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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so safety is covered. The description adds only that the result includes trend, momentum, key levels and an interpretation — useful framing, but it does not say how the values are computed, what timeframe they assume, or how the interpretation should be read.

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?

One front-loaded sentence with zero filler; every word names a distinct output component. Nothing to trim.

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, and annotations cover the safety profile. What remains missing is the one thing an agent cannot infer: what counts as a valid symbol and what timeframe the analysis assumes.

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 description must carry the burden and it does not: 'a symbol's' is the only hint, with no format, example, or asset-class scope (equity, index, option root). The schema's regex and 32-char limit constrain shape but not meaning.

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?

Specific verb + resource ('Get a symbol's trend, momentum, key levels and technical interpretation'), and the enumerated components make it clearly distinct from quote, signal and screener siblings. It stops short of naming a sibling alternative, but the analytical content sets it apart on its own.

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 on when to reach for this versus get_signals, get_pivot_signals, get_market_snapshot or get_quotes, all of which could plausibly overlap. No prerequisites, timeframe assumptions, or exclusions are stated.

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