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

Annotations already cover the safety profile (readOnlyHint=false, destructiveHint=true, idempotentHint=false, openWorldHint=true), yet the description still adds real value beyond them: it discloses that account 'job created' notifications (email/SMS/webhook, possibly to the customer) may be triggered, and that a duplicate myId silently produces no record plus an error. It stops short of noting auth/permission requirements, so 4 rather than 5.

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, front-loaded with the WRITE marker and core action, then routing guidance, then preconditions and side effects. Every sentence carries information; the trailing endpoint notation is the only near-redundant element.

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?

No output schema exists, so the description must carry the return expectations; it does tell the agent the created job is unassigned and that a duplicate myId returns an error, but does not say what identifier or body comes back. For a 15-parameter mutation with nested objects, this is nearly complete.

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 67% and nested 'exactly one of id/myId/name' semantics are already documented in the schema itself. The description restates the customer-identification forms and the required/optional split but adds no new syntax or format detail, so the baseline 3 is correct.

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 verb and resource ('create a new job for a customer') plus the resulting state ('status created, not yet scheduled'), and explicitly contrasts with the sibling synchroteam_schedule_job. An agent can distinguish it from other create_* tools without opening any schema.

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?

Names the alternative tool and the condition that selects it ('use synchroteam_schedule_job to assign a technician and time'), and gives the required/optional input split plus the myId duplicate-precondition. No exclusions are left to inference.

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