MemoryMesh

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

With no annotations provided, the description carries full burden for behavioral disclosure. While 'Add' implies a write/mutation operation, the description doesn't disclose any behavioral traits: no information about permissions required, whether this is idempotent, what happens on duplicate names, what the response contains, or any side effects. The description states what happens but not how it behaves.

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?

The description is a single, clear sentence with zero wasted words. It's appropriately sized for a simple creation operation and front-loads the essential information. Every word earns its place in conveying the core functionality.

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 mutation tool with no annotations, no output schema, and 0% schema description coverage, the description is inadequate. It doesn't explain what happens after creation, what validation occurs, whether there are constraints on the data, or how to handle errors. The description covers only the most basic 'what' without addressing the 'how' or 'what next' that an agent needs to use this tool effectively.

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%, so the schema provides no parameter descriptions. The tool description doesn't mention any parameters at all, failing to compensate for the schema gap. However, with only 1 parameter (a nested object), the baseline is higher than for tools with multiple discrete parameters. The description implies a player character entity but provides no guidance on what properties it should contain.

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 the action ('Add a new Player Character') and the target ('to the knowledge graph'), providing a specific verb+resource combination. However, it doesn't differentiate from sibling tools like 'add_npc' or 'update_player_character' which would require more specific context about what distinguishes player characters from other entities in this system.

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 provides no guidance on when to use this tool versus alternatives. With sibling tools like 'add_npc', 'update_player_character', and 'delete_player_character', there's no indication of when this creation tool is appropriate versus when to use modification or deletion tools, or what distinguishes player characters from other addable entities.

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