List repositories with filtering and pagination options.

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

Annotations already indicate readOnly and openWorld hints. The description adds behavioral context by stating it can be called immediately, implying no side effects. It doesn't elaborate on pagination behavior, but given the annotations, this is sufficient.

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 extremely concise: one short sentence plus a call-to-action. Every element serves a purpose with no wasted words.

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 well-documented schema (100% coverage), output schema presence, and annotations, the description is complete enough. It adds the valuable instruction to call immediately, which aids an 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?

Schema description coverage is 100%, so the description's mention of 'filtering and pagination options' only summarizes the schema without adding new meaning. Baseline 3 is appropriate.

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 explicitly states 'List repositories with filtering and pagination options,' providing a specific verb and resource. It clearly distinguishes the tool from siblings, which are focused on different domains (advisor, inventory, etc.).

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 includes 'CALL IMMEDIATELY - No information gathering required,' indicating immediate usability without prerequisites. However, it does not provide explicit guidance on when not to use or alternatives, which slightly reduces the score.

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