# Pharos Atlas Well Water Review

> Pharos Atlas Well Water Review is a paid API for AI agents from billing.pharosatlas.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Returns a structured editorial reference snapshot covering private well water testing, including workflow steps, key questions, subject definitions, and provenance metadata.

## Facts

- Endpoint: GET https://billing.pharosatlas.com/api/x402/resources/wellwater-review?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pharos-atlas-well-water-review-9601cb13
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sC7pZR08XSoJgE2ZkrQu5

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability pharos-atlas-well-water-review-9601cb13
```

Example prompt: Pull the Pharos Atlas well water review reference so I can see the recommended testing workflow, key questions, and subject definitions for private well water quality assessment.

## When to prefer this

Choose this endpoint when you need a structured, citable, editorially curated reference on private well water testing with defined scope and provenance — particularly when an AI agent needs bounded reference material with explicit limitations rather than open-ended web search results. Prefer this over general web search when you need workflow steps, canonical questions, and subject definitions in a predictable machine-readable format with a stable snapshot identifier.

## Known failure modes

- Payment failure (402): x402 micropayment not completed or incorrect USDC amount — no content returned
- Resource not found (404): endpoint path incorrect or resource removed
- Stale snapshot: content reflects a specific dated release (e.g. 2026-10-19) and may not reflect more recent conditions
- Rights limitation: response includes a single-use snapshot; bulk redistribution or training use is explicitly excluded
- Schema mismatch: consumers expecting a different schema version may need to handle pharos.trade-review.v1 structure explicitly

## How this service works

Pharos Atlas provides structured editorial references for trade and blue-collar topics. Its paid x402 resources give researchers, developers, and AI agents defined reference material with stated scope, source context, and limitations. Each listing describes the specific resource being purchased.

## Output

A JSON object conforming to pharos.trade-review.v1 schema, containing: a site record (id, domain, intents, subjects, contexts), a review object (workflow steps array, questions array, optional summary, safety notes, and avoid/proof lists), the primary question answered, subject definitions keyed by topic, a snapshot identifier, source date, and a provenance block with source URL, release date, file SHA256, and rights statement.

## Request schema (JSON Schema)

```json
{
 "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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "schema",
      "product",
      "question",
      "language",
      "snapshot",
      "source_date",
      "site",
      "review",
      "subjects",
      "provenance"
     ],
     "properties": {
      "site": {
       "type": "object",
       "required": [
        "id",
        "domain"
       ],
       "properties": {
        "id": {
         "type": "string"
        },
        "name": {
         "type": "string"
        },
        "domain": {
         "type": "string"
        },
        "cluster": {
         "type": "string"
        },
        "intents": {
         "type": "array",
         "items": {
          "type": "string"
         },
         "minItems": 1
        },
        "summary": {
         "type": "object",
         "required": [],
         "properties": {
          "en": {
           "type": "string"
          }
         },
         "additionalProperties": false
        },
        "contexts": {
         "type": "array",
         "items": {
          "type": "string"
         },
         "minItems": 1
        },
        "subjects": {
         "type": "array",
         "items": {
          "type": "string"
         },
         "minItems": 1
        },
        "variables": {
         "type": "array",
         "items": {
          "type": "string"
         },
         "minItems": 1
        },
        "safetyBounded": {
         "type": "boolean"
        }
       },
       "additionalProperties": false
      },
      "review": {
       "type": "object",
       "required": [
        "questions",
        "workflow"
       ],
       "properties": {
        "home": {
         "type": "object",
         "required": [],
         "properties": {
          "lede": {
           "type": "string"
          },
          "points": {
        
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "site": {
   "id": "wellwater",
   "domain": "wellwater.lol"
  },
  "review": {
   "workflow": [
    "Collect well and maintenance records"
   ],
   "questions": [
    "Which tests and collection methods fit the local risks?"
   ]
  },
  "schema": "pharos.trade-review.v1",
  "product": "wellwater-review",
  "language": "en",
  "question": "Which tests and collection methods fit the local risks?",
  "snapshot": "pharos-wellwater-20261019-r1",
  "subjects": {
   "private-well-testing": "Private-well testing should use suitable laboratories and a testing plan based on public-health guidance, local risks, and changes in source conditions."
  },
  "provenance": {
   "kind": "Pharos editorial release; no current site inspection or work authorization",
   "rights": "Single purchased snapshot for internal reference; no bulk redistribution, sublicensing or training license conferred.",
   "source_url": "https://wellwater.lol/en",
   "source_release": "2026-10-19",
   "source_file_sha256": "41705f747704654b380bcde1d2dc976d46b007d330ccf7caf769cf3cd9e076c2",
   "source_projection_sha256": "9792730096816828b6d595e2ccacfd93e70587bf0b362f92bea8e0de891a89dd"
  },
  "source_date": "2026-10-19"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pharos-atlas-well-water-review-9601cb13/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from billing.pharosatlas.com](https://www.zero.xyz/host/billing.pharosatlas.com/llms.txt)