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

With no annotations, the description must fully disclose behavior. It does mention a rate limit ('at most one per tick') and a payment requirement, but it fails to explain side effects (e.g., record creation, immutability), permissions, or reversibility. The term 'witnessed' is vague, and no information about errors or output is provided. This is insufficient for an agent to reliably invoke the tool.

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 four sentences and mixes essential operational details with metaphorical language ('record chains beside the world's state'). It is not tightly structured; the core action is front-loaded, but the meaning is diluted by poetic phrasing. It is neither overly verbose nor highly disciplined, so it earns a mid-level score.

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 a tool with 7 parameters, no annotations, and no output schema, the description is far from complete. It does not explain parameter meanings, usage conditions, or expected behavior in a way an agent can act on. The rate limit and payment info are useful fragments, but they do not form a coherent operational picture. A substantial amount of context is missing.

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%, so the description must compensate, but it provides almost no parameter semantics. Only 'payment' is referenced implicitly, and the 'hash' parameter is implied by 'attach your own sha256'. The remaining parameters (addr, start, amount_degrees, salt, label) are completely unexplained. The description adds negligible value beyond the raw 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 ('Attach') and an object ('sha256 to the face-term'), but 'face-term' is an undefined, domain-specific term that leaves the actual purpose ambiguous. It also does not distinguish this tool from siblings like 'claim' or 'hold_ground', which likely overlap in scope. The poetic phrasing obscures clarity.

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 only usage guidance is a payment requirement ('pass the x402 payment... or pay the card checkout first'), but there is no explicit statement about when to use attest versus alternatives. The reference to 'see claim' hints at a dependency but does not clarify selection criteria. An agent is left without clear direction for choosing this tool over others.

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