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

With no annotations, the description carries the full load. It usefully discloses that this is an on-chain write, that it is executed from the caller's own wallet, and that apiKey plus payerPrivateKey are both needed (implying the caller pays gas). It omits reversibility, idempotency (what happens if the commitment already exists), and any failure/rate-limit behavior.

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?

A single compact sentence with the action and target front-loaded and the credential requirement attached as a parenthetical. Nothing is padded, though the parenthetical credential note could be tighter or split for scanability.

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 the critical auth prerequisite but leaves the agent without success/failure semantics, return information (e.g., tx hash), or behavior when the commitment already exists. Adequate but with clear 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 50%: apiKey and payerPrivateKey are documented in the schema, but commitmentHex and environmentUuidHex have no descriptions. The description partially compensates by decoding commitmentHex as a 32-byte value (matching minLength 64 hex chars) and by tying the two credentials to the wallet write, but it says nothing about the required environmentUuidHex.

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?

Specific verb + resource: 'Write a 32-byte commitment to Veya.sol' names both the operation and the on-chain target, and the 'from YOUR wallet' framing separates it from read-side siblings such as veya_verify_commitment_onchain and veya_commitment_exists. It does not explicitly name those siblings as alternatives, so it stops short of a 5.

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 when-to-use statement or comparison to the read-side commitment tools is offered; the agent must infer that this is the write path while veya_commitment_exists / veya_verify_commitment_onchain are the read paths. The only guidance is the parenthetical naming two credentials, which is prerequisite information rather than usage context.

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