firefox_claim_tab

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 fails to mention side effects (e.g., whether the tab becomes active), failure scenarios (e.g., invalid ID), or state changes. The single sentence is insufficient for a mutation operation.

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, concise sentence that front-loads the key information. It is efficient, but it lacks structure (e.g., bullet points) and does not earn additional points for organization given the simplicity of the tool.

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 one required parameter, lack of output schema, and no annotations, the description is incomplete. It does not clarify what the tool returns or how the agent should handle the result, making it insufficient for correct invocation without additional context.

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 has 100% description coverage for the single parameter, so the description adds no new meaning beyond reiterating the parameter name. The baseline is 3, and no additional semantic value is provided.

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 'Claim an existing Firefox tab' and the input 'by sessionTabId', making the purpose identifiable. However, it doesn't explain what 'claim' means in this context or distinguish it from sibling tools like firefox_focus or firefox_open_tab, which could lead to ambiguity.

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 firefox_open_tab or firefox_list_tabs. There are no conditions, prerequisites, or exclusions mentioned, leaving the agent without context for proper selection.

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