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

With no annotations provided, the description carries the full behavioral burden. It discloses that the operation grinds keccak256, is deadline-bounded, returns the nonce/work hash/difficulty/band, and that the nonce is bound to (chainId, contract, minter). It also notes that if the target is not reached within the time budget, the best valid nonce found is still returned. This is rich, honest behavioral detail.

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 core facts are front-loaded and the structure moves from purpose to binding warning to return values to deadline guidance. The only waste is the opening 'DO THE WORK.', which is stylistic but not informative. Every other sentence earns its place.

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?

Given no output schema, the description compensates by listing exactly what is returned: nonce, work hash, difficulty in leading-zero bits, and band. It also covers timeout behavior and the high-difficulty alternative, and the sibling context shows where this fits before nonce_mint_packet. Nothing critical is missing for correct invocation.

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 100%, so the baseline is 3 because the schema already documents minter, maxSeconds, and targetBits well. The description adds conceptual context about nonce binding and why mining for the correct address matters, but it does not add new parameter syntax or format details beyond the schema. That is adequate but not exceptional.

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 opens with a specific verb and resource: 'Grinds keccak256 to find a proof-of-work nonce valid for a specific minter address.' It clearly states the purpose and distinguishes this tool from siblings by calling it 'the only way to become eligible to mint an 8004 NONCE piece.' This is precise, not a tautology.

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 description explicitly says when to use the tool ('This is the only way to become eligible to mint') and when not to: 'for difficulty above ~20 bits, run the local miner script instead of waiting on a server.' It also warns that the nonce is bound to the minter address, so the agent must mine for the address that will send the transaction. This is clear decision guidance.

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