onchaincheck
payment-ready until 2026-11-18
Pay-per-call data for AI agents: token risk scores and rug checks on six chains, wallet sanctions screening (OFAC) and name sanctions screening (OFAC, UN, UK), onchain data on Base, Ethereum, Arbitrum, Optimism, Polygon and Solana, web, company and AI text tools.
Compare: all sanctions screening APIs
Call it x402 v2
x402 v2
- Base URL
- https://onchaincheck.dev
- Payment
- x402 v2, header channel
$ curl -i 'https://onchaincheck.dev/address/exposure' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 8 paid routes on onchaincheck.dev
GET/address/exposure Base$0.01since 11-11
GET/address/screen Base$0.005since 11-11
GET/ai/sentiment Base$0.003since 11-11
GET/base/token Base$0.01since 11-11
GET/sanctions/search Base$0.005since 11-11
GET/token Base$0.01since 11-11
POST/verdict Base$0.01since 11-11
GET/web/audit Base$0.05since 11-11
Prices as captured in the 402 response: median $0.01 across the 8 endpoints, unchanged since first capture.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| GET | / | Has this wallet dealt with sanctioned addresses? Reads up to 4,000 of the wallet's latest transfers (native, internal, ERC-20, NFTs) on Base, Ethereum, Arbitrum, Optimism or Polygon and checks every counterparty against the OFAC SDN list's addresses: each sanctioned counterparty with entity, programs, direction, transfer count, assets and dates. Direct exposure only. Not legal advice. Errors return 4xx/5xx JSON and aren't charged. | $0.01 | Base | USDC | header | since 11-11 |
| GET | / | Is this address sanctioned? Screens a crypto address against the US Treasury OFAC SDN list's published digital currency addresses (ETH, USDC, USDT, XBT, SOL, TRX and others): the listed entity, programs and listing date on a match, or not found as of the list date. Adds whether it is a wallet (EOA) or contract on Base, Ethereum, Arbitrum, Optimism or Polygon, or a wallet or program-derived address on Solana. Not legal advice. Errors return 4xx/5xx JSON and aren't charged. | $0.005 | Base | USDC | header | since 11-11 |
| GET | / | Sentiment of a text (review, post, email, support ticket): positive, negative, neutral or mixed, a score from -1 to 1, confidence, up to 3 emotions and per-aspect sentiment. Up to 5,000 characters, any language. Llama 4 Scout on Workers AI. Errors return 4xx/5xx JSON and aren't charged. | $0.003 | Base | USDC | header | since 11-11 |
| GET | / | Rug check and due-diligence snapshot of an ERC-20 token on Base: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WETH or USDC pool on Uniswap v3 or Aerodrome. Facts only, no buy or sell opinion. Errors return 4xx/5xx JSON and aren't charged. | $0.01 | Base | USDC | header | since 11-11 |
| GET | / | Screens a person, company, vessel or aircraft name against the OFAC SDN and non-SDN lists, the UN Security Council consolidated list and the UK Sanctions List (about 27,000 entries with aliases). Fuzzy matching ignores word order, accents, punctuation and legal forms. Each match: 0-100 score, list, listed name, type, programs, aliases, birth date, nationality. Not legal advice. Errors return 4xx/5xx JSON and aren't charged. | $0.005 | Base | USDC | header | since 11-11 |
| GET | / | Is this token safe? Rug check for any token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a 0-100 risk score with plain reasons (mint, freeze, blacklist, fee, pause or trading-switch powers, upgradeable code, holder concentration, thin liquidity, a deployer whose earlier tokens lost their liquidity), the facts behind it, and USD price and liquidity. A fingerprint sent back as since returns what changed. Rules-based, not advice. Errors return 4xx/5xx JSON and aren't charged. | $0.01 | Base | USDC | header | since 11-11 |
| POST | / | Rug Radar verdict for a token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a grade (CLEAN, MID, SKETCHY, RUGGY), a one-liner, a short take and a shareable card, built from real onchain facts: the 0-100 risk score with its reasons and the deployer's record (did their earlier tokens lose liquidity?). Same call shape as quest verdicts: POST tokenAddress with an optional requestKey, echoed back. Rules-based, not financial advice. Errors return 4xx/5xx JSON and aren't charged. | $0.01 | Base | USDC | header | since 11-11 |
| GET | / | Website audit in one call: HTTP security headers (HSTS, CSP, clickjacking, cookies, mixed content), on-page SEO (title, meta description, h1, canonical, noindex, robots.txt, sitemap, Open Graph, structured data), static WCAG 2.1 accessibility checks (alt text, labels, link and button names, lang, zoom), server response time and page weight, and the tech stack. Findings with severity and a 0-100 score per section. Repeat audits list what changed since the previous one. | $0.05 | Base | USDC | header | since 11-11 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 8 payloads captured by the monitor.
156 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/verdict",
"tags": [
"token-verdict",
"token-safety",
"rug-check",
"token-risk",
"scam-check"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Rug Radar verdict for a token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a grade (CLEAN, MID, SKETCHY, RUGGY), a one-liner, a short take and a shareable card, built from real onchain facts: the 0-100 risk score with its reasons and the deployer's record (did their earlier tokens lose liquidity?). Same call shape as quest verdicts: POST tokenAddress with an optional requestKey, echoed back. Rules-based, not financial advice. Errors return 4xx/5xx JSON and aren't charged.",
"serviceName": "OnchainCheck Token Risk Check"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"requestKey": "verdict-3f7b2c1e-8a4d",
"tokenAddress": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"card": "https://onchaincheck.dev/card?v=WyJDTEVBTiIsIlNoaXBzIHdpdGggYW4gb2ZmIHN3aXRjaCIs… (signed link, truncated in this example)",
"name": "Degen",
"take": "$DEGEN: 15/100 risk. The owner can pause all transfers. Ownership is not renounced. $133k liquidity.",
"chain": "base",
"grade": "CLEAN",
"level": "low",
"price": "$0.01",
"score": 15,
"token": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed",
"symbol": "DEGEN",
"reasons": [
"can-pause",
"owner-not-renounced"
],
"deployer": null,
"oneLiner": "Ships with an off switch",
"priceUsd": 0.00095954,
"disclaimer": "Rules-based read of onchain facts. Not financial advice.",
"requestKey": "verdict-3f7b2c1e-8a4d",
"liquidityUsd": 133000
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"tokenAddress"
],
"properties": {
"chain": {
"enum": [
"base",
"eth",
"arbitrum",
"optimism",
"polygon",
"solana"
],
"type": "string",
"description": "Chain; defaults to solana for base58 addresses, otherwise base"
},
"requestKey": {
"type": "string",
"pattern": "^[A-Za-z0-9_.:-]{8,128}$",
"description": "Optional caller-chosen id, echoed back in the response"
},
"tokenAddress": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{40}|[1-9A-HJ-NP-Za-km-z]{32,44})$",
"description": "Token contract (EVM) or mint (Solana) address"
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
} Other captured 402 responses (7)
Captured payload 2 of 8
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/address/screen",
"tags": [
"sanctions-screening",
"ofac",
"wallet-screening",
"aml",
"address-screen"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Is this address sanctioned? Screens a crypto address against the US Treasury OFAC SDN list's published digital currency addresses (ETH, USDC, USDT, XBT, SOL, TRX and others): the listed entity, programs and listing date on a match, or not found as of the list date. Adds whether it is a wallet (EOA) or contract on Base, Ethereum, Arbitrum, Optimism or Polygon, or a wallet or program-derived address on Solana. Not legal advice. Errors return 4xx/5xx JSON and aren't charged.",
"serviceName": "OnchainCheck Wallet Safety Checks"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "eth",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96"
}
},
"output": {
"type": "json",
"example": {
"chain": "eth",
"notes": "Screens only the digital currency addresses that OFAC publishes on its SDN list, from a copy dated listAsOf. It is not legal advice and not a complete sanctions or AML check: it doesn't cover addresse… (240 chars, truncated in this example)",
"result": "on the OFAC SDN list",
"account": {
"kind": "wallet (EOA) or empty address",
"isContract": false
},
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"matches": [
{
"entity": "Lazarus Group",
"currency": "ETH",
"entityId": 27307,
"programs": [
"DPRK3"
],
"listedAddress": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"entityListedOn": "2019-09-13"
}
],
"listAsOf": "2026-10-21",
"sanctioned": true,
"listAgeDays": 2,
"listAddresses": 1065
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"chain": {
"enum": [
"base",
"eth",
"arbitrum",
"optimism",
"polygon",
"solana",
"other"
],
"type": "string",
"description": "Chain for the wallet/contract check; defaults to base for 0x addresses, solana for Solana addresses, otherwise other (list check only)"
},
"address": {
"type": "string",
"pattern": "^[A-Za-z0-9:._-]{14,128}$",
"description": "Address to screen: 0x (EVM), base58 (Solana), or any other currency's address with chain=other"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 3 of 8
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/address/exposure",
"tags": [
"sanctions",
"ofac",
"compliance",
"aml",
"wallet-screening"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Has this wallet dealt with sanctioned addresses? Reads up to 4,000 of the wallet's latest transfers (native, internal, ERC-20, NFTs) on Base, Ethereum, Arbitrum, Optimism or Polygon and checks every counterparty against the OFAC SDN list's addresses: each sanctioned counterparty with entity, programs, direction, transfer count, assets and dates. Direct exposure only. Not legal advice. Errors return 4xx/5xx JSON and aren't charged.",
"serviceName": "OnchainCheck Wallet Safety Checks"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "eth",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96"
}
},
"output": {
"type": "json",
"example": {
"risk": "direct exposure to sanctioned addresses",
"chain": "eth",
"notes": "Direct counterparties only, from the wallet's latest transfers (scanned.complete is false when it has more than 2,000 in a direction). Checked against the addresses OFAC publishes on its SDN list as o… (240 chars, truncated in this example)",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"exposed": true,
"scanned": {
"to": "2026-10-08T21:22:35.000Z",
"from": "2022-03-23T13:16:57.000Z",
"complete": false,
"transfers": 2363,
"counterparties": 308
},
"listAsOf": "2026-11-06",
"checkedAt": "2026-11-08T17:33:50.808Z",
"listAddresses": 1080,
"sanctionedCounterparties": [
{
"assets": [
"ETH"
],
"entity": "Lazarus Group",
"lastAt": "2022-05-04T07:32:25.000Z",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"firstAt": "2022-05-04T07:32:25.000Z",
"entityId": 27307,
"programs": [
"DPRK3"
],
"direction": "sent to",
"exampleTx": "0xa0427076e8a3ae2aca5e94928c71a54bbc02bd7c56930f4b126336a21baebc2d",
"transfers": 1,
"counterparty": "0x08723392Ed15743cc38513C4925f5e6be5c17243"
},
{
"assets": [
"ETH"
],
"entity": "Lazarus Group",
"lastAt": "2022-05-03T08:23:28.000Z",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"firstAt": "2022-05-03T08:23:28.000Z",
"entityId": 27307,
"programs": [
"DPRK3"
],
"direction": "sent to",
"exampleTx": "0xfd578594dfc23e8ec1403e79ab96cff14c4941b03bbd67674df925faecf32eec",
"transfers": 1,
"counterparty": "0x3e37627dEAA754090fBFbb8bd226c1CE66D255e9"
},
{
"assets": [
"ETH"
],
"entity": "Lazarus Group",
"lastAt": "2022-04-27T11:05:32.000Z",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"firstAt": "2022-04-27T11:05:32.000Z",
"entityId": 27307,
"programs": [
"DPRK3"
],
"direction": "sent to",
"exampleTx": "0xadee9d8ba4bed9247c8eac99a4a028f24e3cb9544e3f395f1fd661cbacf99a21",
"transfers": 1,
"counterparty": "0xF7B31119c2682c88d88D455dBb9d5932c65Cf1bE"
},
{
"assets": [
"ETH"
],
"entity": "Lazarus Group",
"lastAt": "2022-04-24T06:47:49.000Z",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"firstAt": "2022-04-24T06:47:49.000Z",
"entityId": 27307,
"programs": [
"DPRK3"
],
"direction": "sent to",
"exampleTx": "0x9f6a19c9fed374450dcb1657d5e404ec8a60be752b07c1db1f21049d7bf8d61a",
"transfers": 1,
"counterparty": "0x35fB6f6DB4fb05e6A4cE86f2C93691425626d4b1"
},
{
"assets": [
"ETH"
],
"entity": "Lazarus Group",
"lastAt": "2022-04-21T07:19:19.000Z",
"address": "0x098B716B8Aaf21512996dC57EB0615e2383E2f96",
"firstAt": "2022-04-21T07:19:19.000Z",
"entityId": 27307,
"programs": [
"DPRK3"
],
"direction": "sent to",
"exampleTx": "0x899ad3622b561e9175be78c1c819242ca60279430ed49cce488fd3803a1511d4",
"transfers": 1,
"counterparty": "0x53b6936513e738f44FB50d2b9476730C0Ab3Bfc1"
}
],
"sanctionedCounterpartyCount": 7
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"chain": {
"enum": [
"base",
"eth",
"arbitrum",
"optimism",
"polygon"
],
"type": "string",
"description": "Chain to scan (default base)"
},
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "EVM wallet address"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 4 of 8
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/token",
"tags": [
"token-safety",
"rug-check",
"token-security",
"token-risk",
"scam-check"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Is this token safe? Rug check for any token on Base, Ethereum, Arbitrum, Optimism, Polygon or Solana: a 0-100 risk score with plain reasons (mint, freeze, blacklist, fee, pause or trading-switch powers, upgradeable code, holder concentration, thin liquidity, a deployer whose earlier tokens lost their liquidity), the facts behind it, and USD price and liquidity. A fingerprint sent back as since returns what changed. Rules-based, not advice. Errors return 4xx/5xx JSON and aren't charged.",
"serviceName": "OnchainCheck Token Risk Check"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"address": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed"
}
},
"output": {
"type": "json",
"example": {
"name": "Degen",
"risk": {
"level": "low",
"score": 15,
"reasons": [
{
"code": "can-pause",
"text": "The owner can pause all transfers.",
"points": 10
},
{
"code": "owner-not-renounced",
"text": "Ownership is not renounced.",
"points": 5
}
],
"summary": "Low risk: the owner can pause all transfers; ownership is not renounced."
},
"asset": {
"known": false
},
"chain": "base",
"flags": {
"canMint": false,
"ownerCanAct": true,
"upgradeable": false,
"canBlacklist": false,
"noLiquidPool": false,
"canChangeFees": false,
"thinLiquidity": false
},
"notes": "Privileged functions are detected from bytecode selectors and may have false positives or misses. Liquidity is the WETH or USDC held by the deepest Uniswap v3 or aerodrome pool found.",
"owner": "0x704Ec5C12Ca20a293C2C0B72B22619A4231f3c0d",
"proxy": {
"upgradeable": false
},
"watch": {
"changes": null,
"fingerprint": "eyJzIjoxNSwiciI6WyJjYW4tcGF1c2UiLCJvd25lci1ub3QtcmVub3VuY2VkIl0sImEiOnsib3duZXIiOiIweDcwNEVjNUMxMkNhMjBhMjkzQzJDMEI3MkIyMjYxOUE0MjMxZjNjMGQiLCJpbXBsZW1lbnRhdGlvbiI6bnVsbCwicHJveHlBZG1pbiI6bnVsbH0sImwi… (240 chars, truncated in this example)"
},
"market": {
"dex": "uniswap-v3",
"pool": "0xc9034c3E7F58003E6ae0C8438e7c8f4598d5ACAA",
"priceUsd": 0.00095954,
"feeTierBps": 30,
"pairedWith": "WETH",
"poolsFound": 10,
"fullyDilutedValueUsd": 34510000,
"quoteSideLiquidityUsd": 133000
},
"symbol": "DEGEN",
"address": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed",
"decimals": 18,
"nativeUsd": {
"price": 2402.09,
"source": "Chainlink ETH/USD",
"symbol": "ETH",
"updatedAt": "2026-10-23T06:08:55.000Z"
},
"totalSupply": 35967154646.5,
"ownershipRenounced": false,
"privilegedFunctions": {
"mint": false,
"pause": true,
"setFees": false,
"blacklist": false,
"tradingSwitch": false,
"maxTransaction": false
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"chain": {
"enum": [
"base",
"eth",
"arbitrum",
"optimism",
"polygon",
"solana"
],
"type": "string",
"description": "Chain the token is on; defaults to solana for base58 addresses, otherwise base"
},
"since": {
"type": "string",
"pattern": "^[A-Za-z0-9_-]{1,1000}$",
"description": "watch.fingerprint from an earlier call; adds what changed since then"
},
"address": {
"type": "string",
"pattern": "^(0x[0-9a-fA-F]{40}|[1-9A-HJ-NP-Za-km-z]{32,44})$",
"description": "Token contract (EVM) or mint (Solana) address"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 5 of 8
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/sanctions/search",
"tags": [
"sanctions-search",
"ofac",
"name-screening",
"kyc",
"aml"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Screens a person, company, vessel or aircraft name against the OFAC SDN and non-SDN lists, the UN Security Council consolidated list and the UK Sanctions List (about 27,000 entries with aliases). Fuzzy matching ignores word order, accents, punctuation and legal forms. Each match: 0-100 score, list, listed name, type, programs, aliases, birth date, nationality. Not legal advice. Errors return 4xx/5xx JSON and aren't charged.",
"serviceName": "OnchainCheck Sanctions Name Screening"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "Banco Nacional de Cuba"
}
},
"output": {
"type": "json",
"example": {
"lists": [
"OFAC SDN",
"OFAC consolidated (non-SDN)",
"UN Security Council",
"UK Sanctions List"
],
"match": true,
"notes": "Screened against OFAC's SDN and non-SDN lists, the UN Security Council consolidated list and the UK Sanctions List as of listAsOf (refreshed with each release). A match is a lead to review, not a dete… (240 chars, truncated in this example)",
"query": "Banco Nacional de Cuba",
"matches": [
{
"url": "https://sanctionssearch.ofac.treas.gov/Details.aspx?id=306",
"list": "OFAC SDN",
"name": "BANCO NACIONAL DE CUBA",
"type": "entity",
"score": 100,
"listId": "306",
"aliases": [
"NATIONAL BANK OF CUBA"
],
"programs": [
"CUBA"
],
"dateOfBirth": null,
"matchedName": "BANCO NACIONAL DE CUBA",
"nationality": null
}
],
"listAsOf": "2026-11-08",
"minScore": 85,
"entriesScreened": 27476
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"pattern": "^.{2,200}$",
"description": "Name to screen (Vladimir Putin, Banco Nacional de Cuba)"
},
"type": {
"enum": [
"individual",
"entity",
"vessel",
"aircraft"
],
"type": "string",
"description": "Only match this kind of entry"
},
"lists": {
"type": "string",
"pattern": "^[a-z,]{2,20}$",
"description": "Only these lists, comma-separated: ofac, un, uk (default all)"
},
"minScore": {
"type": "string",
"pattern": "^\\d{2,3}$",
"description": "Lowest match score to return, 50-100 (default 85)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 6 of 8
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/base/token",
"tags": [
"base",
"onchain",
"erc20",
"token",
"wallet"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Rug check and due-diligence snapshot of an ERC-20 token on Base: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WETH or USDC pool on Uniswap v3 or Aerodrome. Facts only, no buy or sell opinion. Errors return 4xx/5xx JSON and aren't charged.",
"serviceName": "OnchainCheck Base Onchain Data"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed"
}
},
"output": {
"type": "json",
"example": {
"name": "Degen",
"risk": {
"level": "low",
"score": 15,
"reasons": [
{
"code": "can-pause",
"text": "The owner can pause all transfers.",
"points": 10
},
{
"code": "owner-not-renounced",
"text": "Ownership is not renounced.",
"points": 5
}
],
"summary": "Low risk: the owner can pause all transfers; ownership is not renounced."
},
"asset": {
"known": false
},
"chain": "base",
"flags": {
"canMint": false,
"ownerCanAct": true,
"upgradeable": false,
"canBlacklist": false,
"noLiquidPool": false,
"canChangeFees": false,
"thinLiquidity": false
},
"notes": "Privileged functions are detected from bytecode selectors and may have false positives or misses. Liquidity is the WETH or USDC held by the deepest Uniswap v3 or aerodrome pool found.",
"owner": "0x704Ec5C12Ca20a293C2C0B72B22619A4231f3c0d",
"proxy": {
"upgradeable": false
},
"market": {
"dex": "uniswap-v3",
"pool": "0xc9034c3E7F58003E6ae0C8438e7c8f4598d5ACAA",
"priceUsd": 0.00095954,
"feeTierBps": 30,
"pairedWith": "WETH",
"poolsFound": 10,
"fullyDilutedValueUsd": 34510000,
"quoteSideLiquidityUsd": 133000
},
"symbol": "DEGEN",
"address": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed",
"decimals": 18,
"nativeUsd": {
"price": 2402.09,
"source": "Chainlink ETH/USD",
"symbol": "ETH",
"updatedAt": "2026-10-23T06:08:55.000Z"
},
"totalSupply": 35967154646.5,
"ownershipRenounced": false,
"privilegedFunctions": {
"mint": false,
"pause": true,
"setFees": false,
"blacklist": false,
"tradingSwitch": false,
"maxTransaction": false
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "Token contract address on Base"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 7 of 8
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/ai/sentiment",
"tags": [
"sentiment-analysis",
"summarization",
"keyword-extraction",
"rewriting",
"nlp"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Sentiment of a text (review, post, email, support ticket): positive, negative, neutral or mixed, a score from -1 to 1, confidence, up to 3 emotions and per-aspect sentiment. Up to 5,000 characters, any language. Llama 4 Scout on Workers AI. Errors return 4xx/5xx JSON and aren't charged.",
"serviceName": "OnchainCheck AI Text Analysis"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"text": "Setup took five minutes and support answered fast, but the dashboard is slow and the pricing page is confusing."
}
},
"output": {
"type": "json",
"example": {
"model": "llama-4-scout",
"score": -0.2,
"aspects": [
{
"aspect": "setup",
"sentiment": "positive"
},
{
"aspect": "support",
"sentiment": "positive"
},
{
"aspect": "dashboard",
"sentiment": "negative"
},
{
"aspect": "pricing page",
"sentiment": "negative"
}
],
"emotions": [
"disgust",
"anger",
"neutral"
],
"sentiment": "mixed",
"characters": 111,
"confidence": 0.8
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"text"
],
"properties": {
"text": {
"type": "string",
"pattern": "^[\\s\\S]+$",
"maxLength": 5000,
"description": "The text, up to 5,000 characters"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Captured payload 8 of 8
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2ECB9E1fcca7A62758c679F11bC3241466d181d8",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://onchaincheck.dev/web/audit",
"tags": [
"website-audit",
"seo-audit",
"accessibility",
"security-headers",
"site-audit"
],
"iconUrl": "https://onchaincheck.dev/icon.png",
"mimeType": "application/json",
"description": "Website audit in one call: HTTP security headers (HSTS, CSP, clickjacking, cookies, mixed content), on-page SEO (title, meta description, h1, canonical, noindex, robots.txt, sitemap, Open Graph, structured data), static WCAG 2.1 accessibility checks (alt text, labels, link and button names, lang, zoom), server response time and page weight, and the tech stack. Findings with severity and a 0-100 score per section. Repeat audits list what changed since the previous one.",
"serviceName": "OnchainCheck Website Audit & Web Extract"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://stripe.com"
}
},
"output": {
"type": "json",
"example": {
"seo": {
"h1": [
"Financial infrastructure to grow your revenue. Accept payments, handle business banking, 1 and implement custom revenue models—from your first transaction to your billionth."
],
"pass": true,
"score": 100,
"title": "Stripe | Financial Infrastructure to Grow Your Revenue",
"sitemap": true,
"findings": [],
"canonical": "https://stripe.com/",
"robotsTxt": true,
"description": "Stripe is a financial services platform that helps all types of businesses accept payments, build flexible billing models, and manage money movement."
},
"url": "https://stripe.com/",
"pass": true,
"tech": [
{
"name": "Cloudflare",
"category": "CDN"
},
{
"name": "WooCommerce",
"category": "E-commerce"
},
{
"name": "Next.js",
"category": "Framework"
},
{
"name": "React",
"category": "JavaScript library"
}
],
"notes": "One fetch of the page from Cloudflare's network, plus robots.txt, the sitemap and the http:// address. score is 0-100 (security 30%, SEO 30%, accessibility 25%, performance 15%); pass means no critica… (240 chars, truncated in this example)",
"score": 96,
"status": 200,
"finalUrl": "https://stripe.com/",
"security": {
"pass": true,
"score": 98,
"findings": [
{
"id": "missing-permissions-policy",
"detail": "No Permissions-Policy header",
"severity": "minor"
}
]
},
"auditedAt": "2026-11-05T05:44:29.163Z",
"performance": {
"pass": true,
"score": 78,
"metrics": {
"images": 35,
"scripts": 82,
"ttfb_ms": 61,
"dom_nodes": 1689,
"redirects": 0,
"compressed": null,
"html_bytes": 665986,
"stylesheets": 4,
"cache_control": null,
"third_party_hosts": 1,
"inline_script_bytes": 223021
},
"findings": [
{
"id": "large-html",
"detail": "HTML is 650 KB",
"severity": "moderate"
},
{
"id": "high-dom-complexity",
"detail": "1689 elements (recommended <= 1500)",
"severity": "moderate"
},
{
"id": "many-scripts",
"detail": "82 external scripts",
"severity": "moderate"
},
{
"id": "large-inline-scripts",
"detail": "218 KB of inline script",
"severity": "minor"
},
{
"id": "no-compression",
"detail": "The HTML wasn't served compressed",
"severity": "minor"
}
]
},
"accessibility": {
"pass": true,
"score": 98,
"coverage": "Static checks from the HTML (WCAG 2.1 A/AA: 1.1.1, 1.3.1, 1.4.4, 2.4.2, 2.4.4, 3.1.1, 4.1.2, heading order). No colour-contrast or script-rendered content checks.",
"findings": [
{
"id": "empty-heading",
"detail": "1 empty headings",
"severity": "minor"
}
]
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"pattern": "^\\S+$",
"maxLength": 2000,
"description": "Page URL or domain to audit (https://example.org/pricing)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
97/100 Strong
#12 of 492 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 100% uptime since 11-11
- Compliance
- A 14/14 checks pass
- Price
- $0.003 to $0.05 p33 in Data
- Risk
- clean no risk flag
- Traction
- ---
14/14 compliance checks
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
402 terms unchanged since 2026-11-11. Last up 2026-11-11.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
What the score read on this service: status online, 100% uptime, latest daily rollup (no 30d window yet), 186ms response p95, x402 compliance 14 of 14, $0.003 price against the category. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 492 listings, this one among them: the same 492 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
All measured facts
What it does
Pay-per-call data for AI agents: token risk scores and rug checks on six chains, wallet sanctions screening (OFAC) and name sanctions screening (OFAC, UN, UK), onchain data on Base, Ethereum, Arbitrum, Optimism, Polygon and Solana, web, company and AI text tools. Every endpoint is also an MCP tool at /mcp. Failed requests are not charged.
onchaincheck is a listed x402 Data API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-10-13 to 2026-11-11 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Data
- uptime · latest daily rollup
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 186ms
- avg response
- 186ms
- total checks
- 1
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.003
- price (max)
- $0.05
- category percentile (min)
- p33 in Data
- category percentile (max)
- p58 in Data
- endpoints / prices
- 8 / 4
- model
- tiered
- stability
- 100%
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 18d
- registrar
- CloudFlare, Inc.
- hosting
- custom
- domain created
- 2026-10-24
Identity facts, not a risk score.
On-chain traction has not been assessed for this service yet.
- member since
- 2026-11-11
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 370ms | 8 | |
| Online | 402 | 1805ms | 8 | |
| Online | 402 | 258ms | 8 | |
| Online | 402 | 186ms | 8 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
On-chain volume
On-chain traction has not been assessed for this service yet.
Uptime no completed-day data
- Uptime
- no completed-day data
On-chain traction has not been assessed for this service yet.
More charts
Response time daily average, ms min 222ms, avg 222ms, max 222ms
10-13 to 11-11* UTC
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
* today so far, partial (UTC).
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|
| 2026-11-11* | 100% | 222.00ms | 14/14 | p33 | 3/6 |
Alternatives in Data
Imagio Relay · 57 x402 tools for agents (web-intel, trade math, infra, docs) strong 98/100 100% up 30d --- 30d
5 of 491 other ranked services in Data, ordered by the same measured score.
Own this service?
Keep this listing accurate. Ownership is proven with a domain check and every change is reviewed by hand.
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Markdown
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HTML, live uptime variant
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Delisting
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