browser_claim_tab

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

With no annotations, the description carries the full burden; it does disclose two real traits — that claiming is exclusive (implying a lock/ownership state change) and that expected_url/expected_title must match exactly. It omits what happens on mismatch (error vs. no-op), whether another connection's claim blocks this one, and whether the claim is released.

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?

A single densely packed sentence with the core constraint (latest discovery) and the validation rule front-loaded. No filler, though 'Exclusively claim' is compact to the point of ambiguity.

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 4-parameter mutation-ish tool with no annotations, no output schema, and no schema descriptions, the definition is thin. It leaves unaddressed what the claim returns, what error a mismatched URL yields, and how browser_id relates to 'this connection'.

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 coverage is 0% across four parameters, so the description must compensate: it explains tab_id's origin and that expected_url/expected_title are exact-match guards. browser_id is required yet never explained, and no format or value examples are given for any parameter.

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?

States a specific verb ('claim') on a specific resource ('tab_id') and pins the source to 'this connection's latest tab discovery', which separates it from browser_discover (finds tabs) and browser_open_tab (creates one). The word 'exclusively' hints at an ownership/locking semantic that is not quite nailed down.

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 phrase 'from this connection's latest tab discovery' implies a prerequisite call to browser_discover before this tool can be used, which is useful routing. It never states when not to use it or contrasts it with browser_open_tab / browser_tab_control, and no failure preconditions are given.

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