docker_push · Yaver MCP: Risk & Policy

WHAT IT DOES

What docker_push does on Yaver

AI agents use docker_push to create or update resources in Yaver — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Yaver environment.

PARAMETERS

Parameter	Type	Required	Description
`image`	string	Yes

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why docker_push needs a policy

An AI agent can call docker_push faster than any human can review — one bad instruction and it creates or modifies resources in Yaver by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

docker_push Rate-limited

docker_push 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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Yaver, so you can run agents against it safely.

FAQ

Questions about docker_push

What does the docker_push tool do? +

Push a Docker image to registry. It is categorised as a Write tool in the Yaver MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does docker_push accept? +

docker_push accepts 1 parameter: image. Required: image. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on docker_push? +

Register the Yaver MCP server in PolicyLayer and add a rule for docker_push: 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 Yaver. Nothing to install.

What risk level is docker_push? +

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

Can I rate-limit docker_push? +

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

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

docker_push is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.