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

With no annotations, the description carries the full burden and does well: it discloses that the text is not stored, the write is private, a viewing key is returned, the key plus txid reveals only this proof, and the operation consumes 1 proof. It could be stronger on irreversibility or failure/insufficient-balance behavior, but the key privacy and cost traits are clearly disclosed.

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 tightly front-loaded: it first states the computation and blockchain write, then the return values, then the key-handling instruction, then the cost. Every sentence adds useful information and there is 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?

There is no output schema, so the description appropriately explains the return values: fingerprint, transaction ID, and viewing key. It also covers privacy, key usage, and proof cost; only authentication/setup or failure conditions are left unstated, which is a minor gap for this one-parameter 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?

There is only one parameter and the schema description coverage is 100%, so the schema already documents 'text' as the exact text to timestamp. The description adds only the qualifier 'short', which is minor context but not a meaningful expansion beyond the schema.

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 states a specific verb and resource: it computes a SHA-256 fingerprint of short text and writes it on the BitcoinZ blockchain. It implicitly distinguishes itself from timestamp_fingerprint by handling raw text rather than an existing fingerprint, but it does not explicitly name or contrast with the sibling.

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?

Usage is implied by 'short text' and the Proof-100/blockchain workflow, but there is no explicit guidance on when to choose this over timestamp_fingerprint or check_balance. It also does not mention prerequisites such as having a proof available.

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