api_indexer_lookup_asset_balances

THE RISK

Low Risk

Why api_indexer_lookup_asset_balances needs a policy

This tool queries blockchain data to retrieve asset balance information. It performs read-only lookups without creating, modifying, executing, or deleting any data. The blast radius of misuse is minimal—an agent could only retrieve publicly available blockchain information that would be accessible through other means.

From the tool's definition Tool name contains 'lookup' and description states 'Get accounts holding this asset and their balances' — a pure data retrieval operation with no modification or execution capabilities.

Documented attack patterns abuse exactly the kind of access api_indexer_lookup_asset_balances gives an agent:

POLICY

How to control api_indexer_lookup_asset_balances

PolicyLayer is an MCP gateway — it sits between your AI agents and Algorand MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for api_indexer_lookup_asset_balances:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "api_indexer_lookup_asset_balances": {}
  }
}

api_indexer_lookup_asset_balances is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Algorand MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Algorand MCP tools

Financial alpha_amend_order Edit an existing unfilled Alpha Arcade order in-place (change price, quantity, or slippage Financial alpha_cancel_order Cancel an open Alpha Arcade order. Requires escrowAppId and orderOwner. Refunds USDC/token Financial api_ultrade_market_cancel_orders Cancel multiple open orders Financial api_haystack_execute_swap Execute an optimized token swap via Haystack Router — gets the best route across multiple Financial api_ultrade_wallet_withdraw Withdraw token Financial api_ultrade_wallet_withdraw_message Generate message from the withdrawal data Financial make_asset_transfer_txn Create an asset transfer transaction Financial alpha_claim Claim USDC from a resolved Alpha Arcade market by redeeming outcome tokens. Winning = 1:1

All 172 Algorand MCP tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

Roll out MCP under one policy → Per-person scoped tokens, one central policy, and full audit across every server your team connects.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about api_indexer_lookup_asset_balances

What does the api_indexer_lookup_asset_balances tool do? +

Get accounts holding this asset and their balances. It is categorised as a Read tool in the Algorand MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on api_indexer_lookup_asset_balances? +

Register the Algorand MCP server in PolicyLayer and add a rule for api_indexer_lookup_asset_balances: 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 Algorand MCP. Nothing to install.

What risk level is api_indexer_lookup_asset_balances? +

api_indexer_lookup_asset_balances is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit api_indexer_lookup_asset_balances? +

Yes. Add a rate_limit block to the api_indexer_lookup_asset_balances 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.

How do I block api_indexer_lookup_asset_balances completely? +

Set action: deny in the PolicyLayer policy for api_indexer_lookup_asset_balances. 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.

What MCP server provides api_indexer_lookup_asset_balances? +

api_indexer_lookup_asset_balances is provided by the Algorand MCP server (goplausible/algorand-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Algorand MCP tool call.

Start from Algorand MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →