apply_edit_batch · Vigentic MCP: Risk & Policy

WHAT IT DOES

What apply_edit_batch does on Vigentic MCP

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

WHY IT NEEDS A POLICY

Why apply_edit_batch needs a policy

This tool creates or modifies data reversibly within editor buffers. It does not delete data (which would be Destructive), execute arbitrary code (Execute), or perform financial operations. Multiple edits could affect code structure, but changes remain reversible through undo/checkpoint mechanisms visible in sibling tools (create_checkpoint, discard_buffer_changes).

From the tool's definition Tool applies multiple ordered edits against a target buffer. The description explicitly states it modifies buffer content through edits. Key phrases: 'Apply multiple ordered edits', 'changed-tick check' indicating modification tracking.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

apply_edit_batch Rate-limited

apply_edit_batch 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": {
    "apply_edit_batch": {
      "limits": [
        {
          "counter": "apply_edit_batch_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 Vigentic MCP, so you can run agents against it safely.

FAQ

Questions about apply_edit_batch

What does the apply_edit_batch tool do? +

Apply multiple ordered edits against one target buffer with one initial changed-tick check. useLatestChangedTick is current-buffer-only; useLatestSessionChangedTick works for explicit path targets or already-open explicit bufferId targets in the editor session. It is categorised as a Write tool in the Vigentic 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 apply_edit_batch? +

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

What risk level is apply_edit_batch? +

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

Can I rate-limit apply_edit_batch? +

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

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

apply_edit_batch is provided by the Vigentic MCP server (munozu/vigentic-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.