tailscale_tailnet_contacts_set

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

No annotations are provided, so the description carries the burden. It discloses the confirm requirement as a behavioral trait, but does not mention authorization, side effects (e.g., whether updates are additive or replace existing), or any rate limits. The description adds some value but leaves gaps.

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, 16 words, with the purpose front-loaded. No fluff, every word earns its place. Excellent efficiency.

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?

Given no output schema, the description could explain what the tool returns or confirm behavior. It mentions the confirm flag but not what happens if falsified. It also doesn't clarify if updating one contact clears the others. Somewhat lacking for a mutation tool with nested objects.

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 baseline is 3. The description adds little beyond the schema: it reiterates that any combination of contacts can be provided, but does not explain nuances like whether emails must be valid, or any format constraints.

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 clearly states the action ('Update') and the resource ('contact email addresses for the tailnet'). It distinguishes itself from the sibling tool 'tailscale_tailnet_contacts_get' which retrieves contacts, so the agent knows this is the mutation tool.

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 mentions the requirement 'confirm: true' and indicates that any subset of contact types can be provided. However, it does not explicitly contrast with the get tool or state when not to use it, but the context is clear enough.

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