resolve_key_claim

THE RISK

Medium Risk

Why resolve_key_claim needs a policy

This tool writes/modifies data by changing the resolution status of a key claim in the DICT system. It is not destructive (the claim can be reopened or resubmitted), not execute (no arbitrary code/command execution), and not financial (no direct money movement, though it affects tax/invoice authority systems).

From the tool's definition Tool performs POST operation to resolve (confirm or cancel) a pending DICT key claim. DICT is Argentina's decentralized identification registry system integrated with AFIP.

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

POLICY

How to control resolve_key_claim

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 resolve_key_claim:

policy.json

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

resolve_key_claim 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.

LIMIT THIS TOOL →

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EXPLORE

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Write tools on other servers

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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 resolve_key_claim

What does the resolve_key_claim tool do? +

Resolve a pending DICT key claim (confirm or cancel) — POST /dict/keys/claims/{id}/resolve. 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 resolve_key_claim? +

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

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

Can I rate-limit resolve_key_claim? +

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

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

resolve_key_claim 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.

CHECK YOUR STACK →