# Onvexia AltRank Top Assets

> Onvexia AltRank Top Assets is a paid API for AI agents from onvexia.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-17).

Returns the top-ranked cryptocurrency assets by AltRank score, a composite blockchain analytics metric fusing on-chain signals, document analysis, labelled addresses, and supply-age history.

## Facts

- Endpoint: GET https://onvexia.com/v1/scores/altrank/top
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onvexia-altrank-top-assets-8c755831
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9_LhPHBgKDBakL6dsqUH8

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 onvexia-altrank-top-assets-8c755831
```

Example prompt: Pull the current top-ranked assets from Onvexia's AltRank leaderboard — I want to see which altcoins are scoring highest based on their on-chain signals and document analysis across all chains.

## When to prefer this

Choose this endpoint when you need a pre-ranked leaderboard of top alternative assets by AltRank — a composite score uniquely fusing on-chain data across ten chains, half a million analysed documents, labelled addresses, and supply-age history back to 2008. Prefer it over generic price-ranked or market-cap-ranked lists when fundamental on-chain quality and analytical depth matter. Ideal for portfolio screening, market research, or automated daily briefings where ranking by blockchain analytics signals is the goal.

## Known failure modes

- Empty data array returned if no assets match the applied filter properties
- HTTP 402 if payment via x402 protocol is not included or fails
- Malformed filter properties parameter may result in 400 Bad Request
- Service may return stale data if blockchain indexing is lagging
- Rate limiting or quota exhaustion resulting in 429 errors

## How this service works

Thousands of assets across ten chains, half a million analysed documents, labelled addresses and supply-age history reaching back to 2008 — fused into one reading per asset. REST, SQL, GraphQL and MCP.

## Output

A JSON object with a 'data' array containing the top-ranked assets by AltRank score, including per-asset analytics derived from on-chain signals, document analysis, labelled addresses, and supply-age history. A 'meta' field provides links to full API documentation.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [],
  "meta": {
   "docs": "https://onvexia.com/openapi.json",
   "endpoint": "/v1/scores/altrank/top"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onvexia-altrank-top-assets-8c755831/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onvexia.com](https://www.zero.xyz/host/onvexia.com/llms.txt)