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

The annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false. The description adds useful behavioral context beyond annotations by explicitly stating this does not create a session or transaction, which clarifies the operational boundary relative to sibling tools. The 'fee-inclusive' detail also adds meaningful behavioral semantics.

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 compact and front-loaded: the core purpose is in the first sentence, and the critical side-effect disclaimer is in the second. Every sentence earns its place without unnecessary detail.

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 simple read-only quote tool with clear annotations and a small schema, the description is largely complete. It would benefit from mentioning what the returned quote contains or that quote validity/expiration may apply, but the absence is not critical for a non-destructive quote operation.

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 compensate, but it does not mention amount_usd at all. It does add some meaning by mapping destination_chain to 'Base or Arbitrum ETH' and implicitly identifying the source as Solana SOL, but this is partial compensation for the missing parameter guidance.

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 states a specific verb ('Get') and a specific resource: a fee-inclusive Solana SOL to Base or Arbitrum ETH quote. It also explicitly distinguishes the tool from transaction/session-creating siblings by saying it does not create a session or transaction, so an agent can identify the right tool.

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?

The description implies the tool is for obtaining a quote without side effects, and it tells the agent what the tool does not do. However, it does not name alternatives or provide explicit when-to-use versus when-not-to-use guidance, such as 'use before create_session' or 'use instead of prepare_*_action'.

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