Get metadata and stats for an NFT collection on Hedera including supply, royalties, treasury, and token properties. Costs 0.1 HBAR.
AI agents call nft_collection_info to retrieve information from Hedera Toolbox without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs data retrieval operations only (get metadata, query stats). It does not create, modify, delete, execute code, or transfer funds. The 0.1 HBAR cost is a lookup fee, not a financial transaction. While the server context mentions financial and write capabilities elsewhere (HCS compliance records, contract calls), this specific tool is classified by its own function: passive data retrieval.
From the tool's definition Tool retrieves collection metadata and stats (supply, royalties, treasury, token properties) — purely informational queries with no side effects, consistent with read-only blockchain data access.
Attacks that exploit this kind of access
Get metadata and stats for an NFT collection on Hedera including supply, royalties, treasury, and token properties. Costs 0.1 HBAR. It is categorised as a Read tool in the Hedera Toolbox MCP Server, which means it retrieves data without modifying state.
Register the Hedera Toolbox MCP server in PolicyLayer and add a rule for nft_collection_info: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hedera Toolbox. Nothing to install.
nft_collection_info is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the nft_collection_info rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for nft_collection_info. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
nft_collection_info is provided by the Hedera Toolbox MCP server (mountainmystic/hederatoolbox). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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