twin.unykorn.org
Reverse-resolve an address to its primary ENS name — Genesis402 / UnyKorn Operator Network
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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AuFqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "FN9TC2ScDFAX2zPK5KKhHSv6L9gfTva8LCUq1AjXLwY1",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://twin.unykorn.org/ens-reverse",
"tags": [
"ENS",
"name resolution",
"Ethereum",
"identity",
"reverse resolution",
"primary name",
"display name",
"Composite read",
"x402",
"JSON",
"agent-payable",
"infra",
"ai",
"agents",
"genesis402",
"unykorn"
],
"mimeType": "application/json",
"parameters": {
"address": "required: 0x-prefixed 40-hex EVM address"
},
"description": "Reverse-resolve an address to its primary ENS name — Genesis402 / UnyKorn Operator Network",
"serviceName": "Reverse-resolve an address to its primary ENS name",
"what_you_get": "Looks up the reverse record for an address and returns the primary name its owner has set, plus a FORWARD check confirming that name really resolves back to the same address. A reverse record is set by the address owner and is not authoritative on its own — anyone can claim any name in reverse. The forward-check field is the one that matters; if forward_confirmed is false, do not display the name. Read live at request time; every figure names the exact endpoint it came from, and an upstream that does not answer is reported as unavailable — never as a zero.",
"deterministic": false,
"typical_execution_ms": "400-4000"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"params": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"type": "ens-reverse",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.25,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"params"
],
"properties": {
"params": {
"type": "object",
"properties": {
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$"
}
}
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object"
}
}
}
}
},
"x402Version": 2,
"lanes_withheld": {
"reason": "pay_first_lanes_are_flat_priced",
"networks": [
"xrpl:mainnet",
"stellar:pubnet"
],
"explanation": "The XRPL and Stellar lanes settle at a flat 0.25 USD equivalent and cannot be scaled down per task. Quoting them here would ask you to pay far more than this task costs, so they are withheld. Pay on base, polygon or solana USDC instead, where the amount is this task's actual price.",
"flat_price_usd": 0.25,
"this_task_price_usd": 0.005
}
}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 0.005 USDC on Base to 0x7d9a…156DB. The signed payment is good for 5 minutes.
- Paid to
- 0x7d9a…156DB
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x7d9a…156DB
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- FN9TC2…XLwY1
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x7d9a65d06dcc435a52D5880C6310Bd6E96c156DB",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AuFqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "FN9TC2ScDFAX2zPK5KKhHSv6L9gfTva8LCUq1AjXLwY1",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"params": {
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"type": "ens-reverse",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.25,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"params"
],
"properties": {
"params": {
"type": "object",
"properties": {
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$"
}
}
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object"
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-20 20:51Z
- Last indexed by Roundhouse
- 2026-09-24 07:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 21:45Z
- 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 twin.unykorn.org 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=twin.unykorn.org' 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://twin.unykorn.org/ens-reverse, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.