simulate-incoming
Simulate an incoming message from the messaging service (for testing)
This record as markdown: /tools/frontmcp/simulate-incoming.md
What simulate-incoming does on Frontmcp
AI agents invoke simulate-incoming to trigger actions in Frontmcp. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why simulate-incoming is rated High
This tool simulates an incoming message, which triggers execution of message-handling logic in the system. While described as a testing utility, it actively causes the system to process a fabricated message, potentially invoking handlers, workflows, or side effects. It falls under Execute because it triggers external operations whose effects depend on the arguments supplied.
From the tool's definition "Simulate an incoming message from the messaging service (for testing)" — triggers an external operation (message simulation) that executes processing logic within the messaging service
Attacks that exploit this kind of access
The rule that runs simulate-incoming safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Frontmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For simulate-incoming, this is the rule to start with:
simulate-incoming stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Frontmcp, apply this rule, and every simulate-incoming call is checked against it from then on.
Questions about simulate-incoming
Simulate an incoming message from the messaging service (for testing). It is categorised as a Execute tool in the Frontmcp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Front MCP server in PolicyLayer and add a rule for simulate-incoming: 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 Frontmcp. Nothing to install.
simulate-incoming is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the simulate-incoming 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 simulate-incoming. 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.
simulate-incoming is provided by the Front MCP server (agentfront/frontmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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