# Pharos Atlas – Concrete Placement Work Trade Review

> Pharos Atlas – Concrete Placement Work Trade 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 formwork, reinforcement interfaces, workflow checklists, and safety guidance for concrete placement work.

## Facts

- Endpoint: GET https://billing.pharosatlas.com/api/x402/resources/concreteplacementwork-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-concrete-placement-work-trade-review-ac8d15ed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XtRhwF15N2WhUEy2nouHm

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-concrete-placement-work-trade-review-ac8d15ed
```

Example prompt: Pull up the Pharos Atlas structured reference for concrete placement work — I need the workflow checklist, the key questions about formwork and reinforcement interfaces, and any safety guidance included in the snapshot.

## When to prefer this

Choose this endpoint when you need a structured, citable, versioned reference document about concrete placement work — specifically covering formwork and reinforcement interface workflows, pre-pour checklists, and safety guidance — and you need clear provenance and scope limitations. Prefer it over general web searches when auditability and a fixed snapshot with SHA-256 integrity hashes are required, or when building an AI agent that needs reliable trade knowledge without hallucination risk.

## Known failure modes

- Payment not received or invalid x402 payment header — endpoint returns 402 Payment Required
- Network or server error returns 5xx — retry with backoff
- Snapshot not found for this product ID — returns 404
- Malformed request (wrong method or extra query params) — returns 400 due to strict schema validation

## 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 the pharos.trade-review.v1 schema, including: a workflow array of ordered pre-placement steps, an array of review questions about formwork and reinforcement interfaces, subject definitions, safety guidance text, a summary, things to avoid, proof points, and full provenance metadata (source URL, release date, SHA-256 hashes). The snapshot is a fixed editorial release dated 2026-10-19.

## 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": "concreteplacementwork",
   "domain": "concreteplacementwork.cyou"
  },
  "review": {
   "workflow": [
    "Compare formwork, shoring and reinforcement documentation with the approved drawing revision before placement."
   ],
   "questions": [
    "Which identity and configuration apply to formwork and reinforcement interfaces?"
   ]
  },
  "schema": "pharos.trade-review.v1",
  "product": "concreteplacementwork-review",
  "language": "en",
  "question": "Which identity and configuration apply to formwork and reinforcement interfaces?",
  "snapshot": "pharos-concreteplacementwork-20261019-r1",
  "subjects": {
   "formwork-and-reinforcement-interfaces": "Formwork shapes fresh concrete, while reinforcement and embedded items form part of the specified completed assembly."
  },
  "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://concreteplacementwork.cyou/en",
   "source_release": "2026-10-19",
   "source_file_sha256": "41705f747704654b380bcde1d2dc976d46b007d330ccf7caf769cf3cd9e076c2",
   "source_projection_sha256": "80e91147418354eb60738f8acbbd496ce9f48e133c9199f5f5ae64d7acade042"
  },
  "source_date": "2026-10-19"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pharos-atlas-concrete-placement-work-trade-review-ac8d15ed/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)