Validates an Argentine CBU (Clave Bancaria Uniforme) — the 22-digit standardized bank account identifier used for electronic transfers in Argentina, as defined by BCRA (Banco Central de la República Argentina). Applies the official weighted modulo-10 checksum algorithm validated in two blocks: th...
AI agents call validate_cbu_ar to retrieve information from Mcp Latam Business without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a pure validation tool that queries/checks data against a known algorithm (modulo-10 checksum). It retrieves and returns information about whether a CBU is correctly formatted according to BCRA standards, but does not create, modify, delete, or move funds. The tool has no side effects on financial systems — it only validates the format.
From the tool's definition Tool validates a CBU (bank account identifier) using a checksum algorithm and returns validation status with extracted metadata (bank_code).
Attacks that exploit this kind of access
Validates an Argentine CBU (Clave Bancaria Uniforme) — the 22-digit standardized bank account identifier used for electronic transfers in Argentina, as defined by BCRA (Banco Central de la República Argentina). Applies the official weighted modulo-10 checksum algorithm validated in two blocks: the 8-digit bank/branch block and the 14-digit account block. Returns { valid: boolean, cbu: string, bank_code: string } or { valid: false, reason: string }. Use when processing Argentine wire transfers, validating supplier bank accounts, or building Argentine payment flows. It is categorised as a Read tool in the Mcp Latam Business MCP Server, which means it retrieves data without modifying state.
Register the Mcp Latam Business MCP server in PolicyLayer and add a rule for validate_cbu_ar: 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 Latam Business. Nothing to install.
validate_cbu_ar is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the validate_cbu_ar 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 validate_cbu_ar. 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.
validate_cbu_ar is provided by the Mcp Latam Business MCP server (josemvelez78/mcp-latam-business). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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