ncloud_pca_get_ca_chain

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

Annotations already declare readOnlyHint=true, so the read-only behavior is clear. The description adds that the output is in PEM format, but does not disclose other traits like size limits or whether the chain includes intermediate/root certificates. There is no contradiction with annotations.

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 a single clear sentence with no unnecessary words. It is well-structured and efficient.

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 simple read operation with one parameter, the description is mostly adequate. However, it lacks information about the return value structure (e.g., single string vs. array of PEMs) and does not explain what the chain contains. The absence of an output schema increases the burden on the description, so a slightly higher score is justified but not a 5.

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 only parameter 'caTag' has a minimal schema description 'CA tag value'. The tool description does not add any meaning beyond the schema. Baseline is 3 due to 100% schema coverage, but the description offers no additional semantic value.

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 verb 'Get' and the resource 'certificate chain (PEM) of a Private CA'. It specifies the exact output format (PEM) and the resource type, distinguishing it from sibling tools like 'ncloud_pca_get_ca' (get CA details) and 'ncloud_pca_get_ca_crl' (get CRL).

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 provides no guidance on when to use this tool versus alternatives. It does not explain when to fetch the chain versus just the CA certificate or CRL, nor does it mention prerequisites like having a CA tag.

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