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

With no annotations provided, the description carries the full burden, and it does disclose the key behavior that the stake is irrevocably lost if the bid fails or a dispute is lost. However, it omits confirmation of the write/irreversible semantics, authorization requirements, and any rate or balance constraints, leaving meaningful behavioral gaps for a state-mutating economic tool.

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?

Two compact sentences, front-loaded with the action and followed by the conditional payoff. Every clause carries information; nothing is redundant or padding.

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 4-parameter mutation tool with no output schema and no annotations, the description covers the core mechanic and consequences thoroughly. Auth/scope and idempotency are handled by the schema, so the main remaining gap is the absence of usage routing among siblings.

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 100%, so all four parameters (including idempotency_key and the deprecated api_key) are already documented in the schema. The description only loosely gestures at 'a bid' and 'stake credits' without adding format, range, or idempotency meaning beyond the schema, so the baseline 3 applies.

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 and resource ('Stake credits on a bid delivering') and the payout consequence, so an agent knows exactly what action is performed. It does not name or contrast the obvious siblings (backed_bids_withdraw, backed_bids_mine), so distinctness is inferable rather than explicit.

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 explains the payoff mechanic but gives no when-to-use guidance, no prerequisites (e.g., having credits or an eligible bid), and never names alternatives such as backed_bids_withdraw for reversing a stake. Usage must be inferred entirely from the outcome explanation.

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