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

No annotations are provided, so the description carries the full burden. It does disclose useful behavior: a required credential ('key'), a fee model (AI provider's cost plus 20%, added to your account), and an authority source (Rule 4.8, PD2). That is real value, but it omits side effects, whether the fee is charged on invocation or success, and any irreversibility.

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 description is short and contains no filler, but it is not front-loaded: it leads with an awkward first-person framing instead of the tool's action, and the credential/cost/source sentences read as appended metadata rather than a coherent structure.

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 an 8-parameter tool with no annotations, no output schema, and zero schema description coverage, the description is thin. It explains cost and credentials but leaves the agent unable to determine what most parameters mean or what the call returns, which is more than an invocation-risk detail – it is core missing information.

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% across 8 parameters, so the description must compensate and largely does not. It mentions the draft types (claim, defence, reply, appeal, advice) that map to the 'task' enum, but says nothing about file, kind, rank, model, handle, matterId, or instructions – leaving seven parameters undocumented anywhere.

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 does state the resource (counsel) and activity (private advice or drafting a claim, defence, reply or appeal), so the function is inferable. However, it opens in the first person ('I want help assessing...') rather than describing the tool, and it never actually uses the verb 'hire' or distinguishes itself from the many sibling tools such as list_counsel, appear, or plead. Adequate but muddled.

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 gives a timing hint – 'You can use it before starting a case or during one' – which is genuine usage guidance. But it names no alternatives and gives no when-not-to-use conditions, and the sibling list contains several tools (list_counsel, appear, file_claim) an agent could confuse with this one.

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