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

With no annotations, the description carries the full behavioral burden. 'Objects persist in the city' is a genuinely useful state disclosure that the schema does not provide, but auth needs (only hinted at by the token param), whether objects can later be removed, and any limits are unaddressed.

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 tight sentences with the purpose front-loaded and the persistence trait added as the closer. Every clause earns its place, though the kind list slightly overlaps the enum already visible in the schema.

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 no-annotation, no-output-schema mutation tool, the description covers what is created and that it persists, which is the core need. It omits success/failure behavior, location semantics, and authentication context, leaving meaningful gaps for a write tool.

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 75% and the parameters (kind, name, text, token) are already documented in the schema themselves. The description's enumeration of kinds restates the enum rather than adding format or constraint detail beyond it, so it adds only marginal value.

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 opens with a specific verb and resource ('Make something and leave it at your location') and enumerates the concrete artifact types via the enum-matching list. It implicitly contrasts with remove_object and inspect_object through 'leave it' and 'persist', but never names a sibling explicitly, so it stops short of 5.

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?

'Leave it at your location for others to find' implies the social/expressive use case, but the description never states when to choose this over speak, perform, or emote, nor any prerequisite. Usage is implied rather than spelled out.

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