Add debugger blackbox patterns

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

No annotations are provided, so the description carries full responsibility. It states 'Append' and 'update', but does not clarify whether existing blackbox patterns are preserved or overwritten, what session scope is affected, or whether the operation has side effects beyond the CDP call. The brevity leaves ambiguity despite the explicit mention of Debugger.setBlackboxPatterns.

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 sentence that is efficiently worded and directly states the core action. It is not overly verbose, though it could benefit from a second sentence clarifying behavior or parameters.

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 tool with three parameters and no output schema, the description is too sparse. It does not cover session-related nuances, whether the operation is additive or replacing, or what the result/return value is. The lack of any behavioral or parameter detail makes the tool hard to invoke correctly without external knowledge.

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 0% description coverage, with no per-parameter documentation. The description mentions 'patterns' but does not explain sessionId or targetSessionId, leaving the distinction between the two session-related parameters entirely opaque. No additional meaning is conveyed beyond what the raw schema types imply.

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 uses a specific verb 'Append' and names the resource 'debugger blackbox patterns', and it explicitly ties the operation to the CDP method Debugger.setBlackboxPatterns. This clearly distinguishes it from siblings like blackbox_list (listing) and blackbox_add_common (adding common patterns).

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 provides no guidance on when to use this tool versus alternatives. It does not mention prerequisites (e.g., a debugger session must be active), nor does it reference sibling tools like blackbox_add_common or blackbox_list, which could clarify the intended use case.

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