# ApexAPI Tax Estimate

> ApexAPI Tax Estimate is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.17514/call, status unknown (last checked 2026-10-20).

Estimates tax liability based on a user-provided financial query or scenario

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/finance/tax/estimate?utm_source=zero.xyz
- Price: $0.17514/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-tax-estimate-8502aeaa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_60lFiG_t-_7hjb1NWYbD8

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 apexapi-tax-estimate-8502aeaa -d '<json body>'
```

Example prompt: Can you estimate how much tax I'd owe on $85,000 of freelance income this year, taking into account self-employment tax?

## When to prefer this

Use this endpoint when an agent needs a quick, on-demand tax estimate without requiring a full tax-filing integration or jurisdiction-specific tax API. Best for rough estimates based on described financial scenarios like freelance income, crypto gains, or capital gains.

## Known failure modes

- Vague or ambiguous query yields generic or unhelpful estimate
- Missing income or jurisdiction details may reduce accuracy
- Overly broad query string returns partial or placeholder data
- Payment failure (402) if USDC balance is insufficient
- Service unavailability returns 5xx error

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns an estimated tax liability based on the input query, likely including an estimated tax amount or breakdown relevant to the described financial scenario.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-tax-estimate-8502aeaa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)