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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is covered. The description adds genuinely new behavior beyond that: bindings are cleared, existing publication snapshots retain their original content, and it never publishes — non-obvious consequences of a destructive call.

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?

Four short sentences, front-loaded with the action and followed by constraints and side effects. No filler, though the opening 'when managing post auto-signatures' clause carries little information.

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 described, and the description covers the important post-conditions (bindings cleared, snapshots unaffected, no publish). Missing only auth/permission expectations and how to source the signatureId.

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% for the single required signatureId parameter, and the description never mentions it — not its format, nor how to obtain a valid id (e.g., from list_signatures). With low coverage, the description is expected to compensate and does not.

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 ('Delete an owner-bound auto-signature') and adds scope ('owner-bound', 'clear its bindings'), so an agent can distinguish it from create_signature, update_signature, and get_signature. It stops short of naming those siblings explicitly, which keeps it from a 5.

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?

'Use this when managing post auto-signatures' is close to tautological and gives no when-not conditions or alternatives. The real guidance is implicit: only owner-bound auto-signatures can be deleted, and deletion never triggers a publish. That is usable but indirect.

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