DataSieve
Something you cannot do while your agent is dead: keep watching. One paid call buys 7 days of it — on-chain on Base (wallet activity, whale transfers, price crossings, new pools), a dead-man switch that fires when YOUR agent goes silent, a cron/schedule webhook, or a url-change web monitor. Every event carries a signed Ed25519 receipt proving a third party observed it then — which your own logs cannot. Webhook or pollable mailbox. No account: the wallet is the identity. 50 triggers.
TradingLiveeip155:8453Exactvia cdp
BaseMonitoringWebhooksWalletWhale-alerts
Calls · 30d
2↑ 40%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$4.81
Verified settled volume
28 settlements proven x402 by their on-chain EIP-3009 marker.
$0.100
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 2026-09-17 06:16Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xFE31fD52A89461B8d54895cfCf86187aa3C95F21The 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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.1USDC≈ $0.1 USD
on Base · exact scheme
Pay 0.1 USDC on Base to 0xFE31…95F21. The signed payment is good for 5 minutes.
- Paid to
- 0xFE31…95F21
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 100000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xFE31fD52A89461B8d54895cfCf86187aa3C95F21",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"condition": {
"type": "token-transfers",
"token": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"minAmount": "1000000",
"debounceSeconds": 3600
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"id": "wt_01jzyx8k2mabcdefghjkmn",
"tier": "standard",
"links": {
"events": "https://api.datasieve.xyz/watch/wt_01jzyx8k2mabcdefghjkmn/events",
"status": "https://api.datasieve.xyz/watch/wt_01jzyx8k2mabcdefghjkmn"
},
"state": "active",
"secret": "whsec_...returned once, keep it: it authenticates status/events reads and signs your webhooks",
"expiresAt": "2026-07-17T00:00:00.000Z",
"triggerCap": 50,
"triggersUsed": 0
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"properties": {
"renew": {
"type": "string",
"description": "INSTEAD of the other fields: pass an existing standard watch id (wt_...) to renew it for another 7 days at the same price"
},
"condition": {
"type": "object",
"oneOf": [
{
"required": [
"type",
"address"
],
"properties": {
"type": {
"const": "wallet-activity"
},
"minEth": {
"type": "string",
"description": "only native transfers >= this many ETH"
},
"address": {
"type": "string",
"description": "0x wallet address on Base to watch"
},
"direction": {
"enum": [
"in",
"out",
"both"
],
"default": "both"
}
}
},
{
"required": [
"type",
"token",
"minAmount"
],
"properties": {
"type": {
"const": "token-transfers"
},
"token": {
"type": "string",
"description": "0x ERC-20 token address on Base"
},
"minAmount": {
"type": "string",
"description": "whale threshold in human token units, e.g. \"50000\""
}
}
},
{
"required": [
"type",
"pool",
"direction",
"threshold"
],
"properties": {
"pool": {
"type": "string",
"description": "Uniswap v2 pair or v3 pool address on Base"
},
"type": {
"const": "price-cross"
},
"direction": {
"enum": [
"above",
"below"
]
},
"threshold": {
"type": "string",
"description": "price of token0 in token1 units"
}
}
},
{
"required": [
"type"
],
"properties": {
"type": {
"const": "new-pairs"
},
"minQuoteLiquidity": {
"type": "string",
"description": "min initial liquidity on the WETH/USDC side, human units"
}
}
},
{
"required": [
"type",
"intervalSeconds"
],
"properties": {
"type": {
"const": "heartbeat"
},
"label": {
"type": "string",
"description": "name echoed in alarm events, e.g. \"trader-prod\""
},
"graceSeconds": {
"type": "integer",
"description": "extra allowance before alarming (default: interval/4, min 60)"
},
"intervalSeconds": {
"type": "integer",
"maximum": 604800,
"minimum": 60,
"description": "dead-man switch: your agent must hit its pingUrl at least this often; silence past interval+grace fires the alarm"
}
}
},
{
"required": [
"type"
],
"properties": {
"at": {
"type": "string",
"description": "one-shot: fire once at this ISO 8601 time (must be future)"
},
"tz": {
"type": "string",
"description": "IANA timezone for cron, default UTC"
},
"cron": {
"type": "string",
"description": "cron expression, e.g. \"0 9 * * *\" (daily 09:00)"
},
"type": {
"const": "schedule"
},
"label": {
"type": "string"
},
"payload": {
"description": "echoed verbatim in the fired event — your wake-up context"
},
"everySeconds": {
"type": "integer",
"minimum": 60,
"description": "cron for agents: fire a webhook/mailbox event every N seconds"
}
}
},
{
"required": [
"type",
"url"
],
"properties": {
"url": {
"type": "string",
"description": "public http(s) page to monitor for content changes"
},
"type": {
"const": "url-change"
},
"label": {
"type": "string"
},
"regex": {
"type": "string",
"description": "regex scoping: hash the joined matches (applied after selector if both set)"
},
"selector": {
"type": "string",
"description": "CSS selector scoping what counts as \"the page\" (matched elements' text is hashed) — without it whole-page text is used and noisy pages false-positive"
},
"pollSeconds": {
"type": "integer",
"default": 600,
"minimum": 300,
"description": "poll interval, floor 300s"
}
}
}
],
"description": "One watch condition. type selects the kind; the other fields depend on it. ANY condition also accepts debounceSeconds (collapse a burst of matches into one delivery — set it unless you want every hit, because a watch stops at its trigger cap) and dedupeKey (never fire twice for the same logical event)."
},
"webhookUrl": {
"type": "string",
"description": "optional https endpoint to receive HMAC-signed event POSTs; omit to poll GET /watch/:id/events instead"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-17 06:16Z
- Last indexed by Roundhouse
- 2026-09-24 07:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 16:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 405
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. 30 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 DataSieve 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=DataSieve' 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://api.datasieve.xyz/watch/standard, 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.