FlapJax Wallet Checker
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SearchLiveeip155:8453Exactvia cdp
Wallet-intelerc-8004SybilAgent-identityCounterparty
Calls · 30d
2↑ 56%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far.
$0.28
Verified settled volume
14 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-18 23:18Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x3393319386c77EA0E8873a9BF510F1B6668a02a8The 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",
"promo": "Powered by FLAPJAX (BSC 0x90c8889f428F9Ebb77BB8f15CAD3a50a9aC680df): 100% of this API's revenue buys FLAPJAX back. https://flapjax.surge.sh/",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3393319386c77EA0E8873a9BF510F1B6668a02a8",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"category": "wallet-intel",
"resource": {
"url": "https://flapjaxcheck.shares.zrok.io/check",
"tags": [
"wallet-intel",
"erc-8004",
"sybil",
"agent-identity",
"counterparty"
],
"mimeType": "application/json",
"description": "Wallet intel for one EVM address before you pay, reward or trust it: ERC-8004 agent-likeness score (BSC identity registry plus a crawl of ~38k registered agents), sybil first-funder cluster flag, FLAPJAX holding and basic BSC/Base facts. $0.02 USDC on Base. Category: wallet-intel.",
"serviceName": "FlapJax Wallet Checker"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
}
},
"output": {
"type": "json",
"example": {
"ms": 1800,
"chain": "bsc",
"sybil": {
"flags": [],
"cluster_flag": "none",
"cluster_size": 1,
"first_funder": "0x4e59b44847b379578588920ca78fbf26c0b4956c",
"peers_sample": [],
"first_funded_block": 46000000
},
"address": "0x8004a169fb4a3325136eb29fa0ceb6d2e539a432",
"erc8004": {
"registry": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432",
"index_size": 38000,
"nfts_owned": 0,
"crawled_matches": []
},
"flapjax": {
"token": "0x90c8889f428F9Ebb77BB8f15CAD3a50a9aC680df",
"holder": false,
"balance": 0,
"pct_supply": 0
},
"chain_facts": {
"bsc": {
"bnb": 0,
"nonce": 1,
"is_contract": true
},
"base": {
"nonce": 1,
"is_contract": true
}
},
"agent_likeness": {
"score": 5,
"signals": [
"contract / smart account on BSC"
],
"verdict": "no_agent_signals"
}
}
}
},
"schema": {
"type": "object",
"$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",
"description": "EVM wallet or contract address to investigate (0x + 40 hex)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"address",
"agent_likeness",
"sybil",
"flapjax"
],
"properties": {
"ms": {
"type": "integer"
},
"chain": {
"type": "string",
"const": "bsc"
},
"promo": {
"type": "string"
},
"sybil": {
"type": "object",
"properties": {
"flags": {
"type": "array",
"items": {
"type": "string"
}
},
"cluster_flag": {
"enum": [
"none",
"watch",
"high"
],
"type": "string"
},
"cluster_size": {
"type": "integer"
},
"first_funder": {
"type": [
"string",
"null"
]
},
"peers_sample": {
"type": "array",
"items": {
"type": "string"
}
},
"first_funded_block": {
"type": [
"integer",
"null"
]
}
}
},
"lander": {
"type": "string"
},
"address": {
"type": "string"
},
"erc8004": {
"type": "object",
"properties": {
"registry": {
"type": "string"
},
"index_size": {
"type": [
"integer",
"null"
]
},
"nfts_owned": {
"type": "integer"
},
"crawled_matches": {
"type": "array",
"items": {
"type": "object"
}
}
}
},
"flapjax": {
"type": "object",
"properties": {
"token": {
"type": "string"
},
"holder": {
"type": "boolean"
},
"balance": {
"type": "number"
},
"pct_supply": {
"type": "number"
}
}
},
"chain_facts": {
"type": "object"
},
"agent_likeness": {
"type": "object",
"properties": {
"score": {
"type": "integer",
"maximum": 100,
"minimum": 0
},
"signals": {
"type": "array",
"items": {
"type": "string"
}
},
"verdict": {
"enum": [
"likely_agent",
"possible_agent",
"no_agent_signals"
],
"type": "string"
}
}
}
}
}
}
}
}
}
}
},
"facilitator": "https://api.cdp.coinbase.com/platform/v2/x402",
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.02USDC≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0x3393…a02a8. The signed payment is good for 5 minutes.
- Paid to
- 0x3393…a02a8
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3393319386c77EA0E8873a9BF510F1B6668a02a8",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
}
},
"output": {
"type": "json",
"example": {
"ms": 1800,
"chain": "bsc",
"sybil": {
"flags": [],
"cluster_flag": "none",
"cluster_size": 1,
"first_funder": "0x4e59b44847b379578588920ca78fbf26c0b4956c",
"peers_sample": [],
"first_funded_block": 46000000
},
"address": "0x8004a169fb4a3325136eb29fa0ceb6d2e539a432",
"erc8004": {
"registry": "0x8004A169FB4a3325136EB29fA0ceB6D2e539a432",
"index_size": 38000,
"nfts_owned": 0,
"crawled_matches": []
},
"flapjax": {
"token": "0x90c8889f428F9Ebb77BB8f15CAD3a50a9aC680df",
"holder": false,
"balance": 0,
"pct_supply": 0
},
"chain_facts": {
"bsc": {
"bnb": 0,
"nonce": 1,
"is_contract": true
},
"base": {
"nonce": 1,
"is_contract": true
}
},
"agent_likeness": {
"score": 5,
"signals": [
"contract / smart account on BSC"
],
"verdict": "no_agent_signals"
}
}
}
},
"schema": {
"type": "object",
"$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",
"description": "EVM wallet or contract address to investigate (0x + 40 hex)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"address",
"agent_likeness",
"sybil",
"flapjax"
],
"properties": {
"ms": {
"type": "integer"
},
"chain": {
"type": "string",
"const": "bsc"
},
"promo": {
"type": "string"
},
"sybil": {
"type": "object",
"properties": {
"flags": {
"type": "array",
"items": {
"type": "string"
}
},
"cluster_flag": {
"enum": [
"none",
"watch",
"high"
],
"type": "string"
},
"cluster_size": {
"type": "integer"
},
"first_funder": {
"type": [
"string",
"null"
]
},
"peers_sample": {
"type": "array",
"items": {
"type": "string"
}
},
"first_funded_block": {
"type": [
"integer",
"null"
]
}
}
},
"lander": {
"type": "string"
},
"address": {
"type": "string"
},
"erc8004": {
"type": "object",
"properties": {
"registry": {
"type": "string"
},
"index_size": {
"type": [
"integer",
"null"
]
},
"nfts_owned": {
"type": "integer"
},
"crawled_matches": {
"type": "array",
"items": {
"type": "object"
}
}
}
},
"flapjax": {
"type": "object",
"properties": {
"token": {
"type": "string"
},
"holder": {
"type": "boolean"
},
"balance": {
"type": "number"
},
"pct_supply": {
"type": "number"
}
}
},
"chain_facts": {
"type": "object"
},
"agent_likeness": {
"type": "object",
"properties": {
"score": {
"type": "integer",
"maximum": 100,
"minimum": 0
},
"signals": {
"type": "array",
"items": {
"type": "string"
}
},
"verdict": {
"enum": [
"likely_agent",
"possible_agent",
"no_agent_signals"
],
"type": "string"
}
}
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-18 23:18Z
- Last indexed by Roundhouse
- 2026-10-20 07:00Z
- Last enriched (probe, favicon, geo)
- 2026-10-10 14:45Z
- 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. 7 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 FlapJax Wallet Checker 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=FlapJax%20Wallet%20Checker' 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://flapjaxcheck.shares.zrok.io/check, 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.