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

Beyond the readOnlyHint/destructiveHint annotations, it discloses that funds sent to the returned addresses are credited to the user's own Hyperliquid account, that minimums, fees and arrival times accompany each address, and that no withdraw tool exists. The instruction "Give the user only these exact addresses" is an important anti-hallucination guard for a tool whose output is financial account identifiers.

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?

Front-loaded with the trigger condition, then output contents, then safety guarantees — three dense sentences with no filler. Every clause (including the 'no withdraw tool' note) carries information an agent needs.

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?

With no output schema and no parameters, the description carries the full burden of explaining return values, and it does: addresses, minimums, fees and arrival times per chain/asset. Safety posture, scope of crediting, and a usage guard against address fabrication are all covered.

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; the schema is trivially complete. The description's mention of supported chains and assets describes output content rather than parameters, which is appropriate but adds nothing to parameter semantics.

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 and resource — returns the caller's personal deposit addresses — and enumerates the exact chain/asset combinations (USDC/ETH on Arbitrum One, USDC/SOL on Solana). This clearly separates it from siblings like preview_deposit (which previews) and get_my_deposits (which lists past deposits).

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?

"Use this when the user asks how to deposit or fund their MCPify / Hyperliquid account" gives an explicit trigger condition, and "there is no withdraw tool" pre-empts a plausible misrouting. It stops short of naming the closest alternatives (preview_deposit for simulation, get_my_deposits for history), so the agent must infer those boundaries.

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