# Walmart WFS Packaging, Polybag & Barcode Prep Checker

> Walmart WFS Packaging, Polybag & Barcode Prep Checker is a paid API for AI agents from x402-niche-briefs.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Returns Walmart Fulfillment Services (WFS) inbound packaging rules, polybag suffocation warning requirements, and GTIN/UPC barcode placement guidelines based on packaging type.

## Facts

- Endpoint: GET https://x402-niche-briefs.fly.dev/v1/walmart-wfs-prep-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/walmart-wfs-packaging-polybag-barcode-prep-checker-6efc236c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lCQugrAeMqdb0ohPL2WKS

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 walmart-wfs-packaging-polybag-barcode-prep-checker-6efc236c
```

Example prompt: What are the WFS polybag packaging rules I need to follow — specifically the mil thickness, suffocation warning requirements, and barcode placement — so my inbound shipment doesn't get rejected at the Walmart fulfillment center?

## When to prefer this

Use this endpoint when preparing products for inbound shipment to Walmart Fulfillment Services and needing quick, structured prep rules by packaging type — especially to avoid receiving rejections. Prefer this over generic packaging guides when you need WFS-specific mil thickness rules, suffocation warning thresholds, carton dimension caps, or barcode placement guidance in a machine-readable format an agent can act on.

## Known failure modes

- Invalid or missing packaging enum value returns an error or default polybag behavior
- Data may be stale if WFS updates its prep requirements after the as-of date in the response
- No network/server response if the fly.dev host is unavailable
- Payment failure (x402) if USDC is not provided correctly

## How this service works

Walmart Fulfillment Services (WFS) inbound packaging, polybag suffocation warning (>=5 in opening), and GTIN/UPC barcode prep checker. Pass ?packaging=polybag|case_pack|fragile_glass|apparel (default polybag). Returns mil thickness rules, carton weight/length caps, barcode placement rules, and top receiving rejection causes.

## Output

A structured response containing the packaging type queried, a list of polybag or container rules (e.g. mil thickness minimums, suffocation warning label requirements for openings ≥5 inches), barcode and labeling rules (GTIN/UPC placement and format), carton weight and length caps, top receiving rejection causes at WFS, and a disclaimer with an as-of date for the data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "packaging"
     ],
     "properties": {
      "packaging": {
       "enum": [
        "polybag",
        "case_pack",
        "fragile_glass",
        "apparel"
       ],
       "type": "string",
       "description": "WFS packaging type"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "as_of",
      "packaging",
      "polybag_or_container_rules",
      "barcode_and_labeling_rules",
      "top_receiving_rejection_causes",
      "disclaimer"
     ],
     "properties": {
      "as_of": {
       "type": "string"
      },
      "packaging": {
       "type": "string"
      },
      "disclaimer": {
       "type": "string"
      },
      "barcode_and_labeling_rules": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "polybag_or_container_rules": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "top_receiving_rejection_causes": {
       "type": "array",
       "items": {
        "type": "string"
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/walmart-wfs-packaging-polybag-barcode-prep-checker-6efc236c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-niche-briefs.fly.dev](https://www.zero.xyz/host/x402-niche-briefs.fly.dev/llms.txt)