Get all erc20 tokens for an EVM address, the information includes the token name, symbol, contract address, decimals and balance. Only Wrapped Flow(WFLOW), Trump(TRUMP), HotCocoa, Gwendolion, Pawderick, Catseye are supported. Note: FLOW is not ERC20 token, you should use evm_tool to get the balan...
AI agents call get_erc20_tokens to retrieve information from Flow MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a data retrieval operation that queries ERC20 token information for a given address. It has no side effects, does not execute code, does not modify data, and does not move funds. The severity is low because the information returned is blockchain-public data with no blast radius if queried by an AI agent.
From the tool's definition Tool description states it 'Get all erc20 tokens for an EVM address' and 'includes the token name, symbol, contract address, decimals and balance.' These are read-only operations that retrieve and query data without modifying state.
Attacks that exploit this kind of access
Get all erc20 tokens for an EVM address, the information includes the token name, symbol, contract address, decimals and balance. Only Wrapped Flow(WFLOW), Trump(TRUMP), HotCocoa, Gwendolion, Pawderick, Catseye are supported. Note: FLOW is not ERC20 token, you should use evm_tool to get the balance of FLOW. It is categorised as a Read tool in the Flow MCP MCP Server, which means it retrieves data without modifying state.
Register the Flow MCP server in PolicyLayer and add a rule for get_erc20_tokens: 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 Flow MCP. Nothing to install.
get_erc20_tokens 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_erc20_tokens 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_erc20_tokens. 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_erc20_tokens is provided by the Flow MCP server (outblock/flow-mcp-monorepo). 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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