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

With no annotations, the description carries full behavioral burden. It discloses that data is buffered from load and includes status codes, which is useful. However, it does not explicitly state whether the operation is read-only, whether the buffer resets on navigation, or whether it returns the full buffer each time—ambiguities that matter for a network inspection tool.

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?

Four sentences, each with a clear role: core purpose, buffer behavior, filter tip, and device exclusion. The structure is logical and front-loaded. There is slight redundancy between 'since it opened' and 'Buffered from load', but it does not detract from the overall clarity.

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 no output schema and no annotations, the description is reasonably complete for invocation (pageId, filter, scope). However, it leaves the return format vague beyond 'status codes' and does not clarify buffer reset behavior or page lifecycle requirements. An agent could call it correctly but might misinterpret results without further details.

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 baseline is 3. The description adds a useful hint for filter ('narrow to an API path') but does not add meaning for failedOnly or go beyond what the schema already provides for pageId. It does not compensate for any gaps because there are none, but it also doesn't significantly enrich parameter understanding.

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 tool returns network requests for a specific desktop grid browser page identified by pageId, scoped to requests since the page opened, and includes status codes. It also explicitly distinguishes itself from device-specific tools by naming alternatives, making its purpose unambiguous.

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 explicitly says 'NOT a device' and directs users to android_devtools_capture_network or ios_safari_capture_network for real phone/tablet contexts. It also advises using the filter parameter to narrow to an API path, providing concrete when-to-use and when-not-to-use guidance.

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