Recent JPYC Transfers
List recent JPYC Transfer events on one supported chain from roughly the last hour of blocks, optionally filtered by address — tx hash, from, to, amount, block. Without a cursor: newest first. With a cursor: only events after that position, oldest first, so each observed event is returned once within the scanned window. Use to confirm a recent JPYC payment or monitor wallet activity. Not for history beyond the window, sanctions screening, identity, or finality proof.
OtherLiveeip155:8453Exactvia cdp
JpycToken-transfersWallet-activityPayment-reconciliationTransaction-monitoring
Calls · 30d
5↓ 12%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 28 snapshots so far.
$0.53
Verified settled volume
54 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
5
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-23 05:09Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x52d4901142e2B5680027da5EB47C86CB02a3cA81The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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": "0x52d4901142e2B5680027da5EB47C86CB02a3cA81",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://open-pay.jp/api/paid/usdc/jpyc/transfers",
"description": "Recent JPYC Transfer events in a roughly one-hour window ending at head - depth (64 blocks on Polygon/Ethereum; 2 blocks on Kaia/Avalanche), with optional address filtering. Use for delayed transfer or wallet monitoring: snapshot newest first, cursor deltas oldest first, assuming stable history before that boundary. Not for immediate payment checks, full history, sanctions screening, identity or finality proof; deeper reorgs can invalidate cursors.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"discoverable": true
}
},
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
}
],
"x402Version": 1
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x52d4…3cA81. The signed payment is good for 5 minutes.
- Paid to
- 0x52d4…3cA81
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x52d4901142e2B5680027da5EB47C86CB02a3cA81",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "polygon",
"limit": "20"
}
},
"output": {
"type": "json",
"example": {
"mode": "snapshot",
"chain": "polygon",
"items": [
{
"to": "0xB808AF91bDc577BFb3f9c91470f3286dd076e5C1",
"from": "0x13FE0A65D0aA7641B44D1AF17ECE4b41cEbB1880",
"value": "600000000000000000000000",
"txHash": "0xcae3af66168483e5905709cfc8f7cc0162f5234b9c456905df8ab4917b6f8c39",
"logIndex": 286,
"blockNumber": "92387695",
"valueFormatted": "600000"
}
],
"token": {
"symbol": "JPYC",
"decimals": 18
},
"notice": "onchain-facts-only",
"chainId": 137,
"hasMore": false,
"toBlock": "92387745",
"contract": "0xE7C3D8C9a439feDe00D2600032D5dB0Be71C3c29",
"termsUrl": "https://open-pay.jp/en/terms",
"fromBlock": "92385945",
"truncated": false,
"nextCursor": "92387695:286",
"generatedAt": "2026-08-21T04:30:45.340Z",
"schemaVersion": "2.2"
}
}
},
"schema": {
"type": "object",
"$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"
],
"properties": {
"chain": {
"enum": [
"polygon",
"kaia",
"avalanche",
"ethereum"
],
"type": "string",
"description": "Chain to scan. Supported values: polygon, kaia, avalanche, ethereum."
},
"limit": {
"type": "string",
"default": "20",
"pattern": "^(?:[1-9]|[1-9][0-9]|100)$",
"description": "Maximum number of transfer events to return, newest first (1-100). This is not a page number."
},
"cursor": {
"type": "string",
"pattern": "^[0-9]+:(?:-1|[0-9]+)$",
"description": "The nextCursor value from a previous response (\"<block>:<logIndex>\"). Returns only transfers newer than that position, oldest first (mode=delta), so repeated calls pay only for new events and return each observed event once within the scanned window, assuming stable chain history; continue with nextCursor while hasMore is true."
},
"address": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$",
"description": "Only transfers where this address is the sender or the recipient."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"schemaVersion",
"token",
"generatedAt",
"notice",
"termsUrl",
"chain",
"chainId",
"contract",
"fromBlock",
"toBlock",
"mode",
"nextCursor",
"hasMore",
"truncated",
"items"
],
"properties": {
"mode": {
"enum": [
"snapshot",
"delta"
],
"type": "string",
"description": "snapshot = no cursor was supplied; items are newest first. delta = a cursor was supplied; items are the events after that position, oldest first."
},
"chain": {
"enum": [
"polygon",
"kaia",
"avalanche",
"ethereum"
],
"type": "string"
},
"items": {
"type": "array",
"items": {
"type": "object",
"required": [
"blockNumber",
"txHash",
"logIndex",
"from",
"to",
"value",
"valueFormatted"
],
"properties": {
"to": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"from": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"value": {
"type": "string",
"pattern": "^[0-9]+$",
"description": "Atomic JPYC amount with 18 decimals."
},
"txHash": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{64}$"
},
"logIndex": {
"type": "integer",
"minimum": 0
},
"blockNumber": {
"type": "string",
"pattern": "^[0-9]+$"
},
"valueFormatted": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$"
}
},
"additionalProperties": false
}
},
"token": {
"type": "object",
"required": [
"symbol",
"decimals"
],
"properties": {
"symbol": {
"type": "string",
"const": "JPYC"
},
"decimals": {
"type": "integer",
"const": 18
}
},
"additionalProperties": false
},
"notice": {
"type": "string",
"const": "onchain-facts-only",
"description": "On-chain facts read from public RPC endpoints at request time. Informational only — not financial advice, not an offer, quote or solicitation. Full terms at termsUrl."
},
"chainId": {
"type": "integer",
"minimum": 1
},
"hasMore": {
"type": "boolean",
"description": "delta: more events exist after the returned ones — call again with nextCursor to continue. snapshot: older events in the window were omitted and are NOT retrievable via nextCursor (it starts after the newest returned event)."
},
"toBlock": {
"type": "string",
"pattern": "^[0-9]+$"
},
"contract": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{40}$"
},
"termsUrl": {
"type": "string",
"format": "uri"
},
"fromBlock": {
"type": "string",
"pattern": "^[0-9]+$"
},
"truncated": {
"type": "boolean",
"description": "true when the supplied cursor is older than the scanned block window; events between the cursor and fromBlock were not scanned."
},
"nextCursor": {
"type": "string",
"pattern": "^[0-9]+:(?:-1|[0-9]+)$",
"description": "Pass as the cursor query parameter on the next call to receive only transfers newer than this response (\"<block>:<logIndex>\"). In snapshot mode this is where monitoring starts (after the newest returned event). Never moves backwards relative to the cursor you supplied."
},
"generatedAt": {
"type": "string",
"format": "date-time"
},
"schemaVersion": {
"type": "string",
"const": "2.2"
}
},
"additionalProperties": false
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-23 05:09Z
- Last indexed by Roundhouse
- 2026-09-22 05:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 11:45Z
- 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. 28 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 Recent JPYC Transfers 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=Recent%20JPYC%20Transfers' 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://open-pay.jp/api/paid/usdc/jpyc/transfers, 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.