Get the token balance of a wallet address with USD value using SailFish as price oracle
AI agents call get_token_balance to retrieve information from EDUCHAIN Agent Kit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries wallet balance information and provides price data conversion to USD. It performs no side effects, makes no modifications, executes no code, and initiates no financial transactions. It is a simple data retrieval operation consistent with the Read category. The low severity reflects minimal blast radius—an AI agent misusing this would only retrieve balance data, which is informational only.
From the tool's definition Tool name 'get_token_balance' and description 'Get the token balance of a wallet address with USD value' indicate a query operation that retrieves data without modifying state or executing transactions.
Documented attack patterns abuse exactly the kind of access get_token_balance gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and EDUCHAIN Agent Kit, and nothing reaches the server without passing your rules. This is the rule we recommend for get_token_balance:
{
"version": "1",
"default": "deny",
"tools": {
"get_token_balance": {}
}
}get_token_balance is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the token balance of a wallet address with USD value using SailFish as price oracle. It is categorised as a Read tool in the EDUCHAIN Agent Kit MCP Server, which means it retrieves data without modifying state.
Register the EDUCHAIN Agent Kit MCP server in PolicyLayer and add a rule for get_token_balance: 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 EDUCHAIN Agent Kit. Nothing to install.
get_token_balance 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 get_token_balance 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 get_token_balance. 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.
get_token_balance is provided by the EDUCHAIN Agent Kit MCP server (sailfish-finance/educhain-ai-agent-kit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from EDUCHAIN Agent Kit, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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29 EDUCHAIN Agent Kit tools catalogued and risk-classified — across an index of 43,000+ MCP servers.