Search for transactions with various criteria
AI agents call api_indexer_search_for_transactions to retrieve information from BNB Chain MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only operation that queries transaction data. It has no capability to modify, execute, or delete data, and poses minimal risk even if misused by an agent, as it only surfaces existing transaction information. The low severity reflects that search results alone cannot cause financial loss or system damage.
From the tool's definition Tool name contains 'search' and description states 'Search for transactions with various criteria' — a query operation that retrieves data without modifying it.
Documented attack patterns abuse exactly the kind of access api_indexer_search_for_transactions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and BNB Chain MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for api_indexer_search_for_transactions:
{
"version": "1",
"default": "deny",
"tools": {
"api_indexer_search_for_transactions": {}
}
}api_indexer_search_for_transactions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search for transactions with various criteria. It is categorised as a Read tool in the BNB Chain MCP MCP Server, which means it retrieves data without modifying state.
Register the BNB Chain MCP server in PolicyLayer and add a rule for api_indexer_search_for_transactions: 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 BNB Chain MCP. Nothing to install.
api_indexer_search_for_transactions 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 api_indexer_search_for_transactions 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 api_indexer_search_for_transactions. 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.
api_indexer_search_for_transactions is provided by the BNB Chain MCP server (nirholas/bnbchain-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 1240 BNB Chain MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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1240 BNB Chain MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.