MAS reference exchange rates for SGD against major currencies. Use this tool when you need Singapore dollar (SGD) exchange rates for financial calculations, international transfers, or business invoicing.
Part of the Sg Finance Data MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call get_mas_exchange_rates to retrieve information from Sg Finance Data 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 get_mas_exchange_rates 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.
tools:
get_mas_exchange_rates:
rules:
- action: allowSee the full Sg Finance Data policy for all 4 tools.
Agents calling read-class tools like get_mas_exchange_rates have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
MAS reference exchange rates for SGD against major currencies. Use this tool when you need Singapore dollar (SGD) exchange rates for financial calculations, international transfers, or business invoicing.. It is categorised as a Read tool in the Sg Finance Data MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for get_mas_exchange_rates. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Sg Finance Data MCP server.
get_mas_exchange_rates 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_mas_exchange_rates 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 get_mas_exchange_rates. 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_mas_exchange_rates is provided by the Sg Finance Data MCP server (vdineshk/sg-finance-data-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