Resubscribe Subscriber

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

Annotations already indicate mutation (readOnlyHint=false, idempotentHint=true). Description adds details on what changes are made (remove opt-out, mark active), but does not cover error conditions or other side effects.

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 with no waste. The first sentence clearly states the action and trigger, the second explains the underlying changes. Front-loaded and efficient.

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 the tool's simplicity and presence of output schema (not shown but referenced), the description adequately explains the purpose and effect. Could mention prerequisites or error cases, but not critical for basic usage.

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. Description adds no extra meaning beyond the schema's parameter descriptions. No explanation of how the parameters relate to the resubscription process.

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 uses specific verb 'Resubscribe' and resource 'subscriber', and clearly states the effect: removes opt-out and marks active. This distinguishes it from sibling tools like 'unsubscribe_subscriber' or 'update_subscriber'.

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?

It provides context 'after renewed opt-in', but lacks explicit guidance on when not to use this tool or alternatives. No mention of prerequisites like subscriber must be previously unsubscribed.

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