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Voicescape — on-chain identity and tipping for AI agents

by io.github.VoiceScapee
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Get NFT collection

get_nft_collection
Read-onlyIdempotent

Read any HTS NFT collection live from the Hedera mirror node: token info (name, symbol, treasury, supply) plus the newest minted serials with artwork resolved through each NFT's wallet-readable metadata JSON and a HashScan link per NFT. Read-only — no wallet, no signature, no cost.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "token_id": "<token_id>"
    },
    "name": "get_nft_collection"
  }
}

Input Schema

NameRequiredDescriptionDefault
token_idYesHTS token id, 0.0.x

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A3.9/5.0
Behavior4/5

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

The description goes beyond the readOnly/idempotent/non-destructive annotations by disclosing the data source (mirror node), the safety profile (no wallet, no signature, no cost), and the shape of what is returned. It is mildly redundant on 'read-only' but adds real operational context; it does not mention paging limits on 'newest serials' or error behavior for unknown token ids.

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

Conciseness4/5

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

Front-loaded with the action and the resource, then a single dense clause listing outputs, closing with the safety note. No filler sentences, though the mid-sentence stack of output details is heavy for one line.

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

Completeness4/5

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

With no output schema, the description carries the return-value burden and does so reasonably by listing token info, serials, metadata artwork resolution, and the HashScan link. An agent can call this correctly from the single required param; only detail on pagination/limits is absent.

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% and the single parameter (token_id, 'HTS token id, 0.0.x') is fully documented in the schema itself. The description does not reference token_id or add format/semantic detail beyond it, so baseline 3 applies.

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?

States a specific verb (Read) and resource (HTS NFT collection) and enumerates exactly what is returned: token info (name, symbol, treasury, supply) plus newest minted serials with metadata and a HashScan link. This clearly separates it from sibling prepare_nft_collection, which is a write/preparation tool.

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

Usage Guidelines3/5

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

The word 'Read' and 'live from the Hedera mirror node' imply a read-inspection use case, but there is no explicit when-to-use vs. alternative guidance and no named sibling to differentiate against. Usage is implied rather than 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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