Calculate Singapore CPF contributions for an employee given salary, age, and citizenship status. Returns employee/employer contributions, account allocations (OA/SA/MA), take-home pay, and total employer cost. Use this tool when you need to compute CPF for payroll, hiring cost analysis, or compen...
Part of the Sg Cpf Calculator server.
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AI agents call calculate_cpf to retrieve information from Sg Cpf Calculator 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 calculate_cpf 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": {
"calculate_cpf": {}
}
}See the full Sg Cpf Calculator policy for all 4 tools.
These attack patterns abuse exactly the kind of access calculate_cpf 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.
Calculate Singapore CPF contributions for an employee given salary, age, and citizenship status. Returns employee/employer contributions, account allocations (OA/SA/MA), take-home pay, and total employer cost. Use this tool when you need to compute CPF for payroll, hiring cost analysis, or compensation planning in Singapore.. It is categorised as a Read tool in the Sg Cpf Calculator MCP Server, which means it retrieves data without modifying state.
Register the Sg Cpf Calculator MCP server in PolicyLayer and add a rule for calculate_cpf: 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 Sg Cpf Calculator. Nothing to install.
calculate_cpf 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 calculate_cpf 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 calculate_cpf. 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_cpf is provided by the Sg Cpf Calculator MCP server (vdineshk/sg-cpf-calculator-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 Sg Cpf Calculator tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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