ingest_artifact · Mnemosyne MCP: Risk & Policy

WHAT IT DOES

What ingest_artifact does on Mnemosyne MCP

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

WHY IT NEEDS A POLICY

Why ingest_artifact needs a policy

The term 'ingest' typically implies reading external data and writing/importing it into a system — a Write operation. Given the server context (RDF file uploads, knowledge graph management), this likely uploads or imports an artifact into the knowledge graph. However, the empty description significantly lowers confidence.

From the tool's definition Tool name 'ingest_artifact' suggests importing/uploading data into the system; description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ingest_artifact Rate-limited

ingest_artifact 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_artifact": {
      "limits": [
        {
          "counter": "ingest_artifact_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 Mnemosyne MCP, so you can run agents against it safely.

FAQ

Questions about ingest_artifact

What does the ingest_artifact tool do? +

ingest_artifact. It is categorised as a Write tool in the Mnemosyne 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 ingest_artifact? +

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

What risk level is ingest_artifact? +

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

Can I rate-limit ingest_artifact? +

Yes. Add a rate_limit block to the ingest_artifact 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_artifact completely? +

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

ingest_artifact is provided by the Mnemosyne MCP server (sophia-labs/mnemosyne-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.