60
💰 Paid API
data
open-pay.jp
open-pay.jp
· open-pay.jp
Live on-chain data about JPYC (the Japanese yen stablecoin) and curated Japan Web3 directories for AI agents, paid per request in USDC on Base via standard x402 (exact scheme, facilitator: Coinbase CDP). Endpoints: JPYC supply by chain, wallet balance, recent transfers, 24-hour network activity, weekly change feeds for JPYC services and Japanese stablecoin payment providers, and sourced directories of Japan Web3 services and JPYC-accepting stores. Facts only, no advice; every directory row has an official source URL and last-verified date.
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open-pay.jp via a single DNS TXT record to add the
verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
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Trust score
60/100
grade C · 3 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
$0.00
wallet scanned · no inflow
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
0 snapshots tracked
Owner
unverified
claim this listing →
Dispute or improve this rating
C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
click to expand breakdown ▾
click to collapse breakdown ▴
C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
n/a
Agent card
n/a
Not applicable: a paid API listed by agentic.market. The host serves no A2A agent card at /.well-known/agent-card.json, so the card criteria are not scored.
partial
Live endpoint
15/25
Our probe received an HTTP 402 payment challenge from the host: live, but paid.
n/a
Protocol version
n/a
Not applicable: no A2A agent card served.
n/a
JWS signature
n/a
Not applicable: no A2A agent card served.
n/a
Uptime track record
n/a
Not applicable: our 15 probes in 30 days looked for an A2A agent card, which this host does not serve. That says nothing about the API's availability, so it is not graded.
n/a
Skill declaration
n/a
Not applicable: no A2A agent card served.
partial
Verified Identity
5/10
Provider declared: open-pay.jp (https://open-pay.jp). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass
Freshness + modern flags
4/5
seen in upstream source within 0d
n/a
Security declaration
n/a
Not applicable: no A2A agent card served.
Activity (audit trail)
last 24h · 0 invocations Public aggregate · no PII recordedNothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.
Uptime
not graded
catalogue listing · no agent card to probe
Response
—
last direct probe
Skills
0
declared
Streaming
—
SSE-capable
Endpoints
| Endpoint | Price | Currency |
|---|---|---|
https://open-pay.jp/api/paid/demo
|
— | |
https://open-pay.jp/api/paid/stores
|
— | |
https://open-pay.jp/api/paid/jpyc/services
|
— | |
https://open-pay.jp/api/paid/japan-web3-directory
|
— | |
https://open-pay.jp/api/paid/japan-web3-directory/search
|
— | |
https://open-pay.jp/api/paid/stablecoin-payments
|
— | |
https://open-pay.jp/api/paid/jpyc-shops/search
|
— |
Try it ↗
Opens the operator's playground / docs in a new tab.
Settlement wallet:
0x0f4560a777415580f0680f8b56a79b0022c6b848 on Polygon
· polygonscan ↗
Listed by facilitators
Coinbase CDP · 3
PayAI · 1
Circle Gateway
Balance $0.02
· unchanged since 2026-10-07
Arc $0.02 · snapshot 2026-10-08, 1 seller address.
Gateway nanopayments settle in batches inside Circle’s Gateway Wallet, so they never show up as transfers to the wallet above; this balance (from Circle’s public API) is the only trace.
Observed on-chain inflow
verified on-chain
Last 7d
$0.00
0 transfers · synced 2026-10-08
Last 30d
$0.00
0 transfers · synced 2026-10-08
Last 90d PRO
Unlock with Pro
90-day total + 90 days of daily history
USDC inflows on Polygon. Reproducible via eth_getLogs on USDC Transfer events to the wallet. Inflow to a wallet, not proof that every transfer was a paid call.
Daily 30-day observed-inflow history
↓ −$0.04 since 2026-09-08
2026-09-08
2026-10-08
Payment authenticity
evidence confidence
How we measure this →
insufficient_evidence_of_independent_payers
1/5
Inflow observed, but payer identities are not available to us — independence of the payers could not be assessed.
Assessed window
30d
6 active of 29 observed
Inflow assessed
$0.09
13 transactions
Payer identities
not held
2 evidence caveats
uniform_amount_cadence —
Daily settled amounts repeat identically across days, which is consistent with scheduled or scripted activity as well as with flat-rate demand.
Checks run:
daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap.
Derived from agent_revenue_daily, agents.payment_wallet.
Measured 2026-10-05.
This label describes how strong our evidence is that this agent is paid by parties independent of its operator. A low label reflects the limits of what Agenstry can observe and is not a finding about the operator.
Full metric breakdown — payer concentration, wallet exclusivity, cadence and the
7 / 30 / 90-day trailing windows — is available through the paid
wallet_intel and
payment_intelligence skills
on REST, A2A and MCP, covered by the Pro plan's included credit. API docs →
| Agent card | https://open-pay.jp/.well-known/agent-card.json |
| Provider | https://open-pay.jp |
| Docs | https://open-pay.jp |
Discovered via
agentic_market
cdp_discovery
x402_list
recrawl_hot
Health · last 15 probes
Similar agents embedding-nearest
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Markdown / HTML snippets
[](https://agenstry.com/agents/open-pay.jp) [](https://agenstry.com/agents/open-pay.jp) [](https://agenstry.com/agents/open-pay.jp) [](https://agenstry.com/agents/open-pay.jp)
Audit-grade evidence bundle
JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against
our JWKS. See the methodology.
Raw agent card JSON
{
"_source": "agentic.market",
"service": {
"id": "open-pay-jp",
"name": "open-pay.jp",
"description": "",
"domain": "open-pay.jp",
"provider": "open-pay.jp",
"providerUrl": "",
"category": "",
"networks": [
"Base",
"eip155:5042"
],
"enriched": false,
"endpoints": [
{
"url": "https://open-pay.jp/api/paid/hello",
"description": "End-to-end smoke test for x402 clients: returns a greeting plus the settlement timestamp, so an agent can prove its payment path works before spending on real data.",
"pricing": {
"amount": "0.001",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [],
"serviceName": "",
"tags": [],
"quality": {
"l30DaysTotalCalls": "7",
"l30DaysUniquePayers": "6"
}
},
{
"url": "https://open-pay.jp/api/paid/usdc/japan-web3-directory",
"description": "Japan Web3 Directory, full export: sourced records on Japan's JPYC/USDC, exchange, wallet and AI-agent services \u2014 every row carries an official source URL and last-verified date.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [],
"serviceName": "",
"tags": [],
"quality": null
},
{
"url": "https://open-pay.jp/api/paid/usdc/japan-web3-directory/search",
"description": "Filter the Japan Web3 Directory by category, token, chain or capability \u2014 the same sourced, date-stamped records as the full export, without pulling rows your agent doesn't need.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "category",
"type": "string",
"description": "",
"example": "exchange",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "chain",
"type": "string",
"description": "",
"example": "polygon",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "limit",
"type": "string",
"description": "",
"example": "20",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "token",
"type": "string",
"description": "",
"example": "jpyc",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "",
"tags": [],
"quality": null
},
{
"url": "https://open-pay.jp/api/paid/usdc/jpyc/activity",
"description": "JPYC transfer metrics computed hourly from finalized Polygon blocks: event count, unique senders and receivers, volume, median and top receivers. Covers approximately 24 hours ending at the newest finalized hourly bucket; exact block and time range are in the response. Use for current JPYC usage metrics; not for wallet balances, price, news, supply or financial advice.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "chain",
"type": "string",
"description": "",
"example": "polygon",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "window",
"type": "string",
"description": "",
"example": "24h",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "JPYC Network Activity",
"tags": [
"jpyc",
"network-activity",
"token-transfers",
"polygon",
"onchain-data"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://open-pay.jp/api/paid/usdc/jpyc/balance",
"description": "Read the current on-chain JPYC balance of any EVM address on one or all supported chains (Polygon, Kaia, Avalanche, Ethereum), with the token contract and the block number observed at request time. Use before or after a payment, for treasury checks, wallet monitoring, and payment reconciliation. The result does not prove wallet ownership and is not a transaction-finality certificate.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "address",
"type": "string",
"description": "",
"example": "0x52d4901142e2B5680027da5EB47C86CB02a3cA81",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "chain",
"type": "string",
"description": "",
"example": "polygon",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "JPYC Wallet Balance",
"tags": [
"jpyc",
"wallet-balance",
"payment-reconciliation",
"treasury",
"onchain-data"
],
"quality": null
},
{
"url": "https://open-pay.jp/api/paid/usdc/jpyc/services",
"description": "JPYC Service Monitor: weekly change feed for Japan-related JPYC and Web3 services. Each event is dated, typed (added / updated / removed / verified) and tied to an official source URL. Call with changedSince=YYYY-MM-DD set to your last run date to fetch only what changed; an empty changes list explicitly means no change, so a scheduled agent can report that without guessing. Without changedSince you get the full monitor snapshot.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "changedSince",
"type": "string",
"description": "",
"example": "2026-08-20",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "JPYC Service Monitor",
"tags": [
"jpyc",
"japan",
"web3",
"monitoring",
"change-feed"
],
"quality": null
},
{
"url": "https://open-pay.jp/api/paid/usdc/jpyc/supply",
"description": "Read the current contract-reported JPYC totalSupply on Polygon, Kaia, Avalanche or Ethereum, with the token contract address and the block number observed at request time. Use for periodic supply monitoring, cross-chain comparison, or verifying a current JPYC supply figure before citing it. Not for market price, reserve backing, circulating-supply analysis, or financial advice.",
"pricing": {
"amount": "0.002",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "chain",
"type": "string",
"description": "",
"example": "polygon",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "JPYC Supply by Chain",
"tags": [
"jpyc",
"japanese-yen",
"stablecoin",
"token-supply",
"onchain-data"
],
"quality": null
},
{
"url": "https://open-pay.jp/api/paid/usdc/jpyc/transfers",
"description": "List recent JPYC Transfer events on one supported chain from roughly the last hour of blocks, optionally filtered by address \u2014 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.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "chain",
"type": "string",
"description": "",
"example": "polygon",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "limit",
"type": "string",
"description": "",
"example": "20",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Recent JPYC Transfers",
"tags": [
"jpyc",
"token-transfers",
"wallet-activity",
"payment-reconciliation",
"transaction-monitoring"
],
"quality": null
},
{
"url": "https://open-pay.jp/api/paid/usdc/stablecoin-payments",
"description": "Japan Stablecoin Payment Monitor: weekly change feed for stablecoin payment services in Japan \u2014 new launches, pilots, partnerships, fee changes, supported assets and chains, and closures. Each event is dated, categorized and tied to an official source URL. Pass changedSince=YYYY-MM-DD (your last run date) to fetch only new events; an empty changes list explicitly means no change. Without changedSince you get the full dated history back to late 2025.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "changedSince",
"type": "string",
"description": "",
"example": "2026-08-01",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Japan Stablecoin Payment Monitor",
"tags": [
"japan",
"stablecoin",
"payments",
"monitoring",
"change-feed"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://open-pay.jp/api/paid/usdc/stores",
"description": "Where JPYC (Japan's yen-pegged stablecoin) is accepted: curated exchanges, DEXes, dApps and bridges as JSON, each with category, supported assets and an official URL.",
"pricing": {
"amount": "0.04",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [],
"serviceName": "",
"tags": [],
"quality": null
}
],
"integrationType": "",
"isNew": false,
"priceSummary": {
"minAmount": "0.001",
"maxAmount": "0.04",
"avgCostPerTransaction": "0.012",
"avgCostBasis": "exact",
"currency": "USDC"
},
"serviceName": "",
"tags": [
"jpyc",
"network-activity",
"token-transfers",
"polygon",
"onchain-data",
"wallet-balance",
"payment-reconciliation",
"treasury",
"japan",
"web3",
"monitoring",
"change-feed",
"japanese-yen",
"stablecoin",
"token-supply",
"wallet-activity",
"transaction-monitoring",
"payments"
],
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1787449672/bazaar-icons/8423b63ce98ad013.png"
}
}