firefox_release_tab

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

Annotations already flag destructiveHint=true, readOnlyHint=false, idempotentHint=false, and openWorldHint=true, so the safety profile is covered structurally. The description adds real value on top: it says exactly which capabilities are revoked (agent control, navigation protection), that debug collection stops, and that site permissions survive. It does not state whether the release is reversible or how to re-acquire control, which keeps it below a 5.

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?

One front-loaded sentence with three purposeful clauses, each conveying a distinct behavioral fact, plus a short preservation note. No filler or redundancy.

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?

For a single-parameter tool whose annotations already carry the destructive/idempotency profile and with no output schema to explain, the description covers the effects and the retained state well. The remaining gap is the undisclosed tabId semantics and what the call returns or errors on.

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 0% and the sole parameter tabId is never mentioned in the description, so no meaning is added beyond the bare 'integer, minimum 0'. It does not say where a tabId comes from (e.g., firefox_list_tabs) or what happens for an invalid or already-released id.

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?

Names a specific verb ('release') and resource ('a tab'), and enumerates the concrete effects: ending agent control, ending navigation protection, and stopping debug collection. That is far more informative than a name restatement and differentiates it from lifecycle siblings like firefox_open_tab or firefox_tab_group, though it never names which sibling is the counterpart.

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?

There is no explicit when-to-use or when-not-to-use guidance. The clause 'Site permissions remain' implies a contrast with a more thorough teardown, but the agent must infer that, and nothing tells it when to prefer release over firefox_tab_action, firefox_tab_group, or re-requesting via firefox_request_access.

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