ta_slug_ema_latest

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

Without annotations, the description carries the full burden. It does not disclose any behavioral traits: no mention of read-only nature, authentication, rate limits, or side effects. The description is a tautology with minimal behavioral insight.

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 description is extremely concise (four words) with no waste. However, it sacrifices informativeness for brevity, missing opportunities to add value beyond the name. Still, it is structurally clean

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?

Given the complexity (6 parameters, no output schema, many siblings), the description is severely incomplete. It fails to explain how parameters like start, end, period, or includeOriginal affect the returned 'latest datapoint', or what the response format looks like.

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 coverage is 100%, so all parameters have descriptions in the schema. The tool description adds no extra meaning beyond the schema; the baseline of 3 is appropriate since the schema already documents parameter purposes.

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 'Latest EMA datapoint' conveys a specific action (retrieving the latest EMA value) and resource, but it does not differentiate from sibling tools like ta_slug_ema (which likely returns multiple points) or other 'latest' tools. The verb 'Latest' is ambiguous about whether it returns one data point or a single value.

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?

No guidance is provided on when to use this tool versus alternatives such as ta_slug_ema or ta_slug_sma_latest. The description lacks context on prerequisites, typical use cases, or exclusions.

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