create_summary_document · Devon MCP: Risk & Policy

WHAT IT DOES

What create_summary_document does on Devon

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

WHY IT NEEDS A POLICY

Why create_summary_document needs a policy

This tool performs a reversible write operation—it creates new summary documents in the DEVONthink database. While the summaries are AI-generated transformations of existing content, the core action is document creation (a Write operation), not mere querying (Read).

From the tool's definition The tool 'create_summary_document' creates a new document artifact in DEVONthink by generating and persisting AI-summarized content from existing documents. This is explicitly a creation operation that adds new data to the database.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_summary_document Rate-limited

create_summary_document 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_summary_document": {
      "limits": [
        {
          "counter": "create_summary_document_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 Devon, so you can run agents against it safely.

FAQ

Questions about create_summary_document

What does the create_summary_document tool do? +

Create an AI-generated summary document from multiple DEVONthink documents. It is categorised as a Write tool in the Devon 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_summary_document? +

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

What risk level is create_summary_document? +

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

Can I rate-limit create_summary_document? +

Yes. Add a rate_limit block to the create_summary_document 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_summary_document completely? +

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

create_summary_document is provided by the Devon MCP server (mnott/devon). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.