manage_subscriptions

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions 'fetching details' (read) and 'creating subscriptions' (write), implying both read and write operations, but doesn't specify permissions required, side effects, rate limits, or response formats. This is inadequate for a tool that performs mutations.

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?

The description is a single, efficient sentence that avoids redundancy. However, it could be more front-loaded with critical details (e.g., specifying the resource type) to improve clarity without sacrificing brevity.

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 complexity of a tool that handles both read and write operations for subscriptions, with no annotations and no output schema, the description is incomplete. It fails to explain key behavioral aspects like authentication needs, error handling, or what 'fetching details' returns, leaving significant gaps for agent understanding.

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?

The schema description coverage is 100%, with both parameters ('countryCode' and 'currencyCode') clearly documented in the schema. The description adds no additional meaning beyond implying these are used for 'subscription pricing,' which is already covered by the schema descriptions. Baseline 3 is appropriate as the schema does the heavy lifting.

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 states the tool can 'fetch details and create subscriptions,' which provides a general purpose but lacks specificity about what resources are involved or how it differs from potential sibling tools like 'manage_users' or 'manage_notifications.' It's vague about the exact scope of 'subscriptions' (e.g., user subscriptions, product subscriptions).

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?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites, context (e.g., after authentication), or exclusions, leaving the agent to infer usage based on the name alone among many sibling tools.

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