Crypto AML API · REST · x402
Two REST endpoints screen an address or a transaction hash and hand back a 0–100 score with every contributing signal named — source, entity, category. Authenticate with a header, no SDK to install. Issue a key yourself in the dashboard, or skip the account entirely and pay per call over x402.
no card required · no subscription · pay per check
or check it in Telegram — @traqlcheckbot
BitcoinEthereumBNB Smart ChainTRONTON
// check an address — no signup
partial result — some sources were unavailable
3 free demo checks · no signup · or try the bot
// two endpoints
Base URL is https://api.traql.io. Every call carries
your key in an X-API-Key header and gets back the same
JSON shape, whether it's an address or a transaction. The interactive reference
at api.traql.io/docs
lets you fire a real call from the browser before you write a line of code.
CHECK AN ADDRESS
Chain and address in, verdict out — direct label matches plus one hop of traced counterparty exposure.
# with a key — full verdict with itemized reasons
curl -s https://api.traql.io/v1/check/address \
-H "X-API-Key: traql_..." \
-d '{"chain":"ethereum","address":"0x8589…DA16"}'CHECK A TRANSACTION
Pass a hash and traql fetches the transaction, decodes the token transfers inside it, and screens both sides. Or pass from and to to screen a transfer before you broadcast it.
# traql pulls the tx, decodes the transfers inside it,
# and screens both sides of the largest one
curl -s https://api.traql.io/v1/screen/transaction \
-H "X-API-Key: traql_..." \
-d '{"chain":"ethereum","tx_hash":"0xf35b…7c2a"}'// the response
{
"result": {
"score": 94,
"band": "critical",
"flags": ["sanctions", "mixer"],
"reasons": [
{ "source": "ofac_sdn",
"entity": "Tornado Cash",
"category": "sanctions", … }
]
}
}
score, band and
flags summarise the verdict; each entry in
reasons names the source
that matched, the entity behind it and its
category — the full response also carries a
severity and a confidence per reason.
ALSO AVAILABLE
npx -y @traql/mcp gives Claude Code, Claude Desktop, Cursor or any other MCP client the same two endpoints as direct tool calls — check_address and screen_transaction — so an agent can screen a counterparty before it acts, not just report on one after the fact.
// keys and balance
No request form, no waiting on anyone. Sign in, open API keys and generate one — it's ready to use immediately.
The secret is displayed a single time, at creation. traql doesn't keep a copy to show you again — store it then, or generate a new one.
Keys spend the same balance as the web checker. Top up once and use it from either — nothing separate to track.
Two JSON endpoints and an X-API-Key header — any language that can POST JSON is already set up.
Rotate or revoke a key at any time from the same screen — a revoked key stops working immediately, and the balance it drew from stays yours.
// keyless
PAY-AS-YOU-GO · NO ACCOUNT
Call either endpoint with no key at all and traql answers with a 402 and an x402 payment challenge. Settle it in USDC on Base and the same call, retried, comes back with a verdict — no signup, no human clicking a button in between.
// pricing
No subscriptions, no seats. A pack tops up your account balance, and API keys spend from the same balance as the web checker. Checks never expire, and the bigger the pack, the less each one costs.
FREE
$0
3 checks to start
10 CHECKS
$4.50
$0.45 / check
POPULAR
50 CHECKS
$18
$0.36 / check
SAVE 20%
200 CHECKS
$56
$0.28 / check
SAVE 38%
500 CHECKS
$115
$0.23 / check
SAVE 49%
1 000 CHECKS
$200
$0.20 / check
SAVE 56%
// faq
Create an account, verify your email and issue a key yourself in the dashboard, under API keys. The secret is shown once at creation — store it then, because traql doesn't keep a copy to show you again. You can rotate or revoke a key at any time from the same screen.
With an account, a call spends one check from your balance — 3 checks are free on signup, and packs bring the price down to $0.20 per check at volume. Without an account, you can pay per call in USDC over x402: $0.50 for an address check, $1.00 for a transaction check.
No. There are two REST endpoints — check an address, check a transaction — authenticated with a plain X-API-Key header. If your language can send a JSON POST and read a JSON response, you don't need a client library.
Yes. Your account holds one balance of checks, and it doesn't matter whether you spend it in the browser or through an API key — there's nothing separate to top up.
x402 is a way to pay per call in USDC on Base without an account or an API key — useful for an autonomous agent that has a funded wallet but no human to sign up. Call the endpoint with no key, get back a 402 with a payment challenge, settle it, and the verdict comes back on the retry. The response is a summary verdict rather than the full itemised reasons, and it costs more per check than any pack — that's the trade for skipping the account.
Bitcoin, Ethereum, BNB Smart Chain, TRON and TON. Scoring is chain-scoped: the same address string is assessed independently on each network you check it on.
A score from 0 to 100, a risk band, a list of flags, and a reasons array — each reason names its source, the entity behind it and its category. The full response also carries severity and confidence per reason. The interactive reference at api.traql.io/docs has the complete schema and lets you try a call from the browser.
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