Validates an IBAN (International Bank Account Number) using the ISO 13616 MOD-97 algorithm. Supports 18 European countries: PT, ES, FR, DE, IT, NL, BE, PL, SE, DK, FI, AT, IE, GR, HU, RO, CZ, HR. Returns { valid: boolean, country: string, iban: string } — country is extracted from the 2-letter pr...
AI agents call validate_iban to retrieve information from Mcp Europe Business without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
validate_iban is a pure validation function that checks the format and structure of an IBAN against the ISO 13616 MOD-97 algorithm and returns a boolean result. It retrieves no sensitive data beyond parsing the provided input, creates no resources, executes no external operations, and has no irreversible effects. This is a straightforward read operation typical of compliance validation tools.
From the tool's definition The tool 'Validates an IBAN...Returns { valid: boolean, country: string, iban: string }' — it performs validation and returns data with no side effects.
Attacks that exploit this kind of access
Validates an IBAN (International Bank Account Number) using the ISO 13616 MOD-97 algorithm. Supports 18 European countries: PT, ES, FR, DE, IT, NL, BE, PL, SE, DK, FI, AT, IE, GR, HU, RO, CZ, HR. Returns { valid: boolean, country: string, iban: string } — country is extracted from the 2-letter prefix. Returns { valid: false, reason: string } for malformed input. Spaces are automatically stripped before validation. Use when validating supplier bank details for SEPA transfers, processing direct debit mandates, verifying payment data in e-commerce checkouts, or any workflow requiring a verified EU bank account number. Validates structure and checksum only — does not confirm account existence. It is categorised as a Read tool in the Mcp Europe Business MCP Server, which means it retrieves data without modifying state.
Register the Mcp Europe Business MCP server in PolicyLayer and add a rule for validate_iban: 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 Europe Business. Nothing to install.
validate_iban 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_iban 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_iban. 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_iban is provided by the Mcp Europe Business MCP server (josemvelez78/mcp-europe-business). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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