List Realia launchpad coins

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

Annotations already establish this as safe, read-only, and idempotent. The description adds behavioral value by specifying the 'newest first' ordering and the exact return fields, which go beyond what the annotations declare. No contradiction with annotations.

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?

A single sentence with no filler. The main action, ordering, and key output fields are all front-loaded, making it easy to scan and act on.

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 rich annotations, full parameter schema coverage, and presence of an output schema, this description is complete. It clarifies the scope ('launched on Realia datasets'), ordering, and result contents, so an agent has the necessary context to call the tool correctly.

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 input schema already documents both parameters (limit and query) with 100% coverage, so the baseline is 3. The description adds no additional parameter-specific guidance, but it does not need to since the schema handles this fully.

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 uses a specific verb ('List') and names the exact resource ('coins launched on Realia datasets'), with ordering and output fields. This clearly distinguishes it from siblings like get_coin (single coin) and search_datasets (dataset search).

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 implies a clear use case: listing all Realia launchpad coins in reverse chronological order. It does not explicitly mention alternatives or exclusions, but the context is clear enough that an agent can select this tool over the listed siblings.

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