bulk_add_tag

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

Discloses idempotence (should be tol) as key behavioral trait. No annotations exist, so description fully covers this. No mention of destructive effects, but the operation is additive and safe.

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 efficient sentences. First sentence defines purpose and idempotence, second provides usage guidance. No 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 simple batch operation with 2 params and no output schema, the description covers purpose, behavior, and usage guidance comprehensively. No gaps given context signals.

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%, so baseline 3. Description does not add extra semantics beyond the schema descriptions. The parameter names and types are self-explanatory.

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 verb ('一括付与する' = batch assign) and resource (one tag to multiple friends). It distinguishes from the sibling tool 'add_tag_to_friend' by noting that tool is simpler for single targets.

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?

Explicitly states when to use this tool (batch assignment) and when to use the alternative (single friend). Also explains idempotent behavior, so no error for already-assigned friends.

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