# Mining Operating Contribution Margin — Before and After Comparison

> Mining Operating Contribution Margin — 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 2026-10-15).

Computes and compares mining operating contribution margin rates for two scenarios (before and after), returning a bounded comparison report based on supplied revenue and contribution figures.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-bx-mining-cash-margin-rate-compare?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mining-operating-contribution-margin-before-and-after-comparison-4f6f2ae8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YVDNUqf1w22qv_HsfE5Q9

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 mining-operating-contribution-margin-before-and-after-comparison-4f6f2ae8 -d '<json body>'
```

Example prompt: Compare my mining operation's contribution margin: before, revenue was $100 and contribution was $25; after, revenue is $110 and contribution is $27.50 — give me the before-and-after margin rate report.

## When to prefer this

Use this endpoint when you need a quick, low-cost ($0.01 USDC) structured before-and-after comparison of mining operating contribution margin rates using only two inputs per scenario (revenue and contribution in USD). Prefer this over general-purpose financial calculators when you specifically need mining-domain margin comparison with bounded, preset reporting logic and no dependency on live market prices.

## Known failure modes

- Revenue value of zero or missing triggers validation error (exclusiveMinimum enforced)
- Contribution value outside allowed range (below -1,000,000,000,000 or above 1e16) returns schema validation error
- Missing required fields (revenue_usd or contribution_usd) in either before or after object causes request rejection
- Payment failure or insufficient USDC balance prevents report generation
- Malformed JSON body returns HTTP 400

## How this service works

Mining operating contribution margin — Before and after comparison: Before and after comparison for Mining operating contribution margin. Supplied mining assumptions only; formula and units disclosed. No live prices, mining or guaranteed return. Specialised preset in a shared 50-profile, 20-operation engine. 0.01 USDC includes one bounded before and after comparison report.

## Output

Returns a bounded before-and-after comparison report containing the contribution margin rate (contribution divided by revenue) for both the 'before' and 'after' scenarios, along with the computed delta or change between them, expressed as percentages and formatted for mining operational analysis. No live prices or guaranteed returns are included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "after": {
   "type": "object",
   "default": {
    "revenue_usd": 110.00000000000001,
    "contribution_usd": 27.500000000000004
   },
   "required": [
    "contribution_usd",
    "revenue_usd"
   ],
   "properties": {
    "revenue_usd": {
     "type": "number",
     "default": 100,
     "maximum": 10000000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    },
    "contribution_usd": {
     "type": "number",
     "default": 25,
     "maximum": 10000000000000000,
     "minimum": -1000000000000
    }
   },
   "additionalProperties": false
  },
  "before": {
   "type": "object",
   "default": {
    "revenue_usd": 100,
    "contribution_usd": 25
   },
   "required": [
    "contribution_usd",
    "revenue_usd"
   ],
   "properties": {
    "revenue_usd": {
     "type": "number",
     "default": 100,
     "maximum": 10000000000000000,
     "minimum": 0,
     "exclusiveMinimum": 0
    },
    "contribution_usd": {
     "type": "number",
     "default": 25,
     "maximum": 10000000000000000,
     "minimum": -1000000000000
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mining-operating-contribution-margin-before-and-after-comparison-4f6f2ae8/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)