List available funding sources (bank accounts, etc.)
AI agents call list_funding_sources to retrieve information from Mcp Ap2 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves or queries existing funding source information without side effects. While the data involved relates to financial accounts (which could be sensitive), the tool itself performs no financial transactions, does not move money, and cannot commit financial obligations. It is a read-only operation, making it the safest category despite the financial domain context.
From the tool's definition The tool is named 'list_funding_sources' and described as 'List available funding sources (bank accounts, etc.)' — the verb 'list' and the retrieval-only nature indicate a query operation with no modification, creation, or deletion of data.
Documented attack patterns abuse exactly the kind of access list_funding_sources gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for list_funding_sources:
{
"version": "1",
"default": "deny",
"tools": {
"list_funding_sources": {}
}
}list_funding_sources is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List available funding sources (bank accounts, etc.). It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.
Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for list_funding_sources: 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 Mcp Ap2. Nothing to install.
list_funding_sources 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 list_funding_sources 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 list_funding_sources. 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.
list_funding_sources is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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1300 Mcp Ap2 tools catalogued and risk-classified — across an index of 43,000+ MCP servers.