# Marketing Contribution Return - Single Calculation

> Marketing Contribution Return - Single Calculation 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 marketing contribution return for a single record given marketing spend and attributed contribution, returning the formula, units, and limitations.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-finance-marketing-return-calculate?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/marketing-contribution-return-single-calculation-62da9a9d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zjb4756VrPt6qEZKcD8VT

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 marketing-contribution-return-single-calculation-62da9a9d -d '<json body>'
```

Example prompt: Calculate the marketing contribution return for a campaign where we spent $5,000 on marketing and the attributed contribution was $8,000 — give me the formula and units too.

## When to prefer this

Use this endpoint when you need a single, on-demand calculation of marketing contribution return with the formula and units explicitly returned — ideal for agents that need an auditable, formula-backed answer rather than just a raw number. Prefer this over general-purpose calculators when you specifically need the marketing contribution return metric with documented methodology.

## Known failure modes

- marketing_spend of zero or negative triggers validation error (exclusiveMinimum: 0)
- values exceeding 1,000,000,000,000 are rejected
- missing required fields (marketing_spend or attributed_contribution) return an error
- malformed JSON body returns a 400-level error

## How this service works

Marketing contribution return - Single calculation: Calculate one supplied record with the formula and units. Metric: Marketing contribution return. Supplied figures only; returns JSON with formula, units and limitations. One of 50 calculators with 20 analysis modes. No live feed, financial advice or trade execution. 0.01 USDC includes one bounded single calculation report.

## Output

A JSON object containing the calculated marketing contribution return value along with the formula used, the measurement units, and stated limitations of the metric. Does not include live data, financial advice, or trade execution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "values": {
   "type": "object",
   "default": {
    "marketing_spend": 5000,
    "attributed_contribution": 8000
   },
   "required": [
    "attributed_contribution",
    "marketing_spend"
   ],
   "properties": {
    "marketing_spend": {
     "type": "number",
     "default": 5000,
     "maximum": 1000000000000,
     "minimum": 0,
     "description": "Amount in a consistent supplied currency and reporting period",
     "exclusiveMinimum": 0
    },
    "attributed_contribution": {
     "type": "number",
     "default": 8000,
     "maximum": 1000000000000,
     "minimum": -1000000000000,
     "description": "Amount in a consistent supplied currency and reporting period"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/marketing-contribution-return-single-calculation-62da9a9d/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)