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

Annotations already declare readOnlyHint=true, openWorldHint=false and destructiveHint=false, so the safety profile is covered. The description adds real behavioral value beyond that: it exposes that the response includes a match score with per-condition judgments, and — most importantly — that the agent cannot act on the bid itself and must hand the user off to sourceUrl. It stops short of describing pagination or error behavior, which are not relevant for a single-record fetch.

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 definition is short and front-loaded: the field list comes first, followed by the action guidance. Every sentence carries content, though the participation hand-off could be tightened slightly.

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?

With no output schema, the description correctly enumerates what the call returns, and it covers the key behavioral constraint that participation is out-of-band. The only meaningful gap is the undocumented profileId parameter, which affects the match-score result the description promises.

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 description says nothing about the two parameters. bidId is documented in the schema (including the sibling tools it comes from), but profileId has no description in either the schema or the description, leaving that parameter's meaning completely unexplained at 50% coverage.

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 names a specific verb and resource (retrieve the details of a single bid announcement) and enumerates the returned fields (estimated price, deadline, opening, contract method, region/industry restrictions, qualification deadline, match score). This distinguishes it from the plural siblings search_procurement_bids and list_procurement_matches, though the distinction is implied via '1건' rather than stated explicitly.

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 tells the agent what to do after fetching (guide the user to sourceUrl) and clarifies that bid participation happens manually on Nara Market, which is genuinely useful routing guidance. However, it never states when to call this tool versus search_procurement_bids or list_procurement_matches, so the selection guidance remains implied.

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