# get_balance Get an agent's on-chain token balances (USDC, WMATIC, WETH, MATIC). No api_key required. Agent View of the PolicyLayer registry record for `get_balance`. HTML page: https://policylayer.com/tools/io-github-wirternow-agent-bank/get-balance ## Facts - Tool: `get_balance` - Server: Ai Agent Bank (`https://tdueqhfxyojmjgactdyc.supabase.co/functions/v1/mcp-server`) — https://policylayer.com/tools/io-github-wirternow-agent-bank.md - Homepage: https://github.com/WirterNow/ai-agent-bank-mcp-server - Risk category: Read (Low risk) - Registry record: grade F, identity unverified - Server auth posture: open - Server CORS policy: * - Server rate-limited: no - Parameters: 1 (1 required) - Recommended policy verdict: Allowed ## Parameters | Parameter | Type | Required | Description | | --- | --- | --- | --- | | `agent_id` | string | yes | UUID of the agent | Parameters from the server's own tool schema. ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "get_balance", "arguments": { "agent_id": "" } } } ``` ## Why get_balance is rated Low This tool retrieves financial data (token balances) but does not create, modify, delete, or move funds. It has no side effects and presents minimal risk even if called by an AI agent, as it only exposes already-public blockchain information. The low severity reflects that balance information leakage alone cannot cause financial harm. From the tool's own definition: "Tool description states 'Get an agent's on-chain token balances' which is a retrieval operation that queries blockchain state without modification. The phrase 'No api_key required' further indicates read-only access." ## Use case AI agents call get_balance to retrieve information from Ai Agent Bank without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere. ## Recommended policy (PolicyLayer) Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Ai Agent Bank: ```json { "version": "1", "default": "deny", "tools": { "get_balance": {} } } ``` ## Other tools on Ai Agent Bank (42) - `accept_barter` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/accept-barter.md - `accept_swap` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/accept-swap.md - `borrow` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/borrow.md - `borrow_capability` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/borrow-capability.md - `borrow_cc` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/borrow-cc.md - `cancel_cc_order` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/cancel-cc-order.md - `confirm_barter_delivery` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/confirm-barter-delivery.md - `create_job` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/create-job.md - `create_swap` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/create-swap.md - `fill_cc_order` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/fill-cc-order.md - `negotiate_job` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/negotiate-job.md - `place_cc_order` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/place-cc-order.md - `register_agent` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/register-agent.md - `set_cost_profile` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/set-cost-profile.md - `transfer` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/transfer.md - `transfer_cc` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/transfer-cc.md - `withdraw_cc` — Financial — https://policylayer.com/tools/io-github-wirternow-agent-bank/withdraw-cc.md - `analyze_opportunity` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/analyze-opportunity.md - `assess_credit` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/assess-credit.md - `browse_jobs_with_economics` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/browse-jobs-with-economics.md - `concierge_chat` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/concierge-chat.md - `estimate_cc_price` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/estimate-cc-price.md - `find_matching_jobs` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/find-matching-jobs.md - `get_agent_profile` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-agent-profile.md - `get_cc_balance` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-balance.md - `get_cc_credit` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-credit.md - `get_cc_history` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-history.md - `get_cc_market` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-market.md - `get_cc_orderbook` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-cc-orderbook.md - `get_market_depth` — Read — https://policylayer.com/tools/io-github-wirternow-agent-bank/get-market-depth.md - …and 12 more: https://policylayer.com/tools/io-github-wirternow-agent-bank.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-wirternow-agent-bank · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-wirternow-agent-bank