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All prices are in USDC. No subscription required — pay per API call via x402 protocol or use an API key for subscription billing.

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Tiered Pricing

Five core endpoints support three quality tiers. Select with the X-Response-Quality header (default: fresh).
EndpointCachedFresh (default)Enhanced
POST /v1/entity/check$0.01$0.05$0.15
POST /v1/risk/score$0.005$0.01$0.05
POST /v1/reputation/score$0.01$0.03$0.10
GET /v1/compliance/report/{id}$0.10$0.50$1.50
POST /v1/kyb/check$0.25$1.25$2.50

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Quality Tier Definitions

Return Redis-cached result if available. Use when freshness isn’t critical and you want the lowest cost. Set X-Response-Quality: cached.
Always run full data source fan-out. This is the default behavior when no header is sent. Set X-Response-Quality: fresh.
Full fan-out plus premium data sources. Use for high-value transactions requiring maximum confidence. Set X-Response-Quality: enhanced.

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Flat-Priced Endpoints

These endpoints have a single price regardless of quality tier:
EndpointPrice
GET /v1/reputation/history/{entity_hash}$0.02
GET /v1/wallet/balance$0.01
GET /v1/compliance/alerts$0.02
GET /v1/compliance/readiness/{entity_id}$0.03

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Free Endpoints

No payment or API key required:
CategoryEndpoints
HealthGET /health
Key provisioningPOST /v1/keys/create
Discovery/.well-known/x402.json, /.well-known/agent.json, /.well-known/mcp.json
Transparency/v1/self-verify, /v1/methodology, /v1/self-verify/signals
Trust badges/v1/badge/{id}, /v1/badge/{id}.json, /v1/verify/{id}
Certificates/v1/certificate/{hash} (verification only)
Legal/v1/legal/privacy, /v1/legal/terms, /v1/legal/dpa
LLM/llms.txt, /llms-full.txt

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Payment Methods

x402 USDC Micropayments

AI agents and anonymous callers pay per request via x402 V2 protocol. No subscription required.Networks: Base Mainnet, Base Sepolia, Solana Mainnet, Solana Devnet.Learn more →

API Key Subscription

API key holders bypass x402 — pay via subscription. Monthly quotas apply based on tier.Tiers: Free (500/mo), Starter, Pro, Enterprise.Learn more →

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USDC Amount Reference

For x402 integration — amounts use 6 decimal places (1_000_000 = $1.00):
PriceUSDC 6-decimalx402 amount field
$0.0055,000"5000"
$0.0110,000"10000"
$0.0220,000"20000"
$0.0330,000"30000"
$0.0550,000"50000"
$0.10100,000"100000"
$0.15150,000"150000"
$0.25250,000"250000"
$0.50500,000"500000"
$1.251,250,000"1250000"
$1.501,500,000"1500000"
$2.502,500,000"2500000"

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Dynamic Pricing

Pricing can adjust based on volume. Query current prices: 
# All endpoint prices with volume discount
curl "https://api.limitguard.ai/v1/sales/pricing?monthly_calls=1000"

# Specific endpoint price
curl "https://api.limitguard.ai/v1/sales/pricing/v1%2Fentity%2Fcheck?monthly_calls=1000"
Volume discounts are applied automatically based on your monthly_calls parameter.