LimitGuard

Real-time trust scoring for AI agents, businesses, and transactions. 8 data sources. One API call. Verified on-chain. LimitGuard is a Trust Intelligence API that lets AI agents and developers verify the trustworthiness of any business entity before transacting. We aggregate 8 independent data sources — business registries, sanctions lists, jurisdiction risk, domain intelligence, IBAN validation, VAT verification, wallet screening, and on-chain payment history — 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": 8,
  "processing_time_ms": 247
}

8 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 Risk

ETH, BTC, SOL screening

x402 History

On-chain payment trust

How It Works

Send entity data

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

8 parallel checks

LimitGuard queries all available data sources in parallel. Business registry, sanctions, jurisdiction, domain, financial, and on-chain — all in under 500ms.

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.
Three quality tiers	Choose cached ( $0.01), fresh ($ 0.05), or enhanced ($0.15).
AI agent native	MCP, A2A, and x402 discovery. Agents find and use LimitGuard autonomously.
GDPR compliant	Belgian entity, EU data residency, no PII stored beyond verification.
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

Introduction

LimitGuard

Quickstart

API Reference

Sandbox

x402 Protocol

Why LimitGuard?

8 Verification Layers

KVK / CBE

Sanctions

Jurisdiction

Domain

IBAN

VAT / VIES

Wallet Risk

x402 History

How It Works

Key Features

Who Uses LimitGuard

Ready to start?

​LimitGuard

Quickstart

API Reference

Sandbox

x402 Protocol

​Why LimitGuard?

​8 Verification Layers

KVK / CBE

Sanctions

Jurisdiction

Domain

IBAN

VAT / VIES

Wallet Risk

x402 History

​How It Works

​Key Features

​Who Uses LimitGuard

Ready to start?

LimitGuard

Why LimitGuard?

8 Verification Layers

How It Works

Key Features

Who Uses LimitGuard