HALOWERK: Read the TLS certificate chain of a host: every certificate with its names, vali

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

The description discloses significant behavioral context beyond the annotations: it opens a network connection, is a paid operation (0.002 USDC per call via x402), and provides details about chain validation implications (e.g., missing intermediates). Annotations only declare readOnly and not destructive, so this added transparency is valuable and not contradictory.

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 front-loaded with a clear summary, but it contains redundant pricing information stated twice in German ('Kostenpflichtig...' and later 'Preis...'). The long final paragraph, while informative, could be tightened to avoid repetition and improve scannability.

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 there is no output schema, the description provides a comprehensive list of what is reported: per-certificate details, hostname coverage, expiry days, self-signed/weak algorithm flags, missing intermediates, protocol version, and cipher. This is almost complete, though the exact output format is not specified.

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?

The input schema has 100% description coverage for all four parameters, so the baseline is 3. The description does not add parameter-specific semantics beyond mentioning 'expiry warnings' and 'days remaining' which loosely relate to warn_days, but it does not improve on the schema's own descriptions.

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: 'Read the TLS certificate chain of a host', listing the exact information returned (names, validity, key type, signature, expiry warnings, hostname coverage). This clearly distinguishes it from sibling tools like cve_check or jwt_verify, which address different security concerns.

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 gives clear context for use by explaining that it connects directly to the host, has no third-party dependency, and no rate limit, implying reliability and self-contained operation. However, it does not explicitly state when to use this tool over alternatives or when not to use it, so it stops short of full guidance.

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