graphiti_add_episode · Garza Home MCP: Risk & Policy

WHAT IT DOES

What graphiti_add_episode does on Garza Home MCP

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

WHY IT NEEDS A POLICY

Why graphiti_add_episode needs a policy

This tool creates new episodes in a knowledge graph, which is a reversible write operation. It modifies data by insertion but does not execute arbitrary code, delete data irreversibly, move money, or have destructive side effects.

From the tool's definition Tool name 'graphiti_add_episode' and description 'Add episode' indicate creation of a new data record in the Graphiti knowledge graph system. The verb 'add' is explicitly a write operation that creates/inserts new data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

graphiti_add_episode Rate-limited

graphiti_add_episode 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": {
    "graphiti_add_episode": {
      "limits": [
        {
          "counter": "graphiti_add_episode_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Garza Home MCP, so you can run agents against it safely.

FAQ

Questions about graphiti_add_episode

What does the graphiti_add_episode tool do? +

Add episode. It is categorised as a Write tool in the Garza Home 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 graphiti_add_episode? +

Register the Garza Home MCP server in PolicyLayer and add a rule for graphiti_add_episode: 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 Garza Home MCP. Nothing to install.

What risk level is graphiti_add_episode? +

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

Can I rate-limit graphiti_add_episode? +

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

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

graphiti_add_episode is provided by the Garza Home MCP server (itsablabla/garza-home-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.