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

With empty annotations the description carries the full burden. It usefully discloses that the URL receives a PUT call with a JSON object whenever an event fires, which is real behavioral context. However, it never says whether this overwrites an existing webhook, what permissions are needed, or how failures surface.

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?

The opening sentence is duplicated verbatim, wasting space, and the JSDoc-style @param/@return block is functional but not front-loaded for an agent. Content is otherwise tight with no filler.

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 mutation tool with no annotations and no output schema, the description covers purpose, parameter sources, and the return type adequately. It stops short of stating overwrite semantics, auth failure behavior, or error conditions, leaving real gaps.

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 coverage is 0%, so the description must compensate and largely does: every one of the four parameters gets a meaning, and three include provenance ('provided by /access/login'). This meaningfully exceeds the bare schema, though it omits format expectations like the integer nature of wallet_fk.

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: 'Sets a webhook on this wallet.' This clearly distinguishes it from the sibling webhook_view, webhook_pause, and webhook_resume tools. The repeat of the first sentence is redundant but doesn't harm clarity.

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?

No guidance on when to use this tool versus webhook_pause/resume/view, no prerequisites, and no stated conditions or exclusions. The agent must infer that 'set' means create/configure a webhook from the name alone.

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