Tap Water Quality

Name: Tap Water Quality
Price: 0.02 USDC
Availability: InStock

Deploy serverless functions globally in seconds. No cold starts, 330+ cities, infinite concurrency, and pay only for CPU time. Support for JavaScript, TypeScript, Python, and Rust.

OtherLiveeip155:8453Exactvia cdp

https://zini-x402.wouldzini.workers.dev/v1/lookup

WaterQualityEpaUtilities

Calls · 30d

2→ 0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 snapshots so far.

$0.04

Verified settled volume

2 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.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-09-10 23:30Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0xA3897b8E871569C1b619B0739d110a5B678EE2Fc

The 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.

0.02USDC≈ $0.02 USD

on Base · exact scheme

Pay 0.02 USDC on Base to 0xA389…EE2Fc. The signed payment is good for 5 minutes.

Paid to: 0xA389…EE2Fc
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": "0xA3897b8E871569C1b619B0739d110a5B678EE2Fc",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "address": "2150 Shattuck Ave, Berkeley, CA"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "via": "via Would Zini Drink It",
          "data": {
            "coverage": "utility"
          },
          "place": {
            "lat": 37.8708393,
            "lon": -122.272863,
            "city": "Berkeley",
            "country": "United States",
            "countryCode": "us",
            "displayName": "Berkeley, Alameda County, California, United States"
          },
          "limits": {
            "known": [
              "Utility-level EPA SDWIS/ECHO compliance flags"
            ],
            "unknown": [
              "Street-level lab panel",
              "Private wells (not in SDWIS)"
            ],
            "coverageNote": "Utility file is not a tap sample for this address."
          },
          "summary": "EPA SDWIS/ECHO shows a clean compliance file for ALAMEDA COUNTY WATER DISTRICT (CA0110001). Last sanitary survey 11/18/2025. This is utility-level coverage, not a street lab panel.",
          "utility": {
            "name": "ALAMEDA COUNTY WATER DISTRICT",
            "pwsId": "CA0110001",
            "stateCode": "CA",
            "systemType": "Community water system",
            "populationServed": 344000
          },
          "verdict": {
            "call": "hell-yes",
            "headline": "Clear EPA compliance file",
            "meetsLabel": "No health-based, current, or monitoring flags",
            "meetsStandards": "yes"
          },
          "decision": {
            "reason": "EPA SDWIS/ECHO lists no health-based, current, monitoring/reporting, or serious-violator flags for this utility.",
            "basedOn": "epa-sdwis-echo",
            "outcome": "clear"
          },
          "evidence": {
            "ccr": "https://www.epa.gov/ccr",
            "sdwis": "https://sdwis.epa.gov/ords/sfdw_pub/r/sfdw/sdwis_fed_reports_public/200",
            "echoDfr": "https://echo.epa.gov/detailed-facility-report?fid=110001189632"
          },
          "citations": [
            {
              "id": "echo-dfr",
              "url": "https://echo.epa.gov/detailed-facility-report?fid=110001189632",
              "name": "EPA ECHO detailed facility report (CA0110001)",
              "agency": "U.S. Environmental Protection Agency"
            }
          ],
          "compliance": {
            "extractDate": null,
            "trippedFlags": [],
            "seriousViolator": false,
            "currentViolation": false,
            "lastSanitarySurvey": "11/18/2025",
            "monitoringViolation": false,
            "healthBasedViolation": false
          },
          "next_actions": [
            {
              "action": "cite",
              "detail": "Link the ECHO DFR and CCR in your answer."
            },
            {
              "action": "note_limits",
              "detail": "Tell the user this is utility-file coverage, not a kitchen-tap lab result."
            }
          ]
        }
      }
    },
    "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": {
              "type": "object",
              "oneOf": [
                {
                  "required": [
                    "address"
                  ]
                },
                {
                  "required": [
                    "q"
                  ]
                },
                {
                  "required": [
                    "lat",
                    "lng"
                  ]
                },
                {
                  "required": [
                    "lat",
                    "lon"
                  ]
                }
              ],
              "properties": {
                "q": {
                  "type": "string",
                  "description": "HTTP GET alias for address."
                },
                "lat": {
                  "type": "number",
                  "description": "Latitude. Must be paired with lng (or lon)."
                },
                "lng": {
                  "type": "number",
                  "description": "Longitude. Must be paired with lat."
                },
                "lon": {
                  "type": "number",
                  "description": "HTTP alias for lng."
                },
                "address": {
                  "type": "string",
                  "description": "Street address, city, or postal code. Required unless lat and lng are both set. GET also accepts q."
                }
              },
              "description": "Provide address (GET also accepts q), or both lat and lng. lon is accepted as an alias for lng."
            },
            "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: 2026-09-10 23:30Z
Last indexed by Roundhouse: 2026-09-24 23:30Z
Last enriched (probe, favicon, geo): 2026-09-10 23:45Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 402

Report

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. 14 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service Tap Water Quality 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=Tap%20Water%20Quality'
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://zini-x402.wouldzini.workers.dev/v1/lookup, 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.