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

Discloses ownership outcome, rate-limiting per founder, and return content. Annotations provide no behavioral hints (readOnlyHint=false, destructiveHint=false), so description carries full burden and meets it thoroughly.

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?

Three concise sentences: action, requirements, return. No wasted words. Front-loaded with the core purpose.

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 creation tool with constraints and a return value, the description covers purpose, prerequisites, output. With output schema present, completeness is sufficient.

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 100% with good descriptions. The description adds context about slug format constraints and requirement but doesn't need to expand further since schema is already clear. Adds high-level purpose mapping.

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 'Create an organisation' and adds 'you become its first owner', distinguishing it from other org tools like rename, get, etc. It also specifies constraints and return value.

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?

States prerequisites ('Requires a minimum karma balance and is capped per founder per 24 hours'), giving clear when-to-use context. Does not explicitly mention when not to use or alternatives, but the conditions imply usage boundaries.

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