update_grail_bucket · Dynatrace SaaS MCP Server MCP

WHAT IT DOES

What update_grail_bucket does on Dynatrace SaaS MCP Server

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

WHY IT NEEDS A POLICY

Why update_grail_bucket needs a policy

This tool modifies data retention settings for a Grail bucket—a configuration change that is reversible (retention policies can be adjusted again). It does not delete data irreversibly, execute arbitrary code, or move money. The Write category applies because it creates or modifies data/configuration reversibly.

From the tool's definition Tool description explicitly states 'Update a Grail retention bucket' and tags it as 'WRITE'. Dynatrace Grail buckets store observability data; updating retention policies affects data storage configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_grail_bucket Rate-limited

update_grail_bucket 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": {
    "update_grail_bucket": {
      "limits": [
        {
          "counter": "update_grail_bucket_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 Dynatrace SaaS MCP Server, so you can run agents against it safely.

FAQ

Questions about update_grail_bucket

What does the update_grail_bucket tool do? +

Update a Grail retention bucket by name (WRITE, Dynatrace Storage Management v1). It is categorised as a Write tool in the Dynatrace SaaS MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_grail_bucket? +

Register the Dynatrace SaaS MCP Server MCP server in PolicyLayer and add a rule for update_grail_bucket: 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 Dynatrace SaaS MCP Server. Nothing to install.

What risk level is update_grail_bucket? +

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

Can I rate-limit update_grail_bucket? +

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

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

update_grail_bucket is provided by the Dynatrace SaaS MCP Server MCP server (mnmozi/dynatrace-mcp-saas). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.