# Walmart Sponsored Search Bid Calculator

> Walmart Sponsored Search Bid Calculator 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 2026-10-31).

Calculates the maximum cost-per-click (CPC) bid for Walmart Sponsored Search ads from average order value, conversion rate, and target ROAS.

## Facts

- Endpoint: GET https://x402-niche-briefs.fly.dev/v1/walmart-sponsored-search-bid?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/walmart-sponsored-search-bid-calculator-fcb70201
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dBB4cF3Oi_R05pYz52cJ2

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-sponsored-search-bid-calculator-fcb70201
```

Example prompt: What's the max CPC I should bid on Walmart Sponsored Search if my average order value is $45, my conversion rate is 3.5%, and I'm targeting a 4x ROAS?

## When to prefer this

Use this endpoint when you need a fast, deterministic, formula-driven max CPC calculation specifically for Walmart Sponsored Search, grounded in your own margin metrics (AOV, CVR, target ROAS). Prefer this over manual spreadsheet math or generic bid calculators when building automated bidding workflows for Walmart Marketplace sellers.

## Known failure modes

- Missing required query params (aov_usd, cvr_pct, target_roas) returns a validation error
- Non-numeric or malformed string values for numeric fields cause a parse error
- Zero or negative conversion rate may produce division errors or nonsensical outputs
- Zero target ROAS would produce an infinite or undefined max CPC
- Payment failure for the $0.01 USDC fee blocks the request via x402 protocol

## How this service works

Max CPC from margin, conversion rate and target ROAS.

## Output

Returns the computed revenue per click in USD, the maximum CPC bid in USD (the highest you can pay per click while hitting your target ROAS), the minimum recommended bid in USD, and a timestamp of when the calculation was made.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "aov_usd",
      "cvr_pct",
      "target_roas"
     ],
     "properties": {
      "aov_usd": {
       "type": "string",
       "description": "Avg order value"
      },
      "cvr_pct": {
       "type": "string",
       "description": "Conversion rate %"
      },
      "target_roas": {
       "type": "string",
       "description": "Target ROAS"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "input",
      "revenue_per_click_usd",
      "max_cpc_usd",
      "min_bid_usd",
      "as_of"
     ],
     "properties": {
      "as_of": {
       "type": "string"
      },
      "input": {
       "type": "object",
       "required": [
        "aov_usd",
        "cvr_pct",
        "target_roas"
       ],
       "properties": {
        "aov_usd": {
         "type": "number"
        },
        "cvr_pct": {
         "type": "number"
        },
        "target_roas": {
         "type": "number"
        }
       }
      },
      "max_cpc_usd": {
       "type": "number"
      },
      "min_bid_usd": {
       "type": "number"
      },
      "revenue_per_click_usd": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/walmart-sponsored-search-bid-calculator-fcb70201/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)