post_task · Tenzro Ledger MCP: Risk & Policy

WHAT IT DOES

What post_task does on Tenzro Ledger MCP

AI agents use post_task 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 post_task needs a policy

The tool creates/posts new data (a task) in a marketplace system, making it a Write operation. Severity is medium because posting tasks could enable spam, misleading job postings, or resource waste, but lacks the irreversibility of Destructive actions or the financial obligation of Financial transactions.

From the tool's definition Tool description states 'Post a new task to the task marketplace' — a creation operation that modifies marketplace data by adding a new entry.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

post_task Rate-limited

post_task 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": {
    "post_task": {
      "limits": [
        {
          "counter": "post_task_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 post_task

What does the post_task tool do? +

Post a new task to the task marketplace. 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 post_task? +

Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for post_task: 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 post_task? +

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

Can I rate-limit post_task? +

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

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

post_task 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.