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Base URL

https://api.limitguard.ai

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Authentication

All paid endpoints require one of:
MethodHeaderDescription
API KeyX-API-Key: lg_live_...Subscription-based, monthly quota
x402 USDCX-PAYMENT: <base64>Pay-per-call, no subscription
SandboxX-LimitGuard-Mode: sandboxFree testing, mock data
See Authentication for full details.

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Request Format

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

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Response Format

All responses return JSON with consistent structure. Error responses follow RFC 7807 problem details:
Error Response
{
  "type": "about:blank",
  "title": "Validation Error",
  "status": 422,
  "detail": [{"field": "country", "message": "Invalid value"}]
}

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Quality Tiers

Control cost vs. freshness on tiered endpoints:
Header ValueDescription
X-Response-Quality: cachedServe from cache if available (cheapest)
X-Response-Quality: freshFull data source fan-out (default)
X-Response-Quality: enhancedFull fan-out + premium sources (most comprehensive)

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Rate Limits

ModeLimit
Sandbox10 requests/minute per IP
Free tier API key500 requests/month
Paid API keyBased on tier
x402 (no key)No rate limit (pay per call)
See Rate Limits for details.

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Endpoint Groups

Core Trust Intelligence

Entity checks, risk scoring, KYB verification — the core trust API.

Reputation

Trust decay scoring, reputation history, and watchlists.

Compliance

Regulatory alerts, EU AI Act readiness, and compliance reports.

Financial & Treasury

Wallet balances, treasury status, and settlement verification.

Webhooks

Register endpoints for real-time event notifications.

Certificates & Badges

Issue, verify, and display trust certificates and badges.

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OpenAPI Specification

The full OpenAPI 3.1 specification is available for download:
  • This documentation is auto-generated from the spec
  • Interactive playground — test endpoints directly from these docs
  • Code generation — use the spec with any OpenAPI client generator
Use the interactive API playground on each endpoint page to test requests directly. Set your API key in the authorization section and make live requests.