# Marketplace Proceeds Before-and-After Comparison

> Marketplace Proceeds Before-and-After Comparison is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Calculates and compares marketplace seller proceeds under two fee/sales scenarios side by side, showing the impact of fee or revenue changes.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-retail-marketplace-proceeds-compare?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/marketplace-proceeds-before-and-after-comparison-d387df6c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EQ646zImfQBKK0QB8r_NH

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 marketplace-proceeds-before-and-after-comparison-d387df6c -d '<json body>'
```

Example prompt: Compare my marketplace seller proceeds before and after a fee change: before the change I had a $100 gross sale, 10% platform fee, $1 fixed fee, and $5 in refunds; after the change it's a $110 gross sale, 11% platform fee, $1.10 fixed fee, and $5.50 in refunds — show me the net proceeds difference.

## When to prefer this

Choose this endpoint when you need a quick, offline before-and-after proceeds comparison for marketplace seller scenarios — particularly useful when modeling the effect of fee structure changes, promotional sales lifts, or refund rate shifts without needing live inventory or account data. Prefer this over a full marketplace API integration when the user only has retail figures in hand and wants instant scenario analysis at minimal cost ($0.01 USDC per comparison).

## Known failure modes

- Missing required fields (gross_sale, fee_percent, fixed_fee, refunds) in either before or after object returns a validation error
- fee_percent value outside 0–100 range rejected
- Negative values for refunds or fees rejected (minimum: 0)
- Values exceeding 1,000,000,000,000 rejected
- Malformed JSON body returns 400 error
- Payment of 0.01 USDC not completed blocks access (x402 payment required response)

## How this service works

Marketplace proceeds from supplied fees - Before and after comparison: Before and after comparison for Marketplace proceeds from supplied fees. Supplied retail figures only. Local calculation and scenario analysis; no live inventory, account access, platform fee lookup or order execution. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded before and after comparison deliverable.

## Output

The endpoint returns a structured before-and-after comparison of marketplace seller net proceeds, including computed net proceeds for each scenario (gross sale minus percentage fee, fixed fee, and refunds), the absolute difference between the two, and a summary highlighting the change — all calculated locally from the supplied inputs with no live data lookups.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "after": {
   "type": "object",
   "default": {
    "refunds": 5.5,
    "fixed_fee": 1.1,
    "gross_sale": 110.00000000000001,
    "fee_percent": 11
   },
   "required": [
    "gross_sale",
    "fee_percent",
    "fixed_fee",
    "refunds"
   ],
   "properties": {
    "refunds": {
     "type": "number",
     "default": 5,
     "maximum": 1000000000000,
     "minimum": 0
    },
    "fixed_fee": {
     "type": "number",
     "default": 1,
     "maximum": 1000000000000,
     "minimum": 0
    },
    "gross_sale": {
     "type": "number",
     "default": 100,
     "maximum": 1000000000000,
     "minimum": 0
    },
    "fee_percent": {
     "type": "number",
     "default": 10,
     "maximum": 100,
     "minimum": 0
    }
   },
   "additionalProperties": false
  },
  "before": {
   "type": "object",
   "default": {
    "refunds": 5,
    "fixed_fee": 1,
    "gross_sale": 100,
    "fee_percent": 10
   },
   "required": [
    "gross_sale",
    "fee_percent",
    "fixed_fee",
    "refunds"
   ],
   "properties": {
    "refunds": {
     "type": "number",
     "default": 5,
     "maximum": 1000000000000,
     "minimum": 0
    },
    "fixed_fee": {
     "type": "number",
     "default": 1,
     "maximum": 1000000000000,
     "minimum": 0
    },
    "gross_sale": {
     "type": "number",
     "default": 100,
     "maximum": 1000000000000,
     "minimum": 0
    },
    "fee_percent": {
     "type": "number",
     "default": 10,
     "maximum": 100,
     "minimum": 0
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/marketplace-proceeds-before-and-after-comparison-d387df6c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)