guard_write_batch · Anchord MCP: Risk & Policy

WHAT IT DOES

What guard_write_batch does on Anchord MCP

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

WHY IT NEEDS A POLICY

Why guard_write_batch needs a policy

An AI agent can call guard_write_batch faster than any human can review — one bad instruction and it creates or modifies resources in Anchord MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

guard_write_batch Rate-limited

guard_write_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": {
    "guard_write_batch": {
      "limits": [
        {
          "counter": "guard_write_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 Anchord MCP, so you can run agents against it safely.

FAQ

Questions about guard_write_batch

What does the guard_write_batch tool do? +

Batch pre-write safety check for multiple AnchorIDs (max 200). It is categorised as a Write tool in the Anchord 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 guard_write_batch? +

Register the Anchord MCP server in PolicyLayer and add a rule for guard_write_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 Anchord MCP. Nothing to install.

What risk level is guard_write_batch? +

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

Can I rate-limit guard_write_batch? +

Yes. Add a rate_limit block to the guard_write_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 guard_write_batch completely? +

Set action: deny in the PolicyLayer policy for guard_write_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 guard_write_batch? +

guard_write_batch is provided by the Anchord MCP server (nolenation04/anchord-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.