# Friday Seller Tools – Walmart Fulfillment Performance Root Cause Analysis

> Friday Seller Tools – Walmart Fulfillment Performance Root Cause Analysis is a paid API for AI agents from friday-seller-tools-production.up.railway.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-13).

Analyzes Walmart fulfillment performance data to identify and explain root causes of performance issues for sellers.

## Facts

- Endpoint: POST https://friday-seller-tools-production.up.railway.app/v1/walmart/fulfillment-performance-root-cause
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/friday-seller-tools-walmart-fulfillment-performance-root-cause-analysis-ca64a594
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nKgI6DxBsQ-LauAK84M16

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 friday-seller-tools-walmart-fulfillment-performance-root-cause-analysis-ca64a594 -d '<json body>'
```

Example prompt: I'm a Walmart marketplace seller and my fulfillment performance score has been dropping — can you run a root cause analysis on my fulfillment data and tell me exactly what's causing the issues so I know what to fix first?

## When to prefer this

Choose this endpoint when a Walmart seller needs to understand the specific operational reasons behind declining fulfillment performance scores, cancellation rates, or on-time delivery issues. Best used after observing a Walmart performance warning or metric drop, not for real-time monitoring. Prefer this over generic analytics tools when you need marketplace-specific Walmart fulfillment terminology and actionable seller-facing insights at $0.50 per call.

## Known failure modes

- Missing or invalid Walmart seller credentials result in authentication errors
- Insufficient fulfillment data returns an empty or inconclusive analysis
- Malformed request body causes 400 bad request
- Service unavailability on Railway infrastructure returns 503
- Job may remain in 'queued' status if processing queue is backed up

## How this service works

Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.

## Output

Returns a job_id and status (e.g. 'queued') indicating the analysis has been initiated asynchronously. The completed result will contain a structured breakdown of identified root causes behind Walmart fulfillment performance deficiencies, including which metrics are impacted and what operational factors are driving the issues.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "title": "WalmartFulfillmentPerformanceRow",
    "required": [
     "report_row_number",
     "metric",
     "root_cause",
     "evaluated_events",
     "failed_events",
     "affected_units"
    ],
    "properties": {
     "sku": {
      "anyOf": [
       {
        "type": "string",
        "pattern": "^[A-Za-z0-9][A-Za-z0-9 ._/\\-]{0,119}$"
       },
       {
        "type": "null"
       }
      ],
      "title": "Sku",
      "default": null
     },
     "metric": {
      "enum": [
       "on_time_delivery",
       "valid_tracking",
       "cancellations",
       "late_shipment",
       "carrier_method_accuracy",
       "on_time_shipment",
       "ship_from_accuracy"
      ],
      "type": "string",
      "title": "Metric"
     },
     "carrier": {
      "anyOf": [
       {
        "type": "string",
        "pattern": "^[A-Za-z0-9][A-Za-z0-9 ._/\\-]{0,79}$"
       },
       {
        "type": "null"
       }
      ],
      "title": "Carrier",
      "default": null
     },
     "root_cause": {
      "enum": [
       "inventory_unavailable",
       "handling_delay",
       "late_carrier_handoff",
       "invalid_or_missing_tracking",
       "carrier_method_mismatch",
       "ship_from_mismatch",
       "seller_cancellation",
       "other_seller_accountable",
       "carrier_in_transit_delay",
       "marketplace_measurement",
       "buyer_cancellation",
       "unknown"
      ],
      "type": "string",
      "title": "Root Cause"
     },
     "failed_events": {
      "type": "integer",
      "title": "Failed Events",
      "maximum": 100000000,
      "minimum": 1
     },
     "affected_units": {
      "type": "integer",
      "title": "Affected Units",
      "maximum": 1000000000,
      "minimum": 1
     },
     "shipping_method": {
      "anyOf": [
       {
        "type": "string",
        "pattern": "^[A-Za-z0-9][A-Za-z0-9 ._/\\-]{0,79}$"
       },
       {
        "type": "null"
       }
      ],
      "title": "Shipping Method",
      "default": null
     },
     "evaluated_events": {
      "type": "integer",
      "title": "Evaluated Events",
      "maximum": 100000000,
      "minimum": 1
     },
     "report_row_number": {
      "type": "integer",
      "title": "Report Row Number",
      "maximum": 10000000,
      "minimum": 1
     },
     "ship_from_location": {
      "anyOf": [
       {
        "type": "string",
        "pattern": "^[A-
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "job_id": "example",
  "status": "queued"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/friday-seller-tools-walmart-fulfillment-performance-root-cause-analysis-ca64a594/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from friday-seller-tools-production.up.railway.app](https://www.zero.xyz/host/friday-seller-tools-production.up.railway.app/llms.txt)