Medium Risk

edit_tool

Modifies a tool using JSON Patch operations. Provide either draftId (for playground drafts) or toolId (for saved tools), not both. You MUST include payload with the same test data from build_tool. Check the returned persistence/toolId/draftId/saveError fields instead of assuming accepted edits au...

How to control edit_tool ↓

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

Medium Risk

edit_tool creates or modifies tool definitions within the Superglue workflow system. This is a Write action because it updates tool configurations (reversibly editable). While the tool itself doesn't execute workflows or delete data, modifying tool definitions could indirectly affect downstream workflow behavior.

From the tool's definition The tool description explicitly states "Modifies a tool using JSON Patch operations," indicating it changes existing tool configurations.

Documented attack patterns abuse exactly the kind of access edit_tool gives an agent:

PolicyLayer is an MCP gateway — it sits between your AI agents and Superglue MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for edit_tool:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "edit_tool": {
      "limits": [
        {
          "counter": "edit_tool_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

edit_tool 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.

  1. Create a free account and register Superglue MCP — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

Free to start. No card required.

Go deeper

What does the edit_tool tool do? +

Modifies a tool using JSON Patch operations. Provide either draftId (for playground drafts) or toolId (for saved tools), not both. You MUST include payload with the same test data from build_tool. Check the returned persistence/toolId/draftId/saveError fields instead of assuming accepted edits auto-save. It is categorised as a Write tool in the Superglue 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 edit_tool? +

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

What risk level is edit_tool? +

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

Can I rate-limit edit_tool? +

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

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

edit_tool is provided by the Superglue MCP server (superglue-ai/superglue). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Superglue MCP tool call.

Deterministic rules across all 21 Superglue MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

Free to start. No card required.

21 Superglue MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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