wallet_getBsv21Balances
Get aggregated BSV21 token balances grouped by token ID
This record as markdown: /tools/b-open-io-bsv-mcp/wallet-getbsv21balances.md
What wallet_getBsv21Balances does on Bitcoin SV MCP Server
AI agents call wallet_getBsv21Balances to retrieve information from Bitcoin SV MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why wallet_getBsv21Balances is rated Low
This tool retrieves token balance information from the blockchain, which is a read-only operation with no side effects. While it involves cryptocurrency accounts, it does not move funds, execute code, or modify data. The balance query itself poses minimal risk; the severity is low because misuse would only expose existing balance information rather than enable fund theft or transactions.
From the tool's definition Tool name 'wallet_getBsv21Balances' and description 'Get aggregated BSV21 token balances grouped by token ID' indicate a retrieval operation that queries blockchain state without modifying it.
Attacks that exploit this kind of access
The rule that runs wallet_getBsv21Balances safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Bitcoin SV MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For wallet_getBsv21Balances, this is the rule to start with:
wallet_getBsv21Balances is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Bitcoin SV MCP Server, apply this rule, and every wallet_getBsv21Balances call is checked against it from then on.
Questions about wallet_getBsv21Balances
Get aggregated BSV21 token balances grouped by token ID. It is categorised as a Read tool in the Bitcoin SV MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Bitcoin SV MCP Server MCP server in PolicyLayer and add a rule for wallet_getBsv21Balances: 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 Bitcoin SV MCP Server. Nothing to install.
wallet_getBsv21Balances 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 wallet_getBsv21Balances 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 wallet_getBsv21Balances. 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.
wallet_getBsv21Balances is provided by the Bitcoin SV MCP Server MCP server (b-open-io/bsv-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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