document_check

Document validation — OCR + authenticity check on RG / CNH / passport / proof of residence. Returns structured fields + authenticity_score. POST /v1/checks/document.

ServerMcp Afip
CategoryRead

How to control document_check ↓

WHAT IT DOES

What document_check does on Mcp Afip

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

THE RISK

Low Risk

Why document_check needs a policy

This tool retrieves and validates document data without creating, modifying, deleting, or executing arbitrary operations. It extracts information (OCR) and computes a verification metric (authenticity score), classifying it as Read.

From the tool's definition Tool performs document validation via OCR and authenticity checking, returning structured fields and an authenticity score. No modification, deletion, or financial transaction occurs.

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

POLICY

How to control document_check

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 document_check:

policy.json

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

document_check is read-only, so it stays allowed — but 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

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about document_check

What does the document_check tool do? +

Document validation — OCR + authenticity check on RG / CNH / passport / proof of residence. Returns structured fields + authenticity_score. POST /v1/checks/document. It is categorised as a Read tool in the Mcp Afip MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on document_check? +

Register the Mcp Afip MCP server in PolicyLayer and add a rule for document_check: 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 document_check? +

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

Can I rate-limit document_check? +

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

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

document_check 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.

Start from Mcp Afip, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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