2s
Real-time water data from USGS NWIS stream / river / groundwater gauges within a bounding box around lat/lon. Returns each site's latest reading per requested variable: streamflow (00060, ft³/s), gage height (00065, ft), water temperature (00010, °C), precipitation (00045, in), and others. Each reading: site code + name, lat/lon, variable name + description + unit, value (or null if no data / sentinel), qualifier codes (e.g., 'P' = provisional, 'A' = approved), observed timestamp. Free public-domain data from waterservices.usgs.gov.
MediaLiveeip155:8453Exactvia cdp
Public-recordsIdentifiersAi-agentsUs-gov-datax402
Calls · 30d
1↓ 14%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$15.85
Verified settled volume
Settlement count unavailable — the ledger could not be read.
$0.0060
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-09 21:16Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5The 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-SIGNATURE required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
"amount": "6000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "6000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://2s.io/api/gov/usgs-water",
"tags": [
"public-records",
"identifiers",
"ai-agents",
"us-gov-data",
"x402",
"upto-billing",
"ai-gateway",
"agent-infrastructure"
],
"iconUrl": "https://2s.io/icon-512.png",
"mimeType": "application/json",
"description": "Real-time water data from USGS NWIS stream / river / groundwater gauges within a bounding box around lat/lon. Returns each site's latest reading per requested variable: streamflow (00060, ft³/s), gage height (00065, ft), water temperature (00010, °C), precipitation (00045, in), and others. Each reading: site code + name, lat/lon, variable name + description + unit, value (or null if no data / sentinel), qualifier codes (e.g., 'P' = provisional, 'A' = approved), observed timestamp. Free public-domain data from waterservices.usgs.gov.",
"serviceName": "2s"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"lat": -90,
"lon": -180,
"limit": 25,
"radius": 0.5,
"variables": "example"
}
},
"output": {
"type": "json",
"schema": {
"type": "object",
"required": [
"ok",
"items",
"total",
"source"
],
"properties": {
"ok": {
"enum": [
true
],
"type": "boolean"
},
"meta": {
"type": "object",
"required": [
"query",
"bbox"
],
"properties": {
"bbox": {
"type": "object",
"required": [
"west",
"south",
"east",
"north"
],
"properties": {
"east": {
"type": "number"
},
"west": {
"type": "number"
},
"north": {
"type": "number"
},
"south": {
"type": "number"
}
},
"additionalProperties": false
},
"query": {
"type": "object",
"required": [
"lat",
"lon",
"radiusDegrees",
"variables",
"limit"
],
"properties": {
"lat": {
"type": "number"
},
"lon": {
"type": "number"
},
"limit": {
"type": "integer"
},
"variables": {
"type": "array",
"items": {
"type": "string"
}
},
"radiusDegrees": {
"type": "number"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"items": {
"type": "array",
"items": {
"type": "object",
"required": [
"siteCode",
"siteName",
"agencyCode",
"latitude",
"longitude",
"variableCode",
"variableName",
"variableDescription",
"unit",
"value",
"qualifiers",
"observedAt",
"noDataValue"
],
"properties": {
"unit": {
"type": "string"
},
"value": {
"type": "number",
"nullable": true
},
"latitude": {
"type": "number"
},
"siteCode": {
"type": "string"
},
"siteName": {
"type": "string"
},
"longitude": {
"type": "number"
},
"agencyCode": {
"type": "string"
},
"observedAt": {
"type": "string",
"nullable": true
},
"qualifiers": {
"type": "array",
"items": {
"type": "string"
}
},
"noDataValue": {
"type": "number",
"nullable": true
},
"variableCode": {
"type": "string"
},
"variableName": {
"type": "string"
},
"variableDescription": {
"type": "string"
}
},
"additionalProperties": false
}
},
"total": {
"type": "integer",
"nullable": true,
"description": "Total matching rows upstream; null when unknown."
},
"source": {
"type": "object",
"required": [
"provider",
"url",
"license"
],
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"example": {
"ok": true,
"meta": {
"bbox": {
"east": 1,
"west": 1,
"north": 1,
"south": 1
},
"query": {
"lat": 1,
"lon": 1,
"limit": 1,
"variables": [
"example"
],
"radiusDegrees": 1
}
},
"items": [
{
"unit": "example",
"value": 1,
"latitude": 1,
"siteCode": "example",
"siteName": "example",
"longitude": 1,
"agencyCode": "example",
"observedAt": "example",
"qualifiers": [
"example"
],
"noDataValue": 1,
"variableCode": "example",
"variableName": "example",
"variableDescription": "example"
}
],
"total": 1,
"source": {
"url": "example",
"license": "example",
"provider": "example"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"const": "GET"
},
"queryParams": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90,
"description": "Center latitude (decimal degrees)."
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180,
"description": "Center longitude (decimal degrees)."
},
"limit": {
"type": "integer",
"default": 25,
"maximum": 100,
"minimum": 1,
"description": "Max readings to return (1-100). Default 25."
},
"radius": {
"type": "number",
"default": 0.5,
"maximum": 2,
"minimum": 0.05,
"description": "Half-side of bounding box, in decimal degrees. Default 0.5 (~35 mi)."
},
"variables": {
"type": "string",
"description": "Comma-separated USGS parameter codes (5-digit). Default \"00060,00065,00010\" (streamflow, gage height, water temp)."
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"ok",
"items",
"total",
"source"
],
"properties": {
"ok": {
"enum": [
true
],
"type": "boolean"
},
"meta": {
"type": "object",
"required": [
"query",
"bbox"
],
"properties": {
"bbox": {
"type": "object",
"required": [
"west",
"south",
"east",
"north"
],
"properties": {
"east": {
"type": "number"
},
"west": {
"type": "number"
},
"north": {
"type": "number"
},
"south": {
"type": "number"
}
},
"additionalProperties": false
},
"query": {
"type": "object",
"required": [
"lat",
"lon",
"radiusDegrees",
"variables",
"limit"
],
"properties": {
"lat": {
"type": "number"
},
"lon": {
"type": "number"
},
"limit": {
"type": "integer"
},
"variables": {
"type": "array",
"items": {
"type": "string"
}
},
"radiusDegrees": {
"type": "number"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"items": {
"type": "array",
"items": {
"type": "object",
"required": [
"siteCode",
"siteName",
"agencyCode",
"latitude",
"longitude",
"variableCode",
"variableName",
"variableDescription",
"unit",
"value",
"qualifiers",
"observedAt",
"noDataValue"
],
"properties": {
"unit": {
"type": "string"
},
"value": {
"type": "number",
"nullable": true
},
"latitude": {
"type": "number"
},
"siteCode": {
"type": "string"
},
"siteName": {
"type": "string"
},
"longitude": {
"type": "number"
},
"agencyCode": {
"type": "string"
},
"observedAt": {
"type": "string",
"nullable": true
},
"qualifiers": {
"type": "array",
"items": {
"type": "string"
}
},
"noDataValue": {
"type": "number",
"nullable": true
},
"variableCode": {
"type": "string"
},
"variableName": {
"type": "string"
},
"variableDescription": {
"type": "string"
}
},
"additionalProperties": false
}
},
"total": {
"type": "integer",
"nullable": true,
"description": "Total matching rows upstream; null when unknown."
},
"source": {
"type": "object",
"required": [
"provider",
"url",
"license"
],
"properties": {
"url": {
"type": "string"
},
"license": {
"type": "string"
},
"provider": {
"type": "string"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}
}
}
}
},
"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.
0.006USDC≈ $0.006 USD
on Base · exact scheme
Pay 0.006 USDC on Base to 0x2b6D…C32C5. The signed payment is good for 1 minute.
- Paid to
- 0x2b6D…C32C5
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 6000 smallest units
6000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- TW6nta…cyWhn
- Token contract
- EPjFWd…TDt1v
- Payment window
- 1 minute
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2b6D4988Db4723E6908Db86Ab2b8dFBc51FC32C5",
"amount": "6000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "1",
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "TW6ntaGzvj63ZgPjszd4FCGmVTGfzv1MAYZbjYcyWhn",
"amount": "6000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"lat": -90,
"lon": -180,
"limit": 25,
"radius": 0.5,
"variables": "example"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"const": "GET"
},
"queryParams": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90,
"description": "Center latitude (decimal degrees)."
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180,
"description": "Center longitude (decimal degrees)."
},
"limit": {
"type": "integer",
"default": 25,
"maximum": 100,
"minimum": 1,
"description": "Max readings to return (1-100). Default 25."
},
"radius": {
"type": "number",
"default": 0.5,
"maximum": 2,
"minimum": 0.05,
"description": "Half-side of bounding box, in decimal degrees. Default 0.5 (~35 mi)."
},
"variables": {
"type": "string",
"description": "Comma-separated USGS parameter codes (5-digit). Default \"00060,00065,00010\" (streamflow, gage height, water temp)."
}
},
"additionalProperties": false
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-09 21:16Z
- Last indexed by Roundhouse
- 2026-09-26 23:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 05:15Z
- x402 version
- 2
- Max timeout
- 60s
- 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. 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 2s 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=2s' 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://2s.io/api/gov/usgs-water, 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.