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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so safety is covered. The description adds the useful behavioral detail that results include progress, speed, ETA, and status — rich fields not evident from annotations alone. It doesn't disclose ordering, limits, or what 'recent' means precisely, hence not a 5.

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 front-loaded sentence with no waste. Every word contributes: action, scope, and result contents.

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 simple zero-param read tool with an output schema, the description is adequate but thin. Because an output schema exists, the return-field list in the description is arguably redundant, and it omits the one thing an agent might need: what 'recent' means or how results are ordered.

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?

Zero parameters, so the baseline is 4 per the rules. There is no parameter syntax to clarify, and the description's mention of result fields is a bonus rather than a gap-fill.

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 (List) and resource (transfers) with scope qualifiers (active and recent). Clearly distinguishable from siblings like srift_session_status or srift_net_diagnose, which deal with sessions or diagnostics, not transfers.

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 implies this is for checking ongoing transfer activity, but gives no explicit when-to-use guidance, prerequisites, or alternatives. No sibling overlaps are named or excluded, leaving usage context inferable only.

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