Low Risk

check_compliance

Run a full compliance check on an IBAN: validates the IBAN, enriches with bank data, then screens against sanctions lists, checks SEPA reachability, verifies VoP participation, and computes a composite risk score. When to use: assessing compliance risk of a payment recipient for AML/KYC workflows...

Part of the Ibanforge server.

check_compliance is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call check_compliance to retrieve information from Ibanforge without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though check_compliance only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "check_compliance": {}
  }
}

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These attack patterns abuse exactly the kind of access check_compliance gives an agent. Each links to the full case and the policy that stops it:

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Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so check_compliance only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the check_compliance tool do? +

Run a full compliance check on an IBAN: validates the IBAN, enriches with bank data, then screens against sanctions lists, checks SEPA reachability, verifies VoP participation, and computes a composite risk score. When to use: assessing compliance risk of a payment recipient for AML/KYC workflows, verifying an IBAN is not associated with a sanctioned country or bank, checking SEPA Instant and Verification of Payee participation, or producing a structured risk assessment before approving a payment. When NOT to use: for simple IBAN format validation without compliance data, use validate_iban (4x cheaper). For BIC-only lookups, use lookup_bic. Behavior: this tool is read-only with no side effects. It performs IBAN validation and enrichment (same as validate_iban), then queries a local compliance database for sanctions (OFAC/EU/UN lists), FATF grey/black list status, SEPA scheme participation (SCT, SDD, SCT_INST), and VoP participant status. Computes a composite risk score from 0 (lowest risk) to 100 (highest risk) based on 21 weighted risk flags. Response time is under 50ms. Returns a single JSON object. If compliance data is unavailable for a country/BIC, returns a fallback risk_level of 'elevated' with a flag 'compliance_data_unavailable'. Risk score weights: sanctioned country (+50), sanctioned bank (+50), FATF black list (+30), FATF grey list (+20), high-risk country (+20), elevated-risk country (+10), payment institution issuer (+15), EMI issuer (+10), no SEPA Instant (+5), no VoP (+5), test BIC (+30). Risk levels: low (0-19), medium (20-39), elevated (40-59), high (60-79), critical (80-100). Returns: { valid, country, bban, bic, sepa, issuer, risk_indicators, compliance: { sanctions: { country_sanctioned, bank_sanctioned, matched_lists, fatf_status }, reachability: { sepa_instant, sct, sdd }, vop: { participant, status }, risk_score, risk_level, flags } } Example: input 'DE89370400440532013000' → { valid: true, compliance: { sanctions: { country_sanctioned: false, fatf_status: 'member' }, risk_score: 5, risk_level: 'low', flags: [] } } Cost: $0.02 USDC per call via x402 micropayment on Base L2.. It is categorised as a Read tool in the Ibanforge MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on check_compliance? +

Register the Ibanforge MCP server in PolicyLayer and add a rule for check_compliance: 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 Ibanforge. Nothing to install.

What risk level is check_compliance? +

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

Can I rate-limit check_compliance? +

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

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

check_compliance is provided by the Ibanforge MCP server (ibanforge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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