storage_store_object · Tenzro Ledger MCP: Risk & Policy

WHAT IT DOES

What storage_store_object does on Tenzro Ledger MCP

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

WHY IT NEEDS A POLICY

Why storage_store_object needs a policy

This tool writes/uploads data to a storage provider. It creates new stored objects, which is a reversible write operation (objects can typically be deleted later). Erasure coding is a storage redundancy mechanism, not destructive. The blast radius is medium since an AI agent could store large or sensitive objects, but it doesn't delete or overwrite existing data.

From the tool's definition Store an object on this node's storage provider with erasure coding

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

storage_store_object Rate-limited

storage_store_object 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": {
    "storage_store_object": {
      "limits": [
        {
          "counter": "storage_store_object_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 Tenzro Ledger MCP, so you can run agents against it safely.

FAQ

Questions about storage_store_object

What does the storage_store_object tool do? +

Store an object on this node's storage provider with erasure coding. It is categorised as a Write tool in the Tenzro Ledger MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on storage_store_object? +

Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for storage_store_object: 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 Tenzro Ledger MCP. Nothing to install.

What risk level is storage_store_object? +

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

Can I rate-limit storage_store_object? +

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

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

storage_store_object is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

storage_store_object is one line of Tenzro Ledger's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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