1gateway
Pay-per-call API gateway for AI agents and developers: clean English JSON, paid per call with USDC on Base via x402. No signup, no API key. Current coverage: Korean data (real estate, trade, weather, holidays) and agent utilities (doc→Markdown, URL metadata, domain lookup, FX, time zones).
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.01 USDC on Base to 0x6246…cC5a1. The signed payment is good for 5 minutes.
- Paid to
- 0x6246…cC5a1
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6246eee0355Dd7A93C888fE59e1151388A0cC5a1",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}
},
"output": {
"type": "json",
"example": {
"rpc": {
"kind": "public",
"source": "base-rpc.publicnode.com"
},
"cache": "miss",
"chain": "base",
"token": {
"name": "USD Coin",
"symbol": "USDC",
"decimals": 6,
"totalSupply": 4407912298.765211,
"totalSupplyRaw": "4407912298765211"
},
"errors": [],
"status": "complete",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chainId": 8453,
"signals": [
{
"id": "mint_function",
"block": 52413026,
"title": "Mint function present and an active owner exists",
"method": "bytecode PUSH4 selector scan (implementation)",
"evidence": {
"ownerType": "eoa",
"selectors": [
{
"category": "mint",
"selector": "0x40c10f19",
"signature": "mint(address,uint256)"
}
],
"confidence": "heuristic"
},
"severity": "high"
}
],
"summary": {
"low": 0,
"high": 2,
"info": 0,
"medium": 3
},
"contract": {
"owner": {
"type": "eoa",
"method": "owner()",
"address": "0x3ABd6f64A422225E61E435baE41db12096106df7"
},
"proxy": {
"slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3",
"type": "zeppelinos",
"admin": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44",
"beacon": null,
"implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779"
},
"codeSize": 1852,
"pausedNow": false,
"accessControl": false,
"selectorsMatched": [
{
"category": "mint",
"selector": "0x40c10f19",
"signature": "mint(address,uint256)"
}
],
"scannedBytecodeBytes": 25316
},
"asOfBlock": 52413026,
"checksRun": [
"contract_code"
],
"liquidity": {
"pools": [
{
"dex": "uniswap_v2",
"quote": "WETH",
"address": "0x88A43bbDF9D098eEC7bCEda4e2494615dfD9bB9C",
"quoteBalance": 178.29189586231618,
"tokenBalance": 445711.335354,
"depthUsdApprox": 891423
}
],
"wethUsdApprox": 2499.9,
"totalDepthUsdApprox": 204104495
},
"riskLevel": "high",
"disclaimer": "Informational risk signals computed from public Base chain state at the stated block; not financial, investment or security advice and not an audit. 'no_observ…",
"notChecked": [
{
"id": "holder_distribution",
"reason": "needs a Transfer-log indexer; only known addresses are reported in supplyHeld"
}
],
"simulation": {
"dex": "uniswap_v3",
"fee": 3000,
"pool": "0x6c561B446416E1A00E8E93E221854d6eA4171372",
"block": 52413026,
"buyOk": true,
"method": "eth_simulateV1 (state override: simulated buyer ETH balance)",
"reason": null,
"sellOk": true,
"status": "ok",
"buyTaxPct": null,
"sellTaxPct": null,
"transferOk": true,
"amountInWeth": 0.001,
"revertReason": null,
"transferTaxPct": 0
},
"supplyHeld": {
"note": "Known addresses only (owner, 0x0, 0x…dEaD, discovered pools). Not a holder distribution.",
"deadPct": 0.0005,
"zeroPct": 0,
"ownerPct": 0,
"poolsPct": 1.5089
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"examples": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"description": "Token contract on Base mainnet (0x + 40 hex; mixed case must be a valid EIP-55 checksum). EOAs, bad checksums → 400 before payment (not charged)"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"chain",
"chainId",
"address",
"asOfBlock",
"status",
"riskLevel",
"summary",
"token",
"contract",
"liquidity",
"supplyHeld",
"simulation",
"signals",
"checksRun",
"notChecked",
"errors",
"rpc",
"disclaimer",
"cache"
],
"properties": {
"rpc": {
"type": "object",
"properties": {
"kind": {
"type": "string"
},
"source": {
"type": "string"
}
}
},
"cache": {
"type": "string"
},
"chain": {
"type": "string"
},
"token": {
"type": "object",
"properties": {
"name": {
"type": [
"string",
"null"
]
},
"symbol": {
"type": [
"string",
"null"
]
},
"decimals": {
"type": [
"integer",
"null"
]
},
"totalSupply": {
"type": [
"number",
"null"
]
},
"totalSupplyRaw": {
"type": [
"string",
"null"
]
}
}
},
"errors": {
"type": "array",
"items": {}
},
"status": {
"type": "string"
},
"address": {
"type": "string"
},
"chainId": {
"type": "integer"
},
"signals": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"block": {
"type": "integer"
},
"title": {
"type": "string"
},
"method": {
"type": "string"
},
"evidence": {
"type": "object",
"properties": {
"slot": {
"type": "string"
},
"admin": {
"type": "string"
},
"owner": {
"type": [
"string",
"null"
]
},
"beacon": {
"type": "null"
},
"method": {
"type": [
"string",
"null"
]
},
"quotes": {
"type": "array",
"items": {
"type": "string"
}
},
"checked": {
"type": "array",
"items": {
"type": "string"
}
},
"decimals": {
"type": "null"
},
"selector": {
"type": [
"string",
"null"
]
},
"adminType": {
"type": "string"
},
"ownerType": {
"type": "string"
},
"proxyType": {
"type": "string"
},
"selectors": {
"type": "array",
"items": {
"type": "object",
"properties": {
"category": {
"type": "string"
},
"selector": {
"type": "string"
},
"signature": {
"type": "string"
}
}
}
},
"confidence": {
"type": "string"
},
"totalSupply": {
"type": "null"
},
"implementation": {
"type": "string"
}
}
},
"severity": {
"type": "string"
}
}
}
},
"summary": {
"type": "object",
"properties": {
"low": {
"type": "integer"
},
"high": {
"type": "integer"
},
"info": {
"type": "integer"
},
"medium": {
"type": "integer"
}
}
},
"contract": {
"type": "object",
"properties": {
"owner": {
"type": "object",
"properties": {
"type": {
"type": "string"
},
"method": {
"type": [
"string",
"null"
]
},
"address": {
"type": [
"string",
"null"
]
}
}
},
"proxy": {
"type": "object",
"properties": {
"slot": {
"type": [
"string",
"null"
]
},
"type": {
"type": "string"
},
"admin": {
"type": [
"string",
"null"
]
},
"beacon": {
"type": "null"
},
"implementation": {
"type": [
"string",
"null"
]
}
}
},
"codeSize": {
"type": "integer"
},
"pausedNow": {
"type": [
"boolean",
"null"
]
},
"accessControl": {
"type": "boolean"
},
"selectorsMatched": {
"type": "array",
"items": {
"type": "object",
"properties": {
"category": {
"type": "string"
},
"selector": {
"type": "string"
},
"signature": {
"type": "string"
}
}
}
},
"scannedBytecodeBytes": {
"type": "integer"
}
}
},
"asOfBlock": {
"type": "integer"
},
"checksRun": {
"type": "array",
"items": {
"type": "string"
}
},
"liquidity": {
"type": "object",
"properties": {
"pools": {
"type": "array",
"items": {
"type": "object",
"properties": {
"dex": {
"type": "string"
},
"fee": {
"type": "integer"
},
"quote": {
"type": "string"
},
"stable": {
"type": "boolean"
},
"address": {
"type": "string"
},
"quoteBalance": {
"type": "number"
},
"tokenBalance": {
"type": "number"
},
"depthUsdApprox": {
"type": "integer"
}
}
}
},
"wethUsdApprox": {
"type": "number"
},
"totalDepthUsdApprox": {
"type": "integer"
}
}
},
"riskLevel": {
"type": "string"
},
"disclaimer": {
"type": "string"
},
"notChecked": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"reason": {
"type": "string"
}
}
}
},
"simulation": {
"type": "object",
"properties": {
"dex": {
"type": "string"
},
"fee": {
"type": [
"integer",
"null"
]
},
"pool": {
"type": "string"
},
"block": {
"type": "integer"
},
"buyOk": {
"type": "boolean"
},
"method": {
"type": "string"
},
"reason": {
"type": [
"string",
"null"
]
},
"sellOk": {
"type": "boolean"
},
"status": {
"type": "string"
},
"buyTaxPct": {
"type": [
"integer",
"null"
]
},
"sellTaxPct": {
"type": [
"integer",
"null"
]
},
"transferOk": {
"type": "boolean"
},
"amountInWeth": {
"type": "number"
},
"revertReason": {
"type": "null"
},
"transferTaxPct": {
"type": "integer"
}
}
},
"supplyHeld": {
"type": "object",
"properties": {
"note": {
"type": "string"
},
"deadPct": {
"type": [
"number",
"null"
]
},
"zeroPct": {
"type": [
"integer",
"null"
]
},
"ownerPct": {
"type": [
"integer",
"null"
]
},
"poolsPct": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-10 07:03Z
- Last indexed by Roundhouse
- 2026-10-10 19:41Z
- Last enriched (probe, favicon, geo)
- 2026-10-10 07:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service 1gateway and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=1gateway' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://tokenrisk-1gateway.ian-jungyong-um305.workers.dev/v1/onchain/base/token-risk, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.