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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world. The description adds useful context on what is returned (type, live status/reply mode, timestamp) and why (guarding an edit), but doesn't mention staleness, auth requirements, or output shape.

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?

A single front-loaded sentence with zero waste. It's appropriately sized for a simple two-param read tool, though slightly dense by packing purpose and fields together.

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?

With an output schema present (no need to explain returns) and rich annotations carrying the safety profile, the description covers purpose, returned fields, and motivation. Adequate for a straightforward read tool.

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% and both required UUID params are documented in the schema with provenance hints. The description adds no parameter-level detail beyond the schema, so 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?

States a specific verb (reads) and resource (channel) and enumerates the returned fields: type, live status/reply mode, timestamp. It hints at differentiation from channels_list by describing exact single-channel detail, though it doesn't name the sibling.

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 phrase 'needed for a guarded edit' implies the use case, but no explicit when-to-use alternatives or exclusions are given. An agent must infer that this precedes channel_settings_edit.

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