Pricing

All prices are in USDC. Pay per API call via the x402 protocol, or hold a paid-tier API key with a prepaid balance that each priced call is debited from. What it is: Limitguard is a KYB, sanctions/PEP and entity-trust API for AI agents and developers: it checks a company against business registers (KVK, KBO/CBE), VIES VAT, OpenSanctions, its domain and country risk, is paid per call with x402 (USDC) or an API key, is also served as an MCP server, and is hosted in the EU. Start here: Free sandbox key, no wallet.

0.65-0.85 fresh for entity and risk checks (

1.50 KYB);

0.10 cached (

0.25 KYB) when available.

Tiered Pricing

Four core endpoints sell two quality tiers. Select with the X-Response-Quality header (default: fresh).

Endpoint	Cached	Fresh (default)
`POST /v1/entity/check`	$0.10	$0.85
`POST /v1/risk/score`	$0.10	$0.65
`POST /v1/reputation/score`	$0.10	$0.65
`POST /v1/kyb/check`	$0.25	$1.50

enhanced was retired on these four endpoints on 2026-09-24: it ran the same sources as fresh, so X-Response-Quality: enhanced is now quoted, charged and served at the fresh price, and the 402 body’s info.note says so. POST /v1/entity/deep-check keeps its own tiers (see x402 Protocol).

Quality Tier Definitions

Cached — Cheapest

Return Redis-cached result if available. Use when freshness isn’t critical and you want the lowest cost. Set X-Response-Quality: cached.

Fresh — Default

Always run full data source fan-out. This is the default behavior when no header is sent. Set X-Response-Quality: fresh.

Flat-Priced Endpoints

These endpoints have a single price regardless of quality tier:

Endpoint	Price
`GET /v1/reputation/history/{entity_hash}`	$0.10
`GET /v1/wallet/balance`	$0.10
`GET /v1/compliance/alerts`	$0.10
`GET /v1/compliance/readiness/{entity_id}`	$0.10
`POST /v1/reports/entity`	$1.50

POST /v1/reports/entity builds a per-entity report from one real check: registry identity, sanctions and PEP screening, domain signals, risk score, up to 3 findings, a per-source status table (a source that did not answer is shown unavailable, never clean) and an evidence hash. Send identifiers or the check_id of an earlier report’s check. Reading a stored report back with GET /v1/reports/{report_id} is free (?format=pdf for a PDF). Sandbox keys cannot create reports: they are built only from real checks.

Deep check

POST /v1/entity/deep-check has its own two tiers and no cached tier: deep is its fresh tier (the default) and extended is its enhanced tier.

Endpoint	Fresh (default)	Enhanced
`POST /v1/entity/deep-check`	$0.75	$1.50

deep (fresh): PEP and relative/close-associate matches from OpenSanctions, plus a Dutch Centraal Insolventieregister insolvency screen (NL only).
extended (enhanced): the same, plus adverse media screening against a global news index.
credit (Italy only, available when enabled): the same as deep, plus an Italian credit report from Openapi.com.

MCP Tool Endpoints

The MCP tools are priced per call like the REST API. check_entity and get_risk_score cost the same as the fresh tier of the endpoint they mirror; verify_wallet is free; get_compliance_report is billed as POST /v1/reports/entity (

1.50). `check_agent` and `get_trust_score` are unimplemented placeholders:

0.00, and hidden from the MCP tool list. The REST mirrors:

Endpoint	Tool	Price
`POST /v1/mcp/check-entity`	`check_entity`	$0.85
`POST /v1/mcp/risk-score`	`get_risk_score`	$0.65
`POST /v1/mcp/check-agent`	`check_agent`	$0.00
`POST /v1/mcp/trust-score`	`get_trust_score`	$0.00
`POST /v1/mcp/verify-wallet`	`verify_wallet`	$0.00

The Endpoint column shows the REST transport path. MCP clients invoke these by tool name with the arguments declared in the MCP manifest. Every REST mirror is a POST with a JSON body, verify_wallet included.

API Key Tier Upgrades

Pay via x402 to top up an API key’s prepaid balance (POST /v1/keys/upgrade/{tier} or POST /v1/keys/topup/{usd}). This is the only case where x402 payment is required even if you already hold an API key — see Authentication for the full tier ladder. The balance does not expire or reset.

Endpoint	Price	Unlocks
`POST /v1/keys/upgrade/indie`	$29	1,000 calls/mo
`POST /v1/keys/upgrade/starter`	$99	10,000 calls/mo
`POST /v1/keys/upgrade/growth`	$299	50,000 calls/mo
`POST /v1/keys/upgrade/pro`	$999	250,000 calls/mo

Free Endpoints

No payment or API key required:

Category	Endpoints
Health	`GET /health`
Key provisioning	`POST /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`

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 →

Prepaid API Key

Paid-tier API keys skip x402 on each call; the call is debited from the key’s prepaid balance instead. Top-ups are paid via x402. Free and sandbox keys hold no balance and pay per call.Tiers: Free (500/mo), Indie (

29), Starter (

99), Growth (

299), Pro (

999).Learn more →

USDC Amount Reference

For x402 integration — amounts use 6 decimal places (1_000_000 = $1.00):

Price	USDC 6-decimal	x402 `amount` field
$0.10	100,000	`"100000"`
$0.25	250,000	`"250000"`
$0.65	650,000	`"650000"`
$0.75	750,000	`"750000"`
$0.85	850,000	`"850000"`
$1.50	1,500,000	`"1500000"`
$29	29,000,000	`"29000000"`
$99	99,000,000	`"99000000"`
$299	299,000,000	`"299000000"`
$999	999,000,000	`"999000000"`

Dynamic Pricing

Query current list prices (and an indicative volume quote):

# 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"

The monthly_calls parameter returns an indicative volume quote only; the price charged per call is the list price. For volume pricing, ask for a quote.

Get Started

Core Concepts

Guides

Post-mortems

Tiered Pricing

Quality Tier Definitions

Flat-Priced Endpoints

Deep check

MCP Tool Endpoints

API Key Tier Upgrades

Free Endpoints

Payment Methods

x402 USDC Micropayments

Prepaid API Key

USDC Amount Reference

Dynamic Pricing

​Tiered Pricing

​Quality Tier Definitions

​Flat-Priced Endpoints

​Deep check

​MCP Tool Endpoints

​API Key Tier Upgrades

​Free Endpoints

​Payment Methods

x402 USDC Micropayments

Prepaid API Key

​USDC Amount Reference

​Dynamic Pricing

Tiered Pricing

Quality Tier Definitions

Flat-Priced Endpoints

Deep check

MCP Tool Endpoints

API Key Tier Upgrades

Free Endpoints

Payment Methods

USDC Amount Reference

Dynamic Pricing