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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered. The description adds the scope (accounts for the authenticated user) but no auth requirements, rate limits, or pagination context beyond what the annotations and output schema supply.

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 sentences with no filler: the first defines what is returned and what fields it carries, the second front-loads the actionable consumer instruction. Every sentence earns its place.

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?

With an output schema present, the description need not explain return values, yet it helpfully summarizes the key fields. For a zero-param read-only listing tool this is nearly complete; only deeper operational context (e.g., whether the list can be empty or span multiple networks) is absent.

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 takes zero parameters, which is the baseline-4 case. The description additionally clarifies the meaning of a field in the response (client_user_network_id) and how to consume it, adding value beyond the empty schema.

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 and resource ('Returns the social accounts currently connected to the authenticated Blog2Social user') and enumerates the returned fields, so it is clearly distinguishable from connections.add/remove and networks.list. It does not name a sibling alternative explicitly, but the read-only listing scope is 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?

Gives concrete downstream guidance: use an account client_user_network_id in posts.create to choose the publish target, which tells an agent why it would call this tool. It lacks any explicit when-not or exclusion conditions, so it stops short of a 5.

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