// MCP TOOL REFERENCE

no_stop_departures

Upcoming departures for a StopPlace ID (e.g., 'NSR:StopPlace:58368').

Part of the Public Transport MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

mirodn/mcp-server-public-transport Execute Risk 3/5

// WHEN AI AGENTS USE THIS TOOL

AI agents invoke no_stop_departures to trigger processes or run actions in Public Transport. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.

// WHY ENFORCE A POLICY ON NO_STOP_DEPARTURES

no_stop_departures can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.

// RECOMMENDED POLICY

Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.

mirodn-mcp-server-public-transport.yaml

tools:
  no_stop_departures:
    rules:
      - action: allow
        rate_limit:
          max: 10
          window: 60
        validate:
          required_args: true

See the full Public Transport policy for all 12 tools.

// DETAILS

Tool Name no_stop_departures

Category Execute

MCP Server Public Transport MCP Server

Risk Level High

// MORE PUBLIC TRANSPORT TOOLS

Read be_get_departures Read be_get_vehicle Read be_search_connections Read be_search_stations Read ch_get_departures Read ch_nearby_stations Read ch_search_connections Read ch_search_stations

View all 12 tools →

// WHAT CAN GO WRONG

Agents calling execute-class tools like no_stop_departures have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER EXECUTE TOOLS ACROSS MCP SERVERS

Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

Agent Passport System — Cryptographic Identity for AI Agents commerce_preflight Agent Passport System — Cryptographic Identity for AI Agents execute_with_context Agent Passport System — Cryptographic Identity for AI Agents gateway_execute_approval Agent Passport System — Cryptographic Identity for AI Agents governance_360 Agent Passport System — Cryptographic Identity for AI Agents parse_governance_block_html AgentClear — API Marketplace for AI Agents call_service

// IN CONTEXT OF HIGH RISK

no_stop_departures is one of the high-risk operations in Public Transport. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.

// RELATED READING

// FAQ

What does the no_stop_departures tool do? +

Upcoming departures for a StopPlace ID (e.g., 'NSR:StopPlace:58368').. It is categorised as a Execute tool in the Public Transport MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on no_stop_departures? +

Add a rule in your Intercept YAML policy under the tools section for no_stop_departures. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Public Transport MCP server.

What risk level is no_stop_departures? +

no_stop_departures is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit no_stop_departures? +

Yes. Add a rate_limit block to the no_stop_departures 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.

How do I block no_stop_departures completely? +

Set action: deny in the Intercept policy for no_stop_departures. 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 no_stop_departures? +

no_stop_departures is provided by the Public Transport MCP server (mirodn/mcp-server-public-transport). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

no_stop_departures

Enforce policies on Public Transport