observe_tool_complete

v2.1.0 \u2014 Record successful completion. Computes durationMs from observe_tool_start. No-op on unknown callId.

SERVEREnhanced Knowledge Graph Memory Server SOURCEdanielsimonjr/memory-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/danielsimonjr-memory-mcp/observe-tool-complete.md

WHAT IT DOES

What observe_tool_complete does on Enhanced Knowledge Graph Memory Server

AI agents use observe_tool_complete to create or update resources in Enhanced Knowledge Graph Memory Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Enhanced Knowledge Graph Memory Server environment.

RISK

Why observe_tool_complete is rated Medium

This tool records the completion of a tool call, writing timing and status data into the persistent knowledge graph. It is a Write operation (creates/modifies a record), not destructive or financial. Severity is low since it only logs metadata and is a no-op on unknown callIds, limiting blast radius.

From the tool's definition 'Record successful completion' and 'Computes durationMs from observe_tool_start' — writes completion metadata/timing data to the knowledge graph

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs observe_tool_complete safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For observe_tool_complete, this is the rule to start with:

observe_tool_complete Rate-limited

observe_tool_complete 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": {
    "observe_tool_complete": {
      "limits": [
        {
          "counter": "observe_tool_complete_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every observe_tool_complete call is checked against it from then on.

FAQ

Questions about observe_tool_complete

What does the observe_tool_complete tool do? +

v2.1.0 \u2014 Record successful completion. Computes durationMs from observe_tool_start. No-op on unknown callId. It is categorised as a Write tool in the Enhanced Knowledge Graph Memory 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 observe_tool_complete? +

Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for observe_tool_complete: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.

What risk level is observe_tool_complete? +

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

Can I rate-limit observe_tool_complete? +

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

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

observe_tool_complete is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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