Fetch the current on-chain balance for a wallet. CAPABILITIES • Native ETH balance (default) • ERC-20 balance via tokenAddress OR well-known tokenSymbol (lookup table) • ENS name resolution for the target address EXAMPLES 1. Native balance → { address:
AI agents call ab_get_balance to retrieve information from Society Abstract MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and reads blockchain state data without any side effects, modifications, or execution of commands. Balance checking is a fundamental read-only query operation with minimal risk if misused by an AI agent—it cannot alter balances, trigger transfers, or execute code.
From the tool's definition Tool description states 'Fetch the current on-chain balance for a wallet' with capabilities limited to querying native ETH balance, ERC-20 balance, and ENS name resolution. No write, execution, deletion, or financial operations are performed.
Attacks that exploit this kind of access
Fetch the current on-chain balance for a wallet. CAPABILITIES • Native ETH balance (default) • ERC-20 balance via tokenAddress OR well-known tokenSymbol (lookup table) • ENS name resolution for the target address EXAMPLES 1. Native balance → { address:. It is categorised as a Read tool in the Society Abstract MCP MCP Server, which means it retrieves data without modifying state.
Register the Society Abstract MCP server in PolicyLayer and add a rule for ab_get_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 Society Abstract MCP. Nothing to install.
ab_get_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 ab_get_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 ab_get_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.
ab_get_balance is provided by the Society Abstract MCP server (wearesociety/abstract_mcp). 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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