fl_set_channel_identity

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

Annotations already declare it destructive and non-read-only, lowering the bar. The description adds value by promising 'per-field readback proof', a behavioral guarantee of verification after the write. No contradiction observed.

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?

One sentence, only 15 words, front-loaded with the key action, resource, and distinct behavioral trait. Zero filler or 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?

The schema documents all five parameters and output schema exists for return values. The description covers the primary purpose and the notable readback behavior, which is the main aspect not already exposed by the schema. It does not mention the optional guard parameters (expected_before/session_fingerprint), but these are thoroughly documented in the schema itself.

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% and the description does not elaborate on parameter-specific semantics. Since the schema already carries descriptions for name, color, and expected_before, the description adds little to parameter understanding but does not need to.

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?

Description states a specific verb ('set') with the exact resource ('channel's name and/or color') and a distinctive behavior ('per-field readback proof'). It clearly distinguishes this from sibling identity tools like fl_set_pattern_identity or fl_set_playlist_track_identity across different object types.

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 tool does not explicitly say when to use it instead of alternatives. The channel context is implied by the name and description, and 'per-field readback proof' could signal a use case for verifying writes, but no explicit when-to-use or exclusions are given.

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