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

Annotations already declare destructiveHint=true, readOnlyHint=false, idempotentHint=false and openWorldHint=true, so the safety profile is covered. The description adds non-annotation context: every call mutates state for the current user and calls must be issued one at a time. It does not state which of the listed operations are irreversible or what authorization is required, leaving some behavioral detail implicit.

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?

Front-loaded with the scope and exclusion rule, then grouped sub-tools by category with a one-line effect for each — no filler. Slightly long, but a router that must enumerate 7 dispatched tools earns that length; the 'One per call' fragment is a touch terse.

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 3-parameter dispatch router with a nested arguments object and no output schema, the description covers routing rules, the exclusion against the read router, and the full catalog of target tools, and it points to get_tool_schema for per-tool detail. Error/response behavior is unspecified, but no output schema exists to conflict with that omission.

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 100%, so baseline is 3, but for a router the description adds real value: it gives the concrete invocation form monitoring_write(action="execute", tool_name="…", arguments={...}) and clarifies that tool_name is the exact name of the changing tool. This is slightly more than the schema fields state individually.

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 exactly what the tool is: the write router for the 7 Monitoring and reporting tools that create, update, pause or remove something. It enumerates all 7 sub-tools by name and effect, so an agent understands both the router role and the concrete capabilities without opening any schema. It also explicitly differentiates itself from the sibling read router 'monitoring'.

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 draws a hard line: 'Reading, listing or checking anything is not here — that is monitoring, and calling this router to look something up is always wrong.' It names the alternative router and points to monitoring(action="get_tool_schema") for schema lookups. This is explicit when/when-not guidance with the correct sibling named.

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