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

With no annotations, the description does carry real behavioral weight by disclosing that this is a paid x402 call at $0.0030 USDC per invocation and giving the POST endpoint. It says nothing about failure modes, latency guarantees, or what the balance payload looks like, so the disclosure is partial rather than complete.

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 capability sentence is front-loaded and the pricing/execution block is compact and clearly separated by the '||' delimiter. Nearly every clause earns its place; the only filler is the vague 'Murah dan pantas'.

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 2-parameter read tool with no output schema and no annotations, the description covers what is returned (SOL, ETH, USDC balances) and the payment model. It omits return shape, numeric formatting/decimals, and behavior on an invalid or empty address, leaving gaps an agent would want closed.

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 100%, so both 'alamat' (base58 vs 0x format) and the 'rangkaian' enum are already documented. The description's mention of SOL vs ETH+USDC per chain adds a little mapping context but no syntax or format detail beyond the schema, so the baseline of 3 applies.

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+resource: read the SOL (Solana) or ETH + USDC (Base) balance for a single address. That is precise enough to distinguish it from a generic wallet inspector, but it never names or contrasts with siblings like periksa-dompet, which likely overlaps.

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?

Only "Murah dan pantas" (cheap and fast) hints at when to pick this over alternatives, and there are no exclusions or prerequisite notes. The agent must infer on its own whether periksa-dompet or banding-token would be the better choice for a related question.

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