Estimate referral fee + FBA fees for selling an ASIN at a given price. Useful before creating a listing or when repricing.
AI agents call get_my_fees_estimate_for_asin 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 estimated fee information for a given product and price point. It performs a calculation and returns data to inform decision-making, but does not create, modify, delete, or execute any irreversible operations. The use case ('before creating a listing or when repricing') confirms it is consultative rather than action-taking. No financial commitment or transaction is made by calling this tool.
From the tool's definition Tool name and description indicate it 'Estimate[s]' and is 'Useful before creating' — it performs a read-only calculation/query of fee estimates with no side effects or data modification.
Documented attack patterns abuse exactly the kind of access get_my_fees_estimate_for_asin 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 get_my_fees_estimate_for_asin:
{
"version": "1",
"default": "deny",
"tools": {
"get_my_fees_estimate_for_asin": {}
}
} get_my_fees_estimate_for_asin is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Estimate referral fee + FBA fees for selling an ASIN at a given price. Useful before creating a listing or when repricing. 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 get_my_fees_estimate_for_asin: 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.
get_my_fees_estimate_for_asin 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 get_my_fees_estimate_for_asin 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 get_my_fees_estimate_for_asin. 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.
get_my_fees_estimate_for_asin 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.
Free to start. No card required.
1300 Mcp Afip tools catalogued and risk-classified — across an index of 43,000+ MCP servers.