Medium Risk

write_scene_create

Insert a scene at a specific position. POV character + location + time_marker enable continuity_check. scene_goal/conflict/outcome are optional but recommended — they make the scene\

How to control write_scene_create ↓

What write_scene_create does on Celiums Memory

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

Medium Risk

Why write_scene_create needs a policy

This tool creates or adds new scene records to the memory engine, which is a reversible write operation. It does not execute arbitrary code, delete data, or trigger financial transactions. The 'Insert' verb and scene construction parameters align with the Write category.

From the tool's definition Tool name 'write_scene_create' and description 'Insert a scene at a specific position' indicate creation of new data in the memory system.

Documented attack patterns abuse exactly the kind of access write_scene_create gives an agent:

How to control write_scene_create

PolicyLayer is an MCP gateway — it sits between your AI agents and Celiums Memory, and nothing reaches the server without passing your rules. This is the rule we recommend for write_scene_create:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "write_scene_create": {
      "limits": [
        {
          "counter": "write_scene_create_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

write_scene_create 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.

  1. Create a free account and register Celiums Memory — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about write_scene_create

What does the write_scene_create tool do? +

Insert a scene at a specific position. POV character + location + time_marker enable continuity_check. scene_goal/conflict/outcome are optional but recommended — they make the scene\. It is categorised as a Write tool in the Celiums Memory MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on write_scene_create? +

Register the Celiums Memory MCP server in PolicyLayer and add a rule for write_scene_create: 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 Celiums Memory. Nothing to install.

What risk level is write_scene_create? +

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

Can I rate-limit write_scene_create? +

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

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

write_scene_create is provided by the Celiums Memory MCP server (terrizoaguimor/celiums-memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Celiums Memory tool call.

Start from Celiums Memory, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

62 Celiums Memory tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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