diary_write

Write a timestamped diary entry for a specialist agent. Each agent gets its own persistent diary (entity: diary-{agentId}). Use for code review findings, architecture decisions, ops incidents, etc.

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/diary-write.md

WHAT IT DOES

What diary_write does on Enhanced Knowledge Graph Memory Server

AI agents use diary_write 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 diary_write is rated Medium

This tool creates and stores new diary entries in a persistent knowledge graph store, making it a Write operation. It is reversible (entries can be deleted or modified), so it does not rise to Destructive. Severity is medium because while diary entries are created persistently, they are self-contained narrative records without direct impact on system operations, financial transactions, or code execution.

From the tool's definition Tool description explicitly uses 'Write' action verb and states 'Write a timestamped diary entry' which creates new persistent records.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs diary_write 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 diary_write, this is the rule to start with:

diary_write Rate-limited

diary_write 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": {
    "diary_write": {
      "limits": [
        {
          "counter": "diary_write_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 diary_write call is checked against it from then on.

FAQ

Questions about diary_write

What does the diary_write tool do? +

Write a timestamped diary entry for a specialist agent. Each agent gets its own persistent diary (entity: diary-{agentId}). Use for code review findings, architecture decisions, ops incidents, etc. 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 diary_write? +

Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for diary_write: 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 diary_write? +

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

Can I rate-limit diary_write? +

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

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

diary_write 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.

KEEP EXPLORING

More on Enhanced Knowledge Graph Memory Server, and thousands of servers like it.

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All 225 Enhanced Knowledge Graph Memory Server tools →

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team_manager_write_memory on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →