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

With no annotations supplied, the description carries the full disclosure burden. It usefully reveals the exclusivity semantics and that the protection covers only ground-level entities, but omits whether claims are permanent or releasable, what happens on overlapping claims (error vs. partial grant), and any permission or room-ownership requirements for a mutating operation.

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 short sentences: the behavioral rule first, the payload format second. No filler, no restatement of the tool name, and the most decision-relevant information (exclusivity) is front-loaded.

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 small two-parameter mutation tool with no annotations and no output schema, the definition covers the core intent and box format adequately. It falls short on the undocumented 'room' parameter and on failure/conflict behavior, both of which an agent needs before committing a claim.

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 0%, and the description compensates for the nested 'box' parameter by giving the shape and coordinate order as {min:[x,y,z], max:[x,y,z]}, which the schema alone does not convey. The second parameter, 'room', is never mentioned, so its constrained format (commons vs. r_<id>) and default behavior are left entirely undocumented.

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 ('Claim an axis-aligned box in a room') plus the concrete consequence ('only you may place ground-level entities inside it'), which is far more informative than the bare name world_claim. It stops short of naming how it differs from near-neighbors like world_lock or world_place, so an agent still has to infer the boundary.

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 phrase 'so only you may place ground-level entities inside it' implies the usage context: claim before placing entities you want protected. However, there is no explicit when-to-use/when-not, no mention of alternatives such as world_lock, and no statement about what to do if the box is already claimed.

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