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

With no annotations, the description carries the full burden. It usefully discloses that the output is a shareable, self-verifiable proof requiring no trust in the caller and no secrets. It does not state whether this is a read-only lookup, whether authentication is required, or what happens if the entry isn't in the seal.

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?

Two sentences, no filler, and the defining concept (inclusion proof for one sealed-ledger entry) is front-loaded. Slightly under-specified rather than verbose, but structurally clean.

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 and no annotations mean the description should work harder. The share-and-verify semantics are covered, but the identification ambiguity (required seq versus optional id/kind/index) and any failure mode are left entirely to the schema, which leaves a gap for a 4-parameter proof-retrieval tool.

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 75% and the schema itself documents seq ('Omit is not allowed'), id, and index. The description adds nothing about how seq/id/kind/index interact or when to supply index instead of seq. With the schema doing most of the work, baseline 3 is appropriate.

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 resource is specific ('an inclusion proof for one entry in the sealed ledger'), which separates it from siblings like smithtalks_seal and smithtalks_verify. However, there is no verb at all — it reads as a description of a returned artifact rather than stating that the tool retrieves/produces that proof. An agent can guess the intent, but the purpose is stated obliquely.

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?

The second sentence gives real usage context: the proof is meant to be handed to a third party who independently recomputes it against the signed root and checks the operator's signature. That implies when you'd call it, but no alternative or prerequisite (e.g. 'call after smithtalks_seal') is named, so guidance remains implied rather than explicit.

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