# Numora Tax Computation API

> Numora Tax Computation API is a paid API for AI agents from numorapoi.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-17).

Computes income tax liability across progressive tax brackets given an income amount and bracket structure

## Facts

- Endpoint: POST https://numorapoi.orbonomy.xyz/api/financial/tax?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/numora-tax-computation-api-3f187b78
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LvKzHVFOMBhpjG3N8KG6Z

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 numora-tax-computation-api-3f187b78 -d '<json body>'
```

Example prompt: Calculate the income tax owed on $85,000 of income using these progressive brackets: 10% on the first $10,000, 22% on $10,001–$40,000, and 32% on anything above $40,000.

## When to prefer this

Use this endpoint when you need deterministic, serverless tax bracket computation with no external dependencies — ideal for agents doing financial planning, payroll estimation, or tax scenario modeling where you supply your own bracket definitions rather than relying on a country-specific tax API.

## Known failure modes

- Missing required 'income' field returns validation error
- Missing or malformed 'brackets' array causes 400-level error
- Negative income values may return unexpected results or error
- Overlapping or unsorted bracket ranges may produce incorrect tax calculations
- Payment failure via x402 micropayment returns 402 Payment Required before computation

## How this service works

100 pure math computation endpoints for AI agents. Statistics, financial math, linear algebra, equation solving, calculus, number theory, sequence generation, and unit conversions. Zero external dependencies. x402 micropayments on Base.

## Output

Returns a JSON object with a boolean success flag, a result object containing the computed tax liability and bracket breakdown, and a human-readable computation string describing what was calculated.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "income",
  "brackets"
 ],
 "properties": {
  "income": {
   "type": "number"
  },
  "brackets": {
   "type": "array"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "success",
  "result",
  "computation"
 ],
 "properties": {
  "result": {
   "type": "object",
   "description": "Computation result varies by endpoint"
  },
  "success": {
   "type": "boolean",
   "description": "Always true on success"
  },
  "computation": {
   "type": "string",
   "description": "Human-readable description of what was computed"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/numora-tax-computation-api-3f187b78/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from numorapoi.orbonomy.xyz](https://www.zero.xyz/host/numorapoi.orbonomy.xyz/llms.txt)