// MCP TOOL REFERENCE

create_client_token

Mint a Braintree client token via createClientToken for client-side tokenization (Drop-in, Hosted Fields, mobile SDKs). Pass a customerId to scope the token to a customer for vault-aware flows.

ServerMcp Afip
CategoryFinancial

How to control create_client_token ↓

WHAT IT DOES

What create_client_token does on Mcp Afip

AI agents use create_client_token to commit financial operations through Mcp Afip — usually the final step of a payment, billing, or trading workflow. A call moves real money.

THE RISK

Critical Risk

Why create_client_token needs a policy

This tool generates payment tokens via Braintree, a payment processing platform. Client tokens are the entry point for financial transactions — they authorize client-side payment flows including vaulted payment methods. Misuse could enable unauthorized payment tokenization or expose customer payment vaults, making this a Financial category tool with high severity.

From the tool's definition Mint a Braintree client token via createClientToken for client-side tokenization... Pass a customerId to scope the token to a customer for vault-aware flows

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

POLICY

How to control create_client_token

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 create_client_token:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_client_token": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to create_client_token is blocked until a human approves it. The rest of the server keeps working.

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

More Mcp Afip tools

Financial authorize_transaction Authorize a transaction (reserve funds without capturing) via Braintree GraphQL authorizeP Financial cancel_collection Cancel a scheduled collection request Financial cancel_credit Cancel an authorized-but-uncaptured credit payment. Financial cancel_payment Attempt to cancel a payment that has not yet settled. Iniciador endpoint: POST /payments/{ Financial cancel_payment_intent Cancel a payment intent that has not yet been captured. Fails on already-captured intents; Financial cancel_recurrence Cancel an active recurrence. Future charges will stop; already-charged cycles are untouche Financial cancel_subscription Cancel a subscription by ID Financial revoke_token Revoke an issued access_token or refresh_token at POST /v1/token/revoke. Use to terminate

All 1300 Mcp Afip tools →

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Go deeper

Critical-risk tools in Mcp Afip → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about create_client_token

What does the create_client_token tool do? +

Mint a Braintree client token via createClientToken for client-side tokenization (Drop-in, Hosted Fields, mobile SDKs). Pass a customerId to scope the token to a customer for vault-aware flows. It is categorised as a Financial tool in the Mcp Afip MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on create_client_token? +

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

create_client_token is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit create_client_token? +

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

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

create_client_token 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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1300 Mcp Afip tools catalogued and risk-classified — across an index of 43,000+ MCP servers.