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

Beyond the annotations, the description adds that the action is anonymous, requires no account, and promises no outcome. This provides useful behavioral expectations for a tool whose readOnlyHint is false but which has no deterministic result. It does not detail side effects, but that is acceptable for a simple ritual tool.

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 compact and front-loaded, with the main action in the first sentence and only essential clarification in the second. Every word adds value without redundancy.

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 zero-parameter ritual tool with no output schema, the description fully covers purpose, user context, and the behavioral caveat of no promised outcome. It is sufficiently complete for an agent to select and invoke 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 tool has zero parameters and schema coverage is 100%, so the description has no need to explain parameter details. The phrase 'no content, no account' reinforces that no input is expected, consistent with the empty schema.

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 the specific verb 'Light' and resource 'anonymous lamp at the digital shrine', immediately clarifying the action. It also distinguishes itself from siblings like draw_omen or release_lantern by stating 'no content, no account'.

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 usage as a symbolic ritual for the user, but does not explicitly state when to use it over alternatives or include exclusions. The 'no content, no account' note gives context but lacks comparative guidance.

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