shells_createShell

Create a Shell (sandbox) (POST /v1/shells/shells)

SERVERGenesis SOURCE@onesi/genesis-mcp

Medium RISK CLASS

Category Write

Parameters 22 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/onesi-genesis-mcp/shells-createshell.md

WHAT IT DOES

What shells_createShell does on Genesis

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

Parameter	Type	Required	Description
`body`	object	Yes	Launch options; the Shells facade validates them.
`idempotency_key`	string	Yes	Stable key (required); reuse it to replay instead of acting twice

Parameters from the server's own tool schema.

RISK

Why shells_createShell is rated Medium

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

Risk signalsAccepts raw HTML/template content (body)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs shells_createShell safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Genesis, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For shells_createShell, this is the rule to start with:

shells_createShell Rate-limited

shells_createShell 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": {
    "shells_createShell": {
      "limits": [
        {
          "counter": "shells_createshell_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Genesis, apply this rule, and every shells_createShell call is checked against it from then on.

FAQ

Questions about shells_createShell

What does the shells_createShell tool do? +

Create a Shell (sandbox) (POST /v1/shells/shells). It is categorised as a Write tool in the Genesis MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does shells_createShell accept? +

shells_createShell accepts 2 parameters: body, idempotency_key. Required: body, idempotency_key. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on shells_createShell? +

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

What risk level is shells_createShell? +

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

Can I rate-limit shells_createShell? +

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

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

shells_createShell is provided by the Genesis MCP server (@onesi/genesis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Genesis, and thousands of servers like it.

This server

All 1127 Genesis tools →

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The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →