List all fiat currencies Transak supports, with per-currency payment methods, limits, and country restrictions. Public endpoint — safe to call without credentials. Use as a discovery step before rendering a funding flow.
AI agents call list_fiat_currencies to retrieve information from Mcp Afip without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries publicly available currency and payment method information with no side effects, no data modification, and no external state changes. It is explicitly documented as a safe public endpoint. The read-only nature and lack of authentication requirements confirm this as a Read category risk with low severity.
From the tool's definition Tool name is 'list_fiat_currencies' and description explicitly states it 'List[s] all fiat currencies' and is a 'Public endpoint — safe to call without credentials.' The verb 'list' is a classic Read operation.
Documented attack patterns abuse exactly the kind of access list_fiat_currencies gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for list_fiat_currencies:
{
"version": "1",
"default": "deny",
"tools": {
"list_fiat_currencies": {}
}
}list_fiat_currencies is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all fiat currencies Transak supports, with per-currency payment methods, limits, and country restrictions. Public endpoint — safe to call without credentials. Use as a discovery step before rendering a funding flow. It is categorised as a Read tool in the Mcp Afip MCP Server, which means it retrieves data without modifying state.
Register the Mcp Afip MCP server in PolicyLayer and add a rule for list_fiat_currencies: 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 Afip. Nothing to install.
list_fiat_currencies 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_fiat_currencies 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_fiat_currencies. 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_fiat_currencies is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Afip, 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 Afip tools catalogued and risk-classified — across an index of 43,000+ MCP servers.