stape_container_proxy_files

THE RISK

Medium Risk

Why stape_container_proxy_files needs a policy

The tool supports reading (getting) and writing (updating/replacing) proxy files for a container. Since updating/replacing is the most severe action described, it falls under Write. Replacing all proxy files could have significant impact on container behavior, warranting medium severity.

From the tool's definition 'managing container proxy files', 'updating/replacing all proxy files for a container'

Documented attack patterns abuse exactly the kind of access stape_container_proxy_files gives an agent:

POLICY

How to control stape_container_proxy_files

PolicyLayer is an MCP gateway — it sits between your AI agents and Stape MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for stape_container_proxy_files:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "stape_container_proxy_files": {
      "limits": [
        {
          "counter": "stape_container_proxy_files_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

stape_container_proxy_files 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.

Create a free account and register Stape MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Stape MCP Server tools

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All 18 Stape MCP Server tools →

Write tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about stape_container_proxy_files

What does the stape_container_proxy_files tool do? +

Comprehensive tool for managing container proxy files. Supports getting proxy files and updating/replacing all proxy files for a container. Use the. It is categorised as a Write tool in the Stape MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on stape_container_proxy_files? +

Register the Stape MCP Server MCP server in PolicyLayer and add a rule for stape_container_proxy_files: 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 Stape MCP Server. Nothing to install.

What risk level is stape_container_proxy_files? +

stape_container_proxy_files is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit stape_container_proxy_files? +

Yes. Add a rate_limit block to the stape_container_proxy_files 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 stape_container_proxy_files completely? +

Set action: deny in the PolicyLayer policy for stape_container_proxy_files. 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 stape_container_proxy_files? +

stape_container_proxy_files is provided by the Stape MCP Server MCP server (stape-io/stape-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Stape MCP Server tool call.

Start from Stape MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →