# Coin Railz Portfolio Tracker - Real-Time Multi-Chain Portfolio Valuation

> Coin Railz Portfolio Tracker - Real-Time Multi-Chain Portfolio Valuation is a paid API for AI agents from coinrailz.com, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-15).

Performs real-time valuation of a cryptocurrency portfolio across multiple blockchains in a single API call

## Facts

- Endpoint: POST https://coinrailz.com/x402/portfolio-tracker
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coin-railz-portfolio-tracker-real-time-multi-chain-portfolio-valuation-99995c59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rqSlZ9rccsfaPQsO8wbz_

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 coin-railz-portfolio-tracker-real-time-multi-chain-portfolio-valuation-99995c59 -d '<json body>'
```

Example prompt: What's the total real-time value of my crypto portfolio across Ethereum, Base, and Solana right now? My wallet addresses are 0xABC...123 on Ethereum/Base and FGH...789 on Solana.

## When to prefer this

Use this endpoint when an AI agent or portfolio management system needs a single-call, real-time aggregate valuation of crypto assets spread across multiple chains. Prefer it over chain-specific APIs when multi-chain consolidation is needed without making separate calls per network. Ideal for B2B2C portfolio management dashboards and trading bots needing current net worth snapshots.

## Known failure modes

- Invalid or unresolvable wallet address returns error
- Unsupported blockchain network returns error
- Payment failure via x402 prevents execution
- Chain RPC downtime may cause incomplete valuation
- Malformed POST body returns 400-level error
- Timeout if multiple chains are slow to respond

## How this service works

Real-time multi-chain portfolio valuation - infrastructure for portfolio management agents (B2B2C infrastructure)

## Output

Returns a JSON object with success status, a portfolio valuation result, the service name ('portfolio-tracker'), and a timestamp. Likely includes aggregated asset values across specified chains and wallet addresses.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Query parameter for the service"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "application/json",
 "format": "json",
 "example": {
  "result": "Service executed successfully",
  "service": "portfolio-tracker",
  "success": true,
  "timestamp": "2026-02-07T01:40:19.448Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coin-railz-portfolio-tracker-real-time-multi-chain-portfolio-valuation-99995c59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from coinrailz.com](https://www.zero.xyz/host/coinrailz.com/llms.txt)