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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds useful content scope by naming what is returned (input/output schemas plus the signing rule), which goes modestly beyond the annotation. It still says nothing about format, size, or whether the signatures are pre-existing versus generated on demand.

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 resource front-loaded and no filler. The trailing 'Build them in any language' clause is mildly tangential for a getter but is short enough not to hurt readability.

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 an output schema present and zero parameters, the description need not explain return values, and it correctly identifies the payload contents. However, it omits any indication of when the agent should call it, which is a real gap for a tool sitting among roughly 40 action-oriented siblings.

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 the baseline is 4. There are no parameters for the description to clarify or for the schema to under-document.

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 resource: the MCP tool input/output JSON schemas a member agent builds, plus the signing rule. This is clear and distinguishable from all siblings, none of which deal with tool signatures. It stops short of a perfect 5 only because the phrasing ('a member agent builds') is slightly indirect about whose signatures these are.

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 when-to-use, when-not-to-use, or alternative guidance. 'Build them in any language' hints at implementation but does not tell the agent when this tool is appropriate versus siblings like get_protocol or get_faq.

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