Limitguard

Real-time trust scoring for AI agents, businesses, and transactions. Up to 7 data sources. One API call. Paid per call in USDC or with an API key. Limitguard is a Trust Intelligence API that lets AI agents and developers verify the trustworthiness of any business entity before transacting. We aggregate up to 7 independent data sources (business registries, sanctions lists, jurisdiction risk, domain intelligence, IBAN validation, VAT verification, and wallet address format validation) into a single trust score.

Quickstart

Get your first trust score in under 3 minutes

API Reference

Explore all 64 endpoints with interactive playground

Sandbox

Test for free — no wallet or API key required

x402 Protocol

Pay per call with USDC — no subscription needed

Why Limitguard?

AI agents transact billions daily without trust verification. There’s no standard way for an agent to know if a counterparty is legitimate, sanctioned, or fraudulent before sending funds. Limitguard solves this with a single API call:

curl -X POST https://api.limitguard.ai/v1/entity/check \
  -H "X-API-Key: lg_live_..." \
  -H "Content-Type: application/json" \
  -d '{"entity_name": "Acme Corp BV", "country": "NL", "kvk_number": "12345678"}'

Response

{
  "trust_score": 87,
  "trust_level": "high",
  "cluster": "established_eu_sme",
  "recommendation": "proceed",
  "sources_checked": 3,
  "processing_time_ms": 247
}

7 Verification Layers

KVK / CBE

Dutch & Belgian business registry

Sanctions

OpenSanctions — 80+ global lists

Jurisdiction

CPI + FATF grey/blacklist

Domain

WHOIS, DNS, SSL analysis

IBAN

Bank account validation

VAT / VIES

EU VAT registration check

Wallet Format Check

ETH, BTC, SOL address format validation. Full wallet screening (OFAC match, on-chain signals) is a separate, free tool: see Trust Architecture.

How It Works

Send entity data

POST the entity name, country, and any identifiers you have — KVK number, domain, IBAN, VAT, or wallet address.

Parallel checks

Limitguard queries every data source your identifiers allow, in parallel: business registry, sanctions and PEP, jurisdiction risk, domain and financial checks.

Get trust score

Receive a trust score (0-100), risk level, entity cluster, and recommendation: proceed, review, enhanced due diligence, or block.

Key Features

Feature	Description
Pay-per-use	No subscription required. Pay with USDC via x402 protocol.
Sandbox mode	Test free with realistic mock data. No wallet needed.
Two quality tiers	Choose cached or fresh: $0.10 /$ 0.85 on `/v1/entity/check`.
AI agent native	MCP, A2A, and x402 discovery. Agents find and use Limitguard autonomously.
GDPR compliant	Operated by Ambulatio Consulting B.V. (trading as Limitguard) in the Netherlands. Application data stored in the EU, with published retention periods.
Self-verifying	Limitguard verifies itself with its own API. Our score is public.

Who Uses Limitguard

AI agent developers — Verify counterparties before autonomous transactions
Fintech platforms — KYB and compliance checks via API
Crypto protocols — Wallet screening and entity trust scoring
B2B marketplaces — Supplier and buyer trust verification

Ready to start?

Get your first trust score in under 3 minutes

Get Started

Core Concepts

Guides

Post-mortems

Introduction

Limitguard

Quickstart

API Reference

Sandbox

x402 Protocol

Why Limitguard?

7 Verification Layers

KVK / CBE

Sanctions

Jurisdiction

Domain

IBAN

VAT / VIES

Wallet Format Check

How It Works

Key Features

Who Uses Limitguard

Ready to start?

​Limitguard

Quickstart

API Reference

Sandbox

x402 Protocol

​Why Limitguard?

​7 Verification Layers

KVK / CBE

Sanctions

Jurisdiction

Domain

IBAN

VAT / VIES

Wallet Format Check

​How It Works

​Key Features

​Who Uses Limitguard

Ready to start?

Limitguard

Why Limitguard?

7 Verification Layers

How It Works

Key Features

Who Uses Limitguard