AI agents use add_identifier to create or update resources in Mcp Mifosx — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Mifosx environment.
This tool creates/adds new identity information to a client profile, which is a reversible modification. While it involves sensitive identity data in a financial system context, it does not move money (not Financial), does not delete data (not Destructive), and does not execute arbitrary code (not Execute).
From the tool's definition Tool performs 'Add a new identity document for a client' — a create operation that modifies client records by introducing new data (identity documents).
Documented attack patterns abuse exactly the kind of access add_identifier gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Mifosx, and nothing reaches the server without passing your rules. This is the rule we recommend for add_identifier:
{
"version": "1",
"default": "deny",
"tools": {
"add_identifier": {
"limits": [
{
"counter": "add_identifier_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_identifier 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.
Free to start. No card required.
Add a new identity document for a client. It is categorised as a Write tool in the Mcp Mifosx MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Mcp Mifosx MCP server in PolicyLayer and add a rule for add_identifier: 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 Mifosx. Nothing to install.
add_identifier is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the add_identifier 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.
Set action: deny in the PolicyLayer policy for add_identifier. 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.
add_identifier is provided by the Mcp Mifosx MCP server (openmf/mcp-mifosx). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Mcp Mifosx, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
73 Mcp Mifosx tools catalogued and risk-classified — across an index of 43,000+ MCP servers.