upload_live_photo

ServerMcp Afip
CategoryWrite

WHAT IT DOES

What upload_live_photo does on Mcp Afip

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

THE RISK

Medium Risk

Why upload_live_photo needs a policy

This tool creates and stores new biometric data (facial image) tied to an applicant identity. It is reversible (photos can be deleted or replaced) so it qualifies as Write rather than Destructive. However, severity is elevated to medium due to the sensitive nature of biometric data and the identity verification context (AFIP tax authority).

From the tool's definition Tool name 'upload_live_photo' and description states it 'Upload[s] a live photo (selfie) for an applicant' via 'multipart/form-data', indicating creation/storage of new biometric data in the system.

Documented attack patterns abuse exactly the kind of access upload_live_photo gives an agent:

POLICY

How to control upload_live_photo

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Afip, and nothing reaches the server without passing your rules. This is the rule we recommend for upload_live_photo:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "upload_live_photo": {
      "limits": [
        {
          "counter": "upload_live_photo_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

upload_live_photo 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.

Create a free account and register Mcp Afip — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about upload_live_photo

What does the upload_live_photo tool do? +

Upload a live photo (selfie) for an applicant, used by facial_similarity_photo reports. Sent as multipart/form-data. NOTE: Onfido recommends capturing live photos via their SDK; direct API upload may be restricted on some accounts. It is categorised as a Write tool in the Mcp Afip MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on upload_live_photo? +

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

What risk level is upload_live_photo? +

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

Can I rate-limit upload_live_photo? +

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

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

upload_live_photo is provided by the Mcp Afip MCP server (codespar/mcp-dev-latam). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Afip tool call.

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