manage_variables

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

With no annotations present, the description carries the full burden but only states that it creates and sets values. It does not disclose behavioral traits like idempotency, permission requirements, side effects on existing data, or whether actions are reversible. This is insufficient for a mutation tool with multiple actions.

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 conveys the tool's scope without redundancy. Every word is purposeful, and it is appropriately front-loaded with the main actions.

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 complexity (10 parameters, three distinct actions, no output schema, no annotations), the one-sentence description is inadequate. It does not explain the different actions, when each applies, or expected outcomes, leaving a significant information gap for the agent.

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 input schema has 100% description coverage for all parameters, so the schema already provides meaning. The description adds no additional parameter-specific context, meeting the baseline expectation but not exceeding it.

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 three core actions (create collections, variables, set values/aliases) with specific verbs and resources. However, it uses the vague term 'comprehensive' and does not distinguish from sibling tools like 'delete_variables' or 'get_variables', which have different purposes.

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 such as 'set_bound_variable' or 'get_variables'. The description lacks any context about prerequisites, preferred scenarios, or exclusions, leaving the agent without usage direction.

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