payment-ready until 2026-10-06
108 pay-per-call AI and data APIs for agents, including 72 LLMs, image, video, audio, web, code, crypto, wallet, travel, and utility endpoints. Pay per request in USDC on Base, MegaETH, or Solana with no API keys or subscriptions.
Pay from $0.001 to $0.02 per request in USDC on Base / Solana, settled onchain via the x402 protocol, no signup, no API key needed.
measured since 2026-02-07 (start of our harvest window) · $236.73 all-time · settled via coinbase
VERDICT
ranking generation 3strong 93/100 #3 of 162 in AI by measured score
What the score read on this service: status online, 100% uptime 30d, 541ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. 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.
It is a score inside AI, 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 162 listings, this one among them. That set is wider than the 162 the position above is counted against, 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.
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.
ALTERNATIVES IN AI
Other AI services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).
| SERVICE | BAND | SCORE | UPTIME 30D | VOL 30D |
|---|---|---|---|---|
| Otto AI | strong | 95 | 100% | $56.13 |
| NetIntel | strong | 94 | 100% | $16.76 |
| GlianaAI | solid | 93 | 100% | $68.10 |
| Agent402.tools | solid | 92 | 99.7% | $138.77 |
| vaaya | solid | 90 | 100% | $44.03 |
5 of 161 other ranked services in AI · see the whole category
ASSESSMENT
updated 2h agoThe parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.
reliability 100%
- uptime · latest daily rollup
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 541ms
- avg response
- 281ms
- total checks
- 2,695
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.001 to $0.02 (p11 in AI)
- price (min)
- $0.001
- price (max)
- $0.02
- category percentile (min)
- p11 in AI
- category percentile (max)
- p35 in AI
- endpoints / prices
- 13 / 6
- model
- tiered
- stability
- 100%
risk clean
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
- 227d
- registrar
- GoDaddy.com, LLC
- hosting
- custom
- domain created
- 2026-02-08
Identity facts, not a risk score.
traction $27.997911 30d · 67 buyers
- volume 30d
- $27.997911
- buyers 30d
- 67
- settlements 30d
- 334
- measured since
- 2026-02-07 (start of our harvest window)
- last settlement
- 2026-09-29
- top buyer share
- 44% of 30d volume (address, not entity)
- trend 7d vs 30d
- 1.95x the 30d daily rate
- networks
- eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $236.73
- settlements all-time
- 34,079
- median settlement 30d
- $0.01
- max settlement 30d
- $4.130042
- settled via
- coinbase ($28.00, 334 tx)
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is part of the ranking score: a higher share lowers the traction part of the score, by up to half when one address holds all 30d volume.
WHAT IT DOES
ai-derivedNo AI synthesis has been produced for this service yet.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| GET | /api/crypto/history | $0.003 | Base/Solana | USDC | header | |
| GET | /api/crypto/markets | $0.002 | Base/Solana | USDC | header | |
| GET | /api/crypto/price | $0.001 | Base/Solana | USDC | header | |
| GET | /api/crypto/search | $0.001 | Base/Solana | USDC | header | |
| GET | /api/crypto/trending | $0.001 | Base/Solana | USDC | header | |
| GET | /api/ens/resolve | $0.001 | Base/Solana | USDC | header | |
| GET | /api/ens/reverse | $0.001 | Base/Solana | USDC | header | |
| GET | /api/ipfs/get | $0.001 | Base/Solana | USDC | header | |
| GET | /api/token/metadata | $0.002 | Base/Solana | USDC | header | |
| GET | /api/travel/flights | $0.02 | Base/Solana | USDC | header | |
| GET | /api/travel/hotels | $0.02 | Base/Solana | USDC | header | |
| GET | /api/web/scrape | $0.005 | Base/Solana | USDC | header | |
| GET | /api/web/screenshot | $0.01 | Base/Solana | USDC | header |
13 endpoints
REQUEST / RESPONSE EXAMPLE
An unpaid request to GET /api/crypto/history returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
// request
curl -i 'https://x402engine.app/api/crypto/history'
// 402 response (captured by monitor) · 13 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "20000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/travel/flights",
"mimeType": "application/json",
"description": "Search flights via Google Flights (SerpApi). Returns best flights, prices, airlines, and price insights."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"adults": "1",
"origin": "JFK",
"currency": "USD",
"destination": "LAX",
"travelClass": "1",
"departureDate": "2026-04-15"
}
}
},
"schema": {
"type": "object",
"$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": [
"origin",
"destination",
"departureDate"
],
"properties": {
"stops": {
"type": "string",
"description": "0=Nonstop only, 1=Up to 1 stop, 2=Up to 2 stops"
},
"adults": {
"type": "string",
"default": "1",
"description": "Number of adult passengers"
},
"origin": {
"type": "string",
"example": "JFK",
"description": "Departure airport IATA code"
},
"children": {
"type": "string",
"description": "Number of children"
},
"currency": {
"type": "string",
"default": "USD",
"description": "Currency code (e.g. USD, EUR)"
},
"maxPrice": {
"type": "string",
"description": "Maximum price filter"
},
"returnDate": {
"type": "string",
"description": "Return date for round trips (YYYY-MM-DD)"
},
"destination": {
"type": "string",
"example": "LAX",
"description": "Arrival airport IATA code"
},
"travelClass": {
"type": "string",
"default": "1",
"description": "1=Economy, 2=Premium Economy, 3=Business, 4=First"
},
"departureDate": {
"type": "string",
"example": "2026-04-15",
"description": "Departure date (YYYY-MM-DD)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "5000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/web/scrape",
"mimeType": "application/json",
"description": "Scrape any URL and get clean markdown content — ideal for extracting readable text from web pages"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://example.com"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"example": "https://example.com",
"description": "URL to scrape"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/ipfs/get",
"mimeType": "application/json",
"description": "Fetch a file from IPFS by CID via gateway"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"cid": "QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG"
}
}
},
"schema": {
"type": "object",
"$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": [
"cid"
],
"properties": {
"cid": {
"type": "string",
"example": "QmYwAPJzv5CZsnA625s3Xf2nemtYgPpHdWEz79ojWnPbdG",
"description": "IPFS CID"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "3000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "3000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/history",
"mimeType": "application/json",
"description": "Historical price, market cap, and volume data for any coin"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"id": "bitcoin",
"days": "30",
"currency": "usd",
"interval": "daily"
}
}
},
"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": [
"id"
],
"properties": {
"id": {
"type": "string",
"example": "bitcoin",
"description": "Coin ID"
},
"days": {
"type": "string",
"default": "30",
"example": "30",
"description": "Days of history (1-365 or \"max\")"
},
"currency": {
"type": "string",
"default": "usd",
"example": "usd",
"description": "Fiat currency"
},
"interval": {
"type": "string",
"example": "daily",
"description": "Data interval (daily)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/markets",
"mimeType": "application/json",
"description": "Market rankings with price, volume, market cap — filterable by category"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"page": 1,
"limit": 100,
"order": "market_cap_desc",
"category": "decentralized-finance-defi",
"currency": "usd"
}
}
},
"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",
"properties": {
"page": {
"type": "number",
"default": 1,
"example": 1,
"description": "Page number (1-500)"
},
"limit": {
"type": "number",
"default": 100,
"example": 100,
"description": "Number of results (1-250)"
},
"order": {
"type": "string",
"default": "market_cap_desc",
"example": "market_cap_desc",
"description": "Sort order"
},
"category": {
"type": "string",
"example": "decentralized-finance-defi",
"description": "Filter by category ID"
},
"currency": {
"type": "string",
"default": "usd",
"example": "usd",
"description": "Fiat currency for pricing"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/search",
"mimeType": "application/json",
"description": "Search for a coin by name or symbol to get its CoinGecko ID"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "bitcoin"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"q"
],
"properties": {
"q": {
"type": "string",
"example": "bitcoin",
"description": "Search query (coin name or symbol)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/ens/reverse",
"mimeType": "application/json",
"description": "Reverse-resolve an Ethereum address to its ENS name"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
}
}
},
"schema": {
"type": "object",
"$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",
"example": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"description": "Ethereum address (0x...)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/price",
"mimeType": "application/json",
"description": "Real-time cryptocurrency prices for any coin in any fiat currency"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"ids": "bitcoin,ethereum",
"currencies": "usd,eur",
"include_24h_change": true,
"include_market_cap": 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": [
"ids"
],
"properties": {
"ids": {
"type": "string",
"example": "bitcoin,ethereum",
"description": "Comma-separated coin IDs (e.g. bitcoin,ethereum)"
},
"currencies": {
"type": "string",
"default": "usd",
"example": "usd,eur",
"description": "Comma-separated fiat currencies"
},
"include_24h_change": {
"type": "boolean",
"default": true,
"description": "Include 24h price change"
},
"include_market_cap": {
"type": "boolean",
"default": false,
"description": "Include market cap"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/crypto/trending",
"mimeType": "application/json",
"description": "Currently trending coins on CoinGecko"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
}
},
"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",
"properties": {},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "1000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/ens/resolve",
"mimeType": "application/json",
"description": "Resolve an ENS name to an Ethereum address"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"name": "vitalik.eth"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"example": "vitalik.eth",
"description": "ENS name to resolve"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "10000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/web/screenshot",
"mimeType": "application/json",
"description": "Capture a screenshot of any URL — returns base64-encoded image, supports full-page capture"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://example.com",
"fullPage": false
}
}
},
"schema": {
"type": "object",
"$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": [
"url"
],
"properties": {
"url": {
"type": "string",
"example": "https://example.com",
"description": "URL to screenshot"
},
"fullPage": {
"type": "boolean",
"default": false,
"description": "Capture full page"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "20000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "20000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/travel/hotels",
"mimeType": "application/json",
"description": "Search hotels via Google Hotels (SerpApi). Returns properties with prices, ratings, and amenities."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"q": "hotels in Paris",
"adults": "2",
"currency": "USD",
"checkInDate": "2026-04-15",
"checkOutDate": "2026-04-18"
}
}
},
"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": [
"q",
"checkInDate",
"checkOutDate"
],
"properties": {
"q": {
"type": "string",
"example": "hotels in Paris",
"description": "Search query — city name or hotel name"
},
"adults": {
"type": "string",
"default": "2",
"description": "Number of adults"
},
"sortBy": {
"type": "string",
"description": "3=Lowest price, 8=Highest rating, 13=Most reviewed"
},
"children": {
"type": "string",
"description": "Number of children"
},
"currency": {
"type": "string",
"default": "USD",
"description": "Currency code (e.g. USD, EUR)"
},
"maxPrice": {
"type": "string",
"description": "Maximum price per night"
},
"minPrice": {
"type": "string",
"description": "Minimum price per night"
},
"hotelClass": {
"type": "string",
"description": "Star rating (2-5)"
},
"checkInDate": {
"type": "string",
"example": "2026-04-15",
"description": "Check-in date (YYYY-MM-DD)"
},
"checkOutDate": {
"type": "string",
"example": "2026-04-18",
"description": "Check-out date (YYYY-MM-DD)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
"extra": {
"name": "USDm",
"version": "2"
},
"payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
"amount": "2000000000000000",
"scheme": "exact",
"network": "eip155:4326",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
"amount": "2000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://x402engine.app/api/token/metadata",
"mimeType": "application/json",
"description": "Token/asset metadata — name, symbol, decimals, chain info"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "ethereum",
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7"
}
}
},
"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": [
"chain",
"address"
],
"properties": {
"chain": {
"type": "string",
"example": "ethereum",
"description": "Chain name"
},
"address": {
"type": "string",
"example": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"description": "Token contract address"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts use the 7d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/x402engine/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
UPTIME
7D UPTIME 100%
RESPONSE TIME
AVG RESP 281ms
PRICE (captured 402, USD)
Median across 13 endpoints. Use the selector to isolate one.
SUB-SCORES (uptime + x402 compliance)
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
PILLARS OVER TIME (measured)
price percentile in AI
site signals present (of 6)
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
VOLUME (on-chain settlement, USD)
DISTINCT BUYERS
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-09-06 · last up 2026-09-29
- 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
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 308ms
● OK 404ms
● OK 280ms
● OK 276ms
● OK 374ms
● OK 371ms
● OK 238ms
● OK 336ms
● OK 342ms
● OK 384ms
● SLOW 468ms
● OK 334ms
● OK 195ms
● SLOW 470ms
● OK 316ms
● OK 195ms
● OK 253ms
● OK 247ms
EMBED THIS BADGE
// HTML
<a href="https://x402-list.com/services/x402engine?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/x402engine.svg" alt="x402engine listed on x402-list" height="28"> </a>
// Markdown
[](https://x402-list.com/services/x402engine?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/x402engine?utm_source=badge&utm_medium=referral&utm_campaign=embed"> <img src="https://x402-list.com/badge/x402engine.svg?data=uptime" alt="x402engine uptime on x402-list" height="28"> </a>