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

With no annotations, the description carries the full burden of disclosing behavior. It does add meaningful context by stating 'Signed with Ed25519' and 'Reference-grade implementation', which informs the agent about cryptographic signing and maturity. However, it does not disclose potential side effects, reversibility, permissions, or what the response contains, leaving significant gaps.

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 brief and mostly front-loaded with the core function. Each sentence adds either a unique identifier, signing detail, or maturity level. However, terms like 'Wire format normative' and 'production-grade is Layer B' are cryptic and may require external context, slightly reducing clarity.

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?

The tool has moderate complexity with 5 parameters (3 required), nested objects, and no output schema. The description covers the main purpose and some behavioral aspects, but lacks details on return format, errors, or operational context. It is adequate for a basic understanding but not fully complete for safe autonomous 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 schema already documents all parameters. The description does not add specific parameter-level guidance beyond the schema, but it does imply the purpose of 'claim' by saying 'committing an agent to a claim'. This is consistent with the baseline; no extra value is added.

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 clearly states the tool's function with a specific verb ('Issue') and resource ('attestation warranty'), and explains the commitment ('committing an agent to a claim'). It includes a protocol identifier (C18) that differentiates it from sibling tools like attest_warranty_breach and attest_warranty_get.

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 does not indicate when to use this tool versus alternatives, nor does it specify any exclusions or conditions. While it mentions 'Reference-grade implementation' and 'production-grade is Layer B', it does not clarify when this reference version is appropriate or when to prefer another tool.

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