ingest_event · Elephantasm MCP: Risk & Policy

WHAT IT DOES

What ingest_event does on Elephantasm

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

WHY IT NEEDS A POLICY

Why ingest_event needs a policy

This tool writes new data (an interaction event) to a persistent memory store. It is reversible in principle (the record is created, not destroyed), so Write is the appropriate category. Misuse could pollute the agent's long-term memory with false or manipulative events, giving it medium severity.

From the tool's definition 'Record an interaction event for future memory synthesis' — creates/writes a new event record persistently

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ingest_event Rate-limited

ingest_event 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": {
    "ingest_event": {
      "limits": [
        {
          "counter": "ingest_event_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 Elephantasm, so you can run agents against it safely.

FAQ

Questions about ingest_event

What does the ingest_event tool do? +

Record an interaction event for future memory synthesis. It is categorised as a Write tool in the Elephantasm MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ingest_event? +

Register the Elephantasm MCP server in PolicyLayer and add a rule for ingest_event: 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 Elephantasm. Nothing to install.

What risk level is ingest_event? +

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

Can I rate-limit ingest_event? +

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

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

ingest_event is provided by the Elephantasm MCP server (kaminocorp/elephantasm-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.