create | PolicyLayer

WHAT IT DOES

What create does on TheWeave: Memory for AI agents you can cat, grep, and git

AI agents use create to create or update resources in TheWeave: Memory for AI agents you can cat, grep, and git — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your TheWeave: Memory for AI agents you can cat, grep, and git environment.

WHY IT NEEDS A POLICY

Why create needs a policy

The tool creates or overwrites files in the vault, which are reversible actions (files can be deleted or restored). While overwriting existing files could result in data loss, this is categorized as Write rather than Destructive because: (1) the primary intent is file creation/modification, (2) the effect is reversible in a version-controlled system (implied by 'git' in server description), and (3) users typically…

From the tool's definition Tool description explicitly states 'Create or overwrite a file at the given vault-relative path.' This is a write operation that creates or modifies data reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create Rate-limited

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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create": {
      "limits": [
        {
          "counter": "create_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 TheWeave: Memory for AI agents you can cat, grep, and git, so you can run agents against it safely.

FAQ

Questions about create

What does the create tool do? +

Create or overwrite a file at the given vault-relative path. It is categorised as a Write tool in the TheWeave: Memory for AI agents you can cat, grep, and git MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create? +

Register the TheWeave: Memory for AI agents you can cat, grep, and git MCP server in PolicyLayer and add a rule for 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 TheWeave: Memory for AI agents you can cat, grep, and git. Nothing to install.

What risk level is create? +

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

Can I rate-limit create? +

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

Set action: deny in the PolicyLayer policy for 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 create? +

create is provided by the TheWeave: Memory for AI agents you can cat, grep, and git MCP server (theweavesc/theweave). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.