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

With no annotations, the description carries the full burden and largely meets it: it discloses computation semantics (fixedAmount vs sharePercent ordering, credit-limit floor), the status enumeration, the reachedHoldDays stickiness rule, achievedAt clearing conditions, and when progress is null. It does not discuss authorization, caching, or rate limits, so the behavioral picture of the read itself is incomplete.

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?

The basic purpose is front-loaded in the first sentence, but the remaining content is a single dense run-on covering currency conversion, allocation rules, and nine status values with no bullet structure or paragraph breaks. Every sentence carries information, but the wall of text makes it hard for an agent to scan.

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?

There is no output schema and no annotations, so the description must explain the return shape, and it does so exhaustively: per-goal currency, target fields, backing accounts, the full progress object, all status values, and null-progress conditions. Nothing an agent needs to interpret the result is missing.

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, so the baseline of 4 applies; there are no parameter semantics to add or omit. The description does not need to explain inputs because none exist.

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 first sentence states a specific verb and resource ('List savings goals') plus scope ('active, paused, archived') and ordering, and the final sentence explicitly excludes the Budget plan's envelope line goals, which is the distinguishing feature from sibling get_trackers. An agent can select this tool without opening any schema.

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?

It gives clear context (read/list savings goals) and an explicit exclusion ('Not the envelope line goals of the Budget plan'), but never states when to prefer it over siblings such as get_trackers or when a goal list is inappropriate. The routing is inferable rather than spelled out.

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