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

Annotations already declare idempotentHint=true and destructiveHint=false; the description reinforces this with an explicit reversibility statement, which is useful reassurance for a mutation tool. It does not disclose what happens when a symbol is not present on the list, nor the response shape.

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?

Three tight sentences: purpose first, format requirement second, reversibility last. Every sentence carries information; nothing is padding.

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 single-parameter, non-destructive, idempotent mutation with full schema coverage and annotations, the description supplies everything needed: what it does, exact input format, and recovery path. No output schema exists, so return values need not be described.

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% and the schema already names the parameter, but the description goes beyond it with the exact EXCHANGE:SYMBOL grammar and four concrete multi-exchange examples (crypto, equities, Turkish, futures), which materially reduce the chance of malformed input.

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 (Remove) plus resource (symbols from the user's personal watchlist), and it is trivially distinguishable from the sibling watchlist_add. No ambiguity about what the tool operates on.

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?

States the operation clearly and notes reversibility ('just add again'), which implicitly routes the agent to watchlist_add for the inverse action. It stops short of an explicit 'use watchlist_add to add symbols' pointer or any preconditions (e.g. symbol must already exist in the list).

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