Calculate reverse charge GST on imported services from overseas suppliers. Under Singapore's reverse charge mechanism, GST-registered businesses must account for GST on imported B2B services. Returns GST payable, input tax claim eligibility, and net cost. Use this tool when a business imports ser...
Part of the Sg Gst Calculator MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents use calculate_reverse_charge to initiate financial transactions through Sg Gst Calculator. Financial operations involve real money and are irreversible once processed. Intercept blocks financial tools by default, requiring explicit human approval with transaction-level limits to prevent unauthorised spending.
calculate_reverse_charge moves real money. Without a policy, an autonomous agent could initiate transactions that drain accounts or exceed budgets. Intercept blocks financial tools by default, requiring human-in-the-loop approval with configurable spending limits per transaction and per time window.
Financial tools involve real money. Block by default and require explicit human approval before enabling.
tools:
calculate_reverse_charge:
rules:
- action: deny
reason: "Requires human approval"See the full Sg Gst Calculator policy for all 4 tools.
Agents calling financial-class tools like calculate_reverse_charge have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Financial risk category across the catalogue. The same policy patterns (deny, require_approval) apply to each.
calculate_reverse_charge is one of the critical-risk operations in Sg Gst Calculator. For the full severity-focused view — only the critical-risk tools with their recommended policies — see the breakdown for this server, or browse all critical-risk tools across every MCP server.
Calculate reverse charge GST on imported services from overseas suppliers. Under Singapore's reverse charge mechanism, GST-registered businesses must account for GST on imported B2B services. Returns GST payable, input tax claim eligibility, and net cost. Use this tool when a business imports services from overseas and needs to determine GST obligations.. It is categorised as a Financial tool in the Sg Gst Calculator MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Add a rule in your Intercept YAML policy under the tools section for calculate_reverse_charge. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Sg Gst Calculator MCP server.
calculate_reverse_charge is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the calculate_reverse_charge rule in your Intercept 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 Intercept policy for calculate_reverse_charge. 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.
calculate_reverse_charge is provided by the Sg Gst Calculator MCP server (vdineshk/sg-gst-calculator-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept