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

With no annotations provided, the description carries the full burden. It does disclose one important behavioral trait—'idempotently update'—which signals that repeated calls with the same identity are safe. However, it omits other behavioral details such as whether external_id is the idempotency key, how expiration works, or what auth or content constraints apply.

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 concise sentence with no filler. It front-loads the core action and the idempotency property. However, it is so terse that it sacrifices valuable operational detail.

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 tool with five parameters, no output schema, and no annotations, this description is far too thin. It does not clarify parameter semantics, idempotency key usage, URL behavior, expiration format, or return expectations, so an agent lacks enough context to call it correctly.

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 does not explain any of the five parameters. The terms title, content, url, expires_at, and external_id are left entirely to name inference, which is insufficient for correct invocation.

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 clear verb and resource: it creates or updates content. The word 'idempotently' adds a meaningful behavioral distinction, but 'content' is somewhat generic and doesn't explicitly distinguish this from sibling tools like list_account_articles or set_promotion.

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 no guidance on when to use this tool versus alternatives such as remove_content or search. There are no prerequisites, no typical scenarios, and no exclusions, leaving the agent to infer usage context entirely.

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