fl_set_pattern_identity

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

The annotations already declare destructiveHint=trueched and readOnlyHint=false, so the write nature is known. The description adds the cryptic 'per-field later-tick proof' concept but does not explain it; the session_fingerprint parameter description later clarifies the concurrency guard, partially compensating.

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 one clear, action-first sentence but sacrifices some clarity with the jargon-heavy 'per-field later-tick proof' phrase. Still, it is compact and contains no filler.

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?

The tool has an output schema, rich parameter descriptions, and annotations covering safety. The only ambiguity — the meaning of 'later-tick proof' — is resolved in the session_fingerprint parameter description, making the tool effectively callable.

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 100%, with each parameter comprehensively explained in the schema. The description adds no extra parameter-level detail, so the baseline 3 applies.

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 states a specific verb ('Set'), the target ('pattern name and/or color'), and a distinctive behavior ('per-field later-tick proof'). This clearly differentiates it from sibling tools like fl_set_pattern_length or fl_select_pattern.

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?

No guidance is given about when to use this tool versus alternatives that also modify pattern or channel identity. There is no mention of prerequisites, exclusions, or preferred scenarios.

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