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

With no annotations, the description does meaningful work by disclosing that this is a hosted service receiving secrets and warning against production keys, plus the password-change precondition. However, it says nothing about where conversion happens, whether material is retained, or how failures are reported — substantial gaps for a tool that ingests private keys.

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 purpose is front-loaded in a single clause and the security warning is prominent. The warning is stated twice (Chinese then English), which is redundant but defensible for a security-critical notice.

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?

An 11-parameter, no-annotation, no-output-schema tool needs more: the description never says what comes back after conversion (blob, base64, alias) or how the result is delivered. Purpose and safety are covered, but the return-side and parameter interplay are 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 coverage is 73% and the description adds no parameter-level detail beyond the general directionality and password-change note. It does not explain source vs target password roles, blob/alias expectations, or the AIA-fill switch, leaving those to the 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?

States a specific verb (convert) with the exact resource set (certificate/key formats PEM/P12/JKS) and the supported direction ('any direction'), plus an extra capability (password change when the original password is known). This clearly separates it from decode-style siblings like cert.decode and csr.decode.

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?

It implies the use case (moving credentials between keystore/PEM formats) and gives one real precondition — password change requires knowing the original password. It never names an alternative tool or says when not to use it versus cert.decode or inspect.run, so guidance is only implied.

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