increment-counter

Increment a session-scoped counter to verify state continuity

SERVERFrontmcp SOURCEagentfront/frontmcp

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/frontmcp/increment-counter.md

WHAT IT DOES

What increment-counter does on Frontmcp

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

RISK

Why increment-counter is rated Medium

The tool modifies a counter value (incrementing it), which is a write operation. It is session-scoped, meaning its blast radius is limited to a single session. The purpose is state verification, not destructive or financial in nature. Confidence is slightly reduced because the description is minimal and the actual implementation could vary.

From the tool's definition Increment a session-scoped counter to verify state continuity

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs increment-counter safely

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

increment-counter Rate-limited

increment-counter 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": {
    "increment-counter": {
      "limits": [
        {
          "counter": "increment-counter_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 Frontmcp, apply this rule, and every increment-counter call is checked against it from then on.

FAQ

Questions about increment-counter

What does the increment-counter tool do? +

Increment a session-scoped counter to verify state continuity. It is categorised as a Write tool in the Frontmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on increment-counter? +

Register the Front MCP server in PolicyLayer and add a rule for increment-counter: 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 Frontmcp. Nothing to install.

What risk level is increment-counter? +

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

Can I rate-limit increment-counter? +

Yes. Add a rate_limit block to the increment-counter 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 increment-counter completely? +

Set action: deny in the PolicyLayer policy for increment-counter. 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 increment-counter? +

increment-counter is provided by the Front MCP server (agentfront/frontmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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