lta_bus_arrivals

Get real-time bus arrival estimates for an LTA bus stop code.

SERVERMcp Singapore SOURCE@olano/mcp-singapore

Low RISK CLASS

Category Read

Parameters 21 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/olano-mcp-singapore/lta-bus-arrivals.md

WHAT IT DOES

What lta_bus_arrivals does on Mcp Singapore

AI agents call lta_bus_arrivals to retrieve information from Mcp Singapore without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`busStopCode`	string	Yes
`serviceNumber`	string	—

Parameters from the server's own tool schema.

RISK

Why lta_bus_arrivals is rated Low

Even though lta_bus_arrivals only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs lta_bus_arrivals safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Singapore, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For lta_bus_arrivals, this is the rule to start with:

lta_bus_arrivals Allowed

lta_bus_arrivals is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "lta_bus_arrivals": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Singapore, apply this rule, and every lta_bus_arrivals call is checked against it from then on.

FAQ

Questions about lta_bus_arrivals

What does the lta_bus_arrivals tool do? +

Get real-time bus arrival estimates for an LTA bus stop code. It is categorised as a Read tool in the Mcp Singapore MCP Server, which means it retrieves data without modifying state.

What parameters does lta_bus_arrivals accept? +

lta_bus_arrivals accepts 2 parameters: busStopCode, serviceNumber. Required: busStopCode. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on lta_bus_arrivals? +

Register the Mcp Singapore MCP server in PolicyLayer and add a rule for lta_bus_arrivals: 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 Singapore. Nothing to install.

What risk level is lta_bus_arrivals? +

lta_bus_arrivals is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit lta_bus_arrivals? +

Yes. Add a rate_limit block to the lta_bus_arrivals 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.

How do I block lta_bus_arrivals completely? +

Set action: deny in the PolicyLayer policy for lta_bus_arrivals. 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.

What MCP server provides lta_bus_arrivals? +

lta_bus_arrivals is provided by the Mcp Singapore MCP server (@olano/mcp-singapore). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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