Config

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

Annotations declare destructiveHint=true and readOnlyHint=false for the whole tool, but the description never says which actions mutate versus read, nor what setup_reset or cache_clear actually destroy. The only behavioral detail added is that relay_* names are honored as deprecated aliases. Given a blanket destructive annotation over mixed read/write actions, this leaves a meaningful gap.

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?

Purpose is front-loaded, and the dense parenthetical/pipe notation packs the action list into minimal space. Some of the grouping syntax is harder to parse than plain prose, but nothing is padding.

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?

An output schema exists, so return values need not be explained, and the sibling routing is covered. Still, for a merged tool spanning ~11 actions, the absence of per-action behavior and of key/value semantics leaves an agent guessing about several invocations.

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?

Schema description coverage is 0%, so the description must carry the load. It usefully enumerates the valid action strings (which the schema leaves as an unconstrained string), but never mentions 'key' or 'value' or which action consumes them, leaving two of three parameters undocumented anywhere.

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 scope ('Server config + credential setup') and enumerates the exact action values, so an agent knows the tool is a multi-action config router. It also explicitly distinguishes itself from the sibling config__open_relay. It stops short of 5 because the individual actions are listed but never explained, so the purpose of each branch is opaque.

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?

It groups actions into (setup) and (runtime) and explicitly routes the credential-form task to config__open_relay, which is real guidance. However, it gives no when-to-use guidance for choosing between setup_status, status, set, or cache_clear, and no prerequisites are stated.

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