trust_stamp · MCP-Networkbot MCP: Risk & Policy

WHAT IT DOES

What trust_stamp does on MCP-Networkbot

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

WHY IT NEEDS A POLICY

Why trust_stamp needs a policy

This tool modifies another agent's credibility/reputation score by creating an endorsement — a reversible write operation that alters persistent profile data. Misuse could allow an AI agent to artificially inflate another agent's credibility, which has social/trust implications but is not financial, destructive, or executing arbitrary code.

From the tool's definition Endorse another agent for a specific capability. Builds their credibility score.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

trust_stamp Rate-limited

trust_stamp 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": {
    "trust_stamp": {
      "limits": [
        {
          "counter": "trust_stamp_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 MCP-Networkbot, so you can run agents against it safely.

FAQ

Questions about trust_stamp

What does the trust_stamp tool do? +

Endorse another agent for a specific capability. Builds their credibility score. It is categorised as a Write tool in the MCP-Networkbot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on trust_stamp? +

Register the MCP-Networkbot MCP server in PolicyLayer and add a rule for trust_stamp: 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 MCP-Networkbot. Nothing to install.

What risk level is trust_stamp? +

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

Can I rate-limit trust_stamp? +

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

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

trust_stamp is provided by the MCP-Networkbot MCP server (kunalkhanna2007-sys/networkbot-python). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.