parse_hkexnews_announcement

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

No annotations are provided, so the description must cover behavioral traits. It mentions the output format (page-split JSON) but does not disclose side effects, idempotency, or behavior on invalid keys. For a parse operation, it is likely safe, but the description could add more context about what happens if the local_key is invalid or the file is corrupted.

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 well-structured: a purpose sentence followed by a usage <strategy> block. Every sentence adds value, and the strategy section is front-loaded. No redundant or irrelevant information.

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 the tool has one parameter and an output schema exists, the description provides essential information: purpose, usage timing, and parameter meaning. It covers the main use case but could be more thorough on error handling or output structure details, though the output schema likely handles the latter.

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 tool description carries the burden. It explains local_key as 'Bundle key returned by list/download' and gives an example format. This adds significant meaning beyond the schema's minimal title, clarifying the source and structure. However, it doesn't specify constraints like length or character set.

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 it parses a downloaded announcement PDF/HTML into page-split JSON. The verb 'parse' and resource 'downloaded announcement' are specific, and the output format is given. It distinguishes from siblings like download_hkexnews_announcement (downloads) and get_announcement_pages (retrieves pages).

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 includes a <strategy> section that explicitly states when to use: 'Call immediately after a successful download_hkexnews_announcement, or when a retrieval tool says the PDF exists but JSON is missing.' This provides clear context and a specific alternative trigger, setting expectation for the proper invocation order.

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