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

Annotations cover the safety profile (readOnlyHint=true, destructiveHint=false, idempotentHint=false, openWorldHint=true), so the description does not need to restate safety. It adds only the 'normalized' and 'cross-network' qualifiers, which hint at aggregation behavior across providers but stop short of disclosing auth requirements, rate limits, or whether snapshot freshness is guaranteed. The bar is lower with annotations, but the added value is thin.

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?

A single five-word sentence with no filler. Well front-loaded and free of redundancy. For a short description, this is ideal structure.

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?

An output schema exists, so return values need not be explained. However, with one undocumented parameter at 0% schema coverage, zero usage guidance, and no differentiation from eleven siblings, the description is not complete enough for an agent to invoke the tool confidently. The time-window parameter alone warrants at least a clause.

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 0%, so the single 'since' parameter is completely undocumented in the structured data. The description does not mention the time-window parameter, its expected format (ISO 8601? relative?), or any default behavior when it is omitted. Given the zero coverage, the description should have compensated and does not.

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 states a verb ('Get') and resource ('analytics snapshots') and adds a scope qualifier ('normalized cross-network'). This is more specific than a tautology, but it does not differentiate from siblings like get_connection_health, get_delivery_receipt, or get_post_status. It remains vague about what an 'analytics snapshot' concretely contains versus other status/health tools in the set.

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?

There is no explicit when-to-use or when-not-to-use guidance. The phrase 'cross-network analytics snapshots' implies a multi-account summary, which may distinguish it informally from per-connection diagnostic tools, but the description never states that condition. The agent is left to infer selection from the name alone.

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