives or states when NOT to use this tool versus submit_capability_request or check_request_status, leaving the routing decision to inference.

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