Cancel spot order

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

Discloses that cancellation releases frozen funds, requires specific scope, and is paper trading only. Without annotations, this description effectively communicates key behavioral traits, though lacks details about irreversibility or side effects.

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 concise sentences, front-loaded with the main purpose. Every sentence adds value without redundancy.

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 simple tool with one parameter, no output schema, and no annotations, the description is complete. It covers purpose, parameters, required scope, trading environment, and disclaimer.

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?

Only parameter 'orderId' is sufficiently described in the schema (100% coverage). The description adds no new meaning beyond what's already in the schema, which is adequate for a single integer parameter.

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?

Description explicitly states 'Cancel an open spot order by id' and mentions 'releases frozen funds'. Clearly identifies the action, resource, and method, distinguishing it from siblings like 'place_spot_order'.

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?

Provides context: 'Requires the trade:spot scope. Paper trading only — virtual funds (50,000 mUSD). Not financial advice.' Informs when to use and limitations, but lacks explicit mention of alternatives or when not to use.

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