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decentrathai

Zcash MCP Server

by decentrathai

get_balance

Retrieve the private shielded ZEC balance for a Zcash z-address, displaying only the shielded amount.

Instructions

Get the current shielded balance in ZEC. Shows only the private (shielded) balance.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
addressNoOptional: specific z-address to check balance for
Behavior2/5

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It states the tool gets a shielded balance but does not reveal what happens if no address is provided (e.g., returns all balances), required authentication, rate limits, or any side effects. For a read operation, basic transparency is missing.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, no fluff, front-loaded with key information. Every word is purposeful and efficiently conveys the tool's function.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (one optional param, no output schema), the description is adequate but incomplete. It does not explain the return format or behavior when no address is provided. The mention of 'ZEC' and 'shielded balance' is helpful, but more detail would improve completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description adds minimal context beyond the schema, merely repeating that the address is optional and for a z-address. The phrase 'shows only the private (shielded) balance' provides some interpretation but does not compensate for missing parameter details.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the tool retrieves the current shielded balance in ZEC, distinguishing it from siblings like get_price and get_transactions. It specifies that it shows only the private (shielded) balance, providing a specific verb and resource.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit when-to-use or when-not-to-use guidance. While it mentions 'only the private (shielded) balance,' it does not clarify when to use this tool versus other balance-related tools (if any) or suggest alternatives. No prerequisites or exclusions are stated.

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

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