Create a new group in your Pinata account to organize files
AI agents use createGroup to create or update resources in Pinata MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Pinata MCP environment.
This tool creates a new group resource in the user's Pinata account, which is a reversible write operation. It does not retrieve data (Read), execute code or external operations (Execute), permanently delete anything (Destructive), nor involve financial transactions (Financial). The blast radius is minimal—a miscreated group can be deleted and causes no data loss or operational disruption.
From the tool's definition Tool name 'createGroup' and description 'Create a new group in your Pinata account to organize files' explicitly indicates creation of a new organizational resource.
Documented attack patterns abuse exactly the kind of access createGroup gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pinata MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for createGroup:
{
"version": "1",
"default": "deny",
"tools": {
"createGroup": {
"limits": [
{
"counter": "creategroup_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}createGroup 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.
Free to start. No card required.
Create a new group in your Pinata account to organize files. It is categorised as a Write tool in the Pinata MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Pinata MCP server in PolicyLayer and add a rule for createGroup: 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 Pinata MCP. Nothing to install.
createGroup 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 createGroup 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 createGroup. 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.
createGroup is provided by the Pinata MCP server (pinatacloud/pinata-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Pinata MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
35 Pinata MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.