# Crypto Tax-Loss Harvester MCP

> Crypto Tax-Loss Harvester MCP is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $0.18/call, status unknown (last checked 2026-09-15).

Analyzes cryptocurrency portfolio data to identify tax-loss harvesting opportunities, helping users offset capital gains by strategically realizing losses.

## Facts

- Endpoint: POST https://api.m2mcent.com/crypto-tax-loss-harvester-mcp/api/process
- Price: $0.18/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-tax-loss-harvester-mcp-71a98b7d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h7h6yQ3gAhN0t2COb5Xg2

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 crypto-tax-loss-harvester-mcp-71a98b7d -d '<json body>'
```

Example prompt: Can you analyze my crypto portfolio data and identify which positions I should sell to harvest tax losses and offset my capital gains this year?

## When to prefer this

Choose this endpoint when you need automated identification of crypto tax-loss harvesting opportunities from portfolio data. Best suited for agents helping users with end-of-year tax planning, ongoing portfolio tax efficiency monitoring, or capital gains offset strategies in cryptocurrency holdings.

## Known failure modes

- Malformed or missing portfolio data in the 'data' field returns a validation error
- Insufficient transaction history to calculate accurate cost basis leads to incomplete results
- Empty or unparseable data string may return a 400 or processing error
- No loss positions found results in an empty harvesting opportunity set
- Ambiguous asset formats or unsupported exchanges may produce partial analysis

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

Returns an analysis of cryptocurrency holdings identifying positions with unrealized losses, recommended assets to sell for tax-loss harvesting, estimated tax savings, and guidance on offsetting capital gains. May include ranked loss candidates and projected benefit amounts.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "payload": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-tax-loss-harvester-mcp-71a98b7d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)