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

Annotations cover the safety profile (readOnlyHint=false, destructiveHint=true, openWorldHint=true), and the description adds real behavioral context beyond that: credit requirement, that it's free, that disabling stops new signatures immediately but existing ones expire within 5 minutes, and that signed traffic is recognized by Cloudflare and other bot managers. It does not, however, describe auth/permission requirements for enabling.

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?

Purpose is front-loaded in the opening sentence, then structured by action (get, set). There is mild redundancy: the signature/outbound-request phrasing, the 'free' qualifier, and the 5-minute expiry are each effectively stated more than once across description and schema.

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?

No output schema exists, yet the description notes what 'get' returns (on/off state and whether the account may enable it), and the mutation lifecycle for 'set' is covered, including the 5-minute expiry grace. Adequate for an agent to call this toggle correctly.

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 only 50% (action has no schema description), but the description compensates by explaining the get/set semantics and the effect of enabled=true vs false. It meaningfully adds meaning beyond the enum and the enabled field description, which are the only structured cues.

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+resource: letting sandboxes obtain Runtime's Web Bot Auth signature for outbound HTTP requests, or stopping them. This is a distinct capability from siblings like runtime_networks_wireguard or runtime_networks_upstream_proxy, though it does not name them explicitly.

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 splits behavior by the 'get' and 'set' actions and explains what each does, which implies when to invoke each. However, it gives no explicit when-to-use guidance, no prerequisites beyond 'needs credit', and no comparison to alternative networking tools an agent might reach for instead.

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