check_firefly_iii

Check Firefly III personal finance manager health via GET /api/v1/about (returns 200 with version or 401 if unauthenticated — both confirm service is up). Default port 8080.

SERVERMcp Nettools SOURCEaaronckj/mcp-nettools

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aaronckj-mcp-nettools/check-firefly-iii.md

WHAT IT DOES

What check_firefly_iii does on Mcp Nettools

AI agents call check_firefly_iii to retrieve information from Mcp Nettools without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why check_firefly_iii is rated Low

This tool only queries the health status of a Firefly III service via a GET request and returns diagnostic information (version or auth status). It performs no data modification, deletion, execution, or financial operations. While it targets a financial management application, the tool itself merely checks service availability and does not interact with financial data or operations.

From the tool's definition Tool performs a GET request to /api/v1/about endpoint to check service health and returns version information or authentication status.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs check_firefly_iii safely

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

check_firefly_iii Allowed

check_firefly_iii is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "check_firefly_iii": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Nettools, apply this rule, and every check_firefly_iii call is checked against it from then on.

FAQ

Questions about check_firefly_iii

What does the check_firefly_iii tool do? +

Check Firefly III personal finance manager health via GET /api/v1/about (returns 200 with version or 401 if unauthenticated — both confirm service is up). Default port 8080. It is categorised as a Read tool in the Mcp Nettools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on check_firefly_iii? +

Register the Mcp Nettools MCP server in PolicyLayer and add a rule for check_firefly_iii: 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 Mcp Nettools. Nothing to install.

What risk level is check_firefly_iii? +

check_firefly_iii is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit check_firefly_iii? +

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

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

check_firefly_iii is provided by the Mcp Nettools MCP server (aaronckj/mcp-nettools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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