create_channel

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

With no annotations at all, the description carries the full safety/profile burden, and it does add real value by disclosing per-type edition requirements. However it omits other mutation-relevant behavior: what happens on duplicate name (schema says unique), whether creation validates/delivers, and that the secret is write-only -- the latter only appears in the schema, not the description.

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 sentences, no filler, with the core action front-loaded and the constraint data compressed into a single readable clause. Every word earns its place.

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 7-parameter create tool with 100% schema coverage and no output schema, the description covers purpose and the main gating constraint. It is slightly thin on failure/conflict behavior and write-only secret handling, which matter for a creation mutation with zero annotations.

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 the baseline is 3, but the description adds meaning the schema does not: the edition requirement mapped per value of `type`. That is genuine constraint information an agent needs before choosing a type, lifting it above baseline.

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 and resource ("Create a notification channel"), which is clearly distinct from the other create_* siblings (create_trigger, create_incident, create_escalation_policy). It never names a sibling or points at update_channel/test_channel, so differentiation is by resource noun alone rather than explicit routing.

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 edition-gating sentence gives concrete preconditions for each channel type (webhook open everywhere, email=Personal, slack/teams=Pro, telegram=Personal), which directly informs whether the caller can use this tool for a given type. It stops short of stating when to prefer update_channel over creating, or what to do when a same-named channel already exists.

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