create-schema | PolicyLayer

WHAT IT DOES

What create-schema does on RSK MCP Server - Rootstock Blockchain Tools

AI agents use create-schema to create or update resources in RSK MCP Server - Rootstock Blockchain Tools — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your RSK MCP Server - Rootstock Blockchain Tools environment.

WHY IT NEEDS A POLICY

Why create-schema needs a policy

The tool writes data (a schema definition) to the RSK blockchain. While attestation schemas are governance/configuration artifacts, they are not financial transactions, code execution, or destructive. The operation is reversible (schemas can be updated or deprecated).

From the tool's definition 'Create a new attestation schema on Rootstock network' — this tool creates and persists a new schema object on the blockchain, a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create-schema Rate-limited

create-schema 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": {
    "create-schema": {
      "limits": [
        {
          "counter": "create-schema_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 RSK MCP Server - Rootstock Blockchain Tools, so you can run agents against it safely.

FAQ

Questions about create-schema

What does the create-schema tool do? +

Create a new attestation schema on Rootstock network. It is categorised as a Write tool in the RSK MCP Server - Rootstock Blockchain Tools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-schema? +

Register the RSK MCP Server - Rootstock Blockchain Tools MCP server in PolicyLayer and add a rule for create-schema: 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 RSK MCP Server - Rootstock Blockchain Tools. Nothing to install.

What risk level is create-schema? +

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

Can I rate-limit create-schema? +

Yes. Add a rate_limit block to the create-schema 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 create-schema completely? +

Set action: deny in the PolicyLayer policy for create-schema. 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 create-schema? +

create-schema is provided by the RSK MCP Server - Rootstock Blockchain Tools MCP server (rsksmart/rsk-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.