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

Annotations already declare non-read-only, destructive and idempotent, so the safety profile is covered. The description adds genuine behavioral context beyond that: the tenant-scoping rule with its concrete failure mode (404) and the patch-style merge semantics ("only fields you provide are changed"). It stops short of saying what makes this destructive or whether the update is reversible.

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 short, front-loaded sentences: what it does, the hard precondition, then the merge behavior. No filler and no restatement of the name or annotations.

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 annotations cover the safety and idempotency profile. For a nested, tenant-scoped mutation the description supplies the critical constraint and merge rule; the only gap is the lack of guidance on error recovery or when this tool is the right choice versus sibling update tools.

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?

Top-level schema coverage is 0% — neither the body wrapper nor pathParams carry a description — so the description must carry weight. It does clarify the id constraint and that omitted organization fields are preserved, but the nested field descriptions in the schema already repeat the merge semantics, and the description adds nothing about the body/pathParams structure itself.

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 ("Update organization settings") that an agent can distinguish from the read-side siblings like get-organization and list-organizations. It does not explicitly name those siblings, but the mutation framing is unambiguous.

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?

Provides a real precondition — the URL id must match the API key's organization or the call returns 404 — which is essential usage guidance for a tenant-scoped tool. However, it never states when to prefer this over update-custom-template/update-template or what to do if the org mismatch error occurs, so alternatives 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.