add_user_fact

A write tool on the Coach AI MCP server.

SERVERCoach AI SOURCE94aharris/coach-ai

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/94aharris-coach-ai/add-user-fact.md

WHAT IT DOES

What add_user_fact does on Coach AI

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

RISK

Why add_user_fact is rated Medium

The tool creates or modifies user profile data in the persistent memory system. While the description is empty, the name combined with server context and sibling tool patterns clearly indicates this is a Write operation that adds factual information about the user.

From the tool's definition Tool name 'add_user_fact' indicates data creation/modification. Sibling tools on the server include 'add_task_context', 'add_todo', 'create_daily_note', 'complete_todo', and 'delete_todo', establishing a pattern of data manipulation operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_user_fact safely

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

add_user_fact Rate-limited

add_user_fact 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": {
    "add_user_fact": {
      "limits": [
        {
          "counter": "add_user_fact_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 Coach AI, apply this rule, and every add_user_fact call is checked against it from then on.

FAQ

Questions about add_user_fact

What does the add_user_fact tool do? +

add_user_fact is a write tool on the Coach AI MCP server. It is categorised as a Write tool in the Coach AI MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_user_fact? +

Register the Coach AI MCP server in PolicyLayer and add a rule for add_user_fact: 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 Coach AI. Nothing to install.

What risk level is add_user_fact? +

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

Can I rate-limit add_user_fact? +

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

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

add_user_fact is provided by the Coach AI MCP server (94aharris/coach-ai). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Coach AI, and thousands of servers like it.

This server

All 28 Coach AI tools →

Across the catalogue

add-tag on Kanban MCP Server →kb_add on Persistent Kb → The MCP Attack Database →

Guides

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