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

No annotations are present, so the description carries the burden. It implies a read-style lookup (returns accounts) and discloses the return envelope ('values' object) and a downstream workflow dependency, which is useful. It does not state authentication/permission requirements beyond the PIN or any rate/scope limits.

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-loads the core purpose in the first sentence, then workflow context, then param/return tags. Efficient overall, with only minor redundancy (the 'USDC/USDt' typo) and no wasted prose.

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 annotations, the description does explain the return shape and the prerequisite workflow, which covers the essentials for a read-style lookup. It still leaves the relationship to sibling fund tools and the wallet_fk format unexplained.

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 0%, so the description must compensate, and it does name both parameters. 'pin: The Netfluid wallet PIN' adds real meaning, but 'wallet_fk: The Netfluid wallet_fk' merely restates the parameter name and gives no format or provenance detail.

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 concrete outcome ('Returns Netfluid accounts on which USDC/USDT can be received'), which is clear enough to act on. However, the tool name 'fund_blockchain' implies a funding action while the description describes a query/list, and it does not distinguish this from siblings like customer_netfluid_fund_options or customer_netfluid_fund_sepa_and_ach.

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?

It provides workflow context ('A further step will be required to sell the USDC/USDT for ZAR before a wallet_transfer can take place'), which tells the agent this is a prerequisite step. It never states when to choose this over the other netfluid_fund_* variants, so selection guidance is only implied.

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