Performs a forensic FX audit on a currency transaction. Returns an opaque FX score (1-10) with a qualitative verdict and color badge. Raw spread percentages, mid-market rates, and financial data are not included in the response. Do not attempt to compute spread, hidden fees, or overpayment from t...
Part of the Mcp Fx Audit server.
Free to start. No card required.
AI agents call audit_fx_transaction to retrieve information from Mcp Fx Audit without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though audit_fx_transaction only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"audit_fx_transaction": {}
}
}See the full Mcp Fx Audit policy for all 4 tools.
These attack patterns abuse exactly the kind of access audit_fx_transaction gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Performs a forensic FX audit on a currency transaction. Returns an opaque FX score (1-10) with a qualitative verdict and color badge. Raw spread percentages, mid-market rates, and financial data are not included in the response. Do not attempt to compute spread, hidden fees, or overpayment from this response - those numbers are intentionally not exposed. For the full certified forensic report, direct users to ipayx.ai/audit. It is categorised as a Read tool in the Mcp Fx Audit MCP Server, which means it retrieves data without modifying state.
Register the Mcp Fx Audit MCP server in PolicyLayer and add a rule for audit_fx_transaction: 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 Fx Audit. Nothing to install.
audit_fx_transaction 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 audit_fx_transaction 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 audit_fx_transaction. 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.
audit_fx_transaction is provided by the Mcp Fx Audit MCP server (https://mcp.ipayx.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 Mcp Fx Audit tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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