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

With no annotations, the description must disclose behavioral traits on its own. It mentions 'paper' (suggesting non-real) and 'points only' (stake currency), but it does not state side effects like point deduction from balance, irreversibility, or what happens on success/failure. The agent has no information about consequences of calling this 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?

The description is a single sentence with no redundant words. It is front-loaded with the action and is appropriately terse. However, it could be slightly longer to convey more necessary context without losing conciseness, so it does not reach a perfect score.

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?

The tool has four required parameters, no output schema, and no annotations. The description provides almost none of the crucial context: parameter meanings, return values, error conditions, or dependencies. An agent cannot correctly invoke this tool without external knowledge of what agent_id, match_id, and side refer to, or what the tool returns. The description is wholly inadequate for the tool's complexity.

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 coverage is only 25% — only stake_points has a description. The description adds only that stakes are in 'points,' which matches the schema but does not explain the other three parameters (agent_id, match_id, side). The side enum (H/D/A) is unexpanded, and the relationship between parameters (which agent, which match) is unstated. The description adds minimal value over the schema.

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 action: 'Place a paper bet against our agent's prediction (points only).' It identifies the specific verb ('place'), the resource ('a paper bet'), and the unique scope ('against our agent's prediction'), which distinguishes it from read-only siblings like get_bet or get_predictions. This is a distinct and unambiguous purpose.

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?

There is no guidance on when to use this tool versus alternatives such as submit_prediction or get_my_bets. The description only states what the tool does, not the context in which it should be chosen, nor any prerequisites or exclusions. An agent would have to infer usage from the name and general domain knowledge.

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