data_changes

What happened in a collection after a ledger position YOU hold — including edits the USER made in the widget, which never pass through you. Any mark you already have works as

SERVEROpen Mcp Apps SOURCE@2nd1st/open-mcp-apps

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/2nd1st-open-mcp-apps/data-changes.md

WHAT IT DOES

What data_changes does on Open Mcp Apps

AI agents call data_changes to retrieve information from Open Mcp Apps without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why data_changes is rated Low

Tool retrieves historical change data from a collection without modifying or executing external operations.

From the tool's definition What happened in a collection after a ledger position; includes edits user made

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs data_changes safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Open Mcp Apps, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For data_changes, this is the rule to start with:

data_changes Allowed

data_changes is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "data_changes": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Open Mcp Apps, apply this rule, and every data_changes call is checked against it from then on.

FAQ

Questions about data_changes

What does the data_changes tool do? +

What happened in a collection after a ledger position YOU hold — including edits the USER made in the widget, which never pass through you. Any mark you already have works as. It is categorised as a Read tool in the Open Mcp Apps MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on data_changes? +

Register the Open Mcp Apps MCP server in PolicyLayer and add a rule for data_changes: 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 Open Mcp Apps. Nothing to install.

What risk level is data_changes? +

data_changes is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit data_changes? +

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

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

data_changes is provided by the Open Mcp Apps MCP server (@2nd1st/open-mcp-apps). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Open Mcp Apps, and thousands of servers like it.

This server

All 32 Open Mcp Apps tools →

Across the catalogue

review_changes on MCP Server PR Pilot →get_customer_data on 08-AI-Business-Agent → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →