Get the holder distribution for any Hedera token (fungible or NFT) including top holders, concentration metrics, and whale analysis. Costs 0.2 HBAR.
AI agents call token_holders 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.
token_holders retrieves token holder information from the Hedera blockchain. This is a pure data query with no side effects, state modifications, or irreversible actions. Although the server involves financial assets (HBAR payments) and blockchain operations, the tool itself only reads and analyzes existing data. The financial cost (0.2 HBAR per call) is a metering mechanism, not the tool's function.
From the tool's definition Tool description states 'Get the holder distribution' and 'top holders, concentration metrics, and whale analysis' — all read-only query operations that retrieve and display blockchain data without modifying state or executing external operations.
Attacks that exploit this kind of access
Get the holder distribution for any Hedera token (fungible or NFT) including top holders, concentration metrics, and whale analysis. Costs 0.2 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 token_holders: 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.
token_holders 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 token_holders 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 token_holders. 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.
token_holders 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.
token_holders is one line of Hedera Toolbox's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →