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

The description meaningfully extends the readOnlyHint=true and idempotentHint=true annotations by revealing a state-dependent contract: 'authenticated:true' with empty 'pending[]' when all providers connected, vs. per-install URLs when credentials are missing. This documents return-shape variance beyond what annotations convey.

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?

Two crisp, well-constructed sentences. Pasted together: one defines what's returned, the second explains the state-conditional branch ('When all providers are connected... When credentials are missing...'). The description front-loads the core purpose and conveys a conditional contract with zero fluff.

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 parameterless read-only status/health-check tool, this fully captures the contract: the two possible states, the exact field names the agent can expect, and the ordering of fields ('connect_url' for the toolkit and per-install URLs). Clearly addresses operational context.

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 tool has zero parameters and schema coverage is trivially 100% (empty properties). With no parameters to document, the description isn't burdened with explaining inputs. The baseline 4 applies here since there's truly nothing to compensate for.

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?

Description uses a specific verb+resource ('Returns connection status and URLs') and clearly explains the tool's scope. It could earn a 5 with explicit sibling differentiation (e.g., vs. 'toolkit_info' or 'authenticate'), but the behavior is clearly defined.

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?

Reading between the lines, an agent would know to call this when checking connection state, but there's no explicit 'when to use vs. alternatives' guidance. The sibling tools (authenticate, toolkit_info, show_version) suggest related but distinct purposes, and the description doesn't clarify when to pick 'connect' over 'toolkit_info'.

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