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

Annotations already declare destructiveHint=true and readOnlyHint=false, but the description adds real context: delete closes the chat for everyone while #allmänt is preserved, and create/rename/access trigger a confirmation card in a förening or all-ages community (with under-18s possibly present). These are meaningful behaviors not captured by the boolean hints.

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?

Purpose is front-loaded, then the action-specific requirements are laid out compactly with clear delimiters. The Swedish terms and dense parentheticals add mild parsing load, but no sentence is wasted.

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?

An output schema exists so return values need no explanation, and annotations cover the safety profile. The description supplies per-action requirements and the deletion/confirmation semantics, leaving little an agent would need before calling it correctly.

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 high (86%), so the baseline is 3, but the description adds value the schema cannot: it links parameters to actions (create needs name; rename needs kanal+name; access needs kanal+access and/or optional; delete needs kanal+confirm). That action-to-parameter mapping is the genuinely useful addition.

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 set of verbs (make, rename, re-lock, remove) acting on a clearly defined resource: a #kanal, glossed as 'a chat inside a home the person runs'. It also distinguishes scope by routing writes within a channel to send_to_conversation, so an agent can separate it from siblings like send_to_conversation.

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 description maps each action value (create/rename/access/delete) to the parameters it requires, which is concrete when-to-use-per-action guidance and goes well beyond a generic blurb. It lacks an explicit 'use X instead when Y' exclusion except for the send_to_conversation write case, so it stops short of a 5.

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