memory_add_observations

Add new observations, details, or information to existing entities in the user

SERVERVaultAssist SOURCE3xcaffeine/mcp-server

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/3xcaffeine-mcp-server/memory-add-observations.md

WHAT IT DOES

What memory_add_observations does on VaultAssist

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

RISK

Why memory_add_observations is rated Medium

This tool creates or modifies data in a reversible manner by appending observations to entities, which aligns with the Write category. It is not destructive (data is not deleted), not Execute (no arbitrary code or shell commands), and not Financial.

From the tool's definition The tool description states it will 'Add new observations, details, or information to existing entities in the user'. The verb 'Add' and action of appending information to entities indicates data modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs memory_add_observations safely

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

memory_add_observations Rate-limited

memory_add_observations 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": {
    "memory_add_observations": {
      "limits": [
        {
          "counter": "memory_add_observations_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 VaultAssist, apply this rule, and every memory_add_observations call is checked against it from then on.

FAQ

Questions about memory_add_observations

What does the memory_add_observations tool do? +

Add new observations, details, or information to existing entities in the user. It is categorised as a Write tool in the VaultAssist MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on memory_add_observations? +

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

What risk level is memory_add_observations? +

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

Can I rate-limit memory_add_observations? +

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

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

memory_add_observations is provided by the VaultAssist MCP server (3xcaffeine/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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