Update the settings of a specific application, such as health check configurations. This allows you to modify the application
AI agents use update-application to create or update resources in Coolify MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Coolify MCP Server environment.
This tool modifies application configuration settings (e.g., health check configurations) without deleting data or executing arbitrary commands. It is reversible—settings can be updated again.
From the tool's definition Tool name 'update-application' and description 'Update the settings of a specific application' and 'allows you to modify the application' indicate the tool creates or modifies data reversibly.
Documented attack patterns abuse exactly the kind of access update-application gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Coolify MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for update-application:
{
"version": "1",
"default": "deny",
"tools": {
"update-application": {
"limits": [
{
"counter": "update-application_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}update-application stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Update the settings of a specific application, such as health check configurations. This allows you to modify the application. It is categorised as a Write tool in the Coolify MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Coolify MCP Server MCP server in PolicyLayer and add a rule for update-application: 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 Coolify MCP Server. Nothing to install.
update-application is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the update-application 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 update-application. 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.
update-application is provided by the Coolify MCP Server MCP server (stumason/coolify-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Coolify MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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11 Coolify MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.