# Onvexia Tokenized Basis Analytics

> Onvexia Tokenized Basis Analytics is a paid API for AI agents from onvexia.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-19).

Returns a ranked list of tokenized underlying assets with fused blockchain analytics including labelled addresses, supply-age history, and document-derived signals.

## Facts

- Endpoint: GET https://onvexia.com/v1/tokenized/basis
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onvexia-tokenized-basis-analytics-8b85628a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s2IO7OB3dSxFqOaWKe_l2

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-tokenized-basis-analytics-8b85628a
```

Example prompt: Pull me the top 50 tokenized asset underlyings from Onvexia's basis endpoint — I want their labelled addresses, supply-age history, and coverage metadata all in one shot.

## When to prefer this

Choose this endpoint when you need a fused, multi-signal view of tokenized asset underlyings combining labelled addresses, supply-age history, and document-derived analytics across up to ten chains in a single REST call. Prefer it over raw chain explorers or single-chain analytics tools when you need cross-chain coverage with provenance metadata in one response.

## Known failure modes

- Empty data array returned when no underlyings fall within requested range — not an error, just no matching rows
- Null label fields in meta indicate missing label data, not a safe/clean signal
- limit parameter exceeding 200 may be rejected or capped
- Payment of 0.001 USDC required per call via x402 — missing or failed payment returns 402
- API may return partial coverage metadata if underlying chains are not fully indexed

## 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

Returns a JSON object with a 'data' array of tokenized underlying asset records (labelled addresses, supply-age history, fused analytics signals) and a 'meta' object describing coverage scope, provenance, and documentation links. An empty data array means no rows in range, not that the metric is unsupported. A null label in meta means no label is held, not that the subject is safe.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "string",
       "description": "Underlyings to return, default 40, max 200"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "description": "The result — an array or object depending on the endpoint. An empty array means no rows in range, never that the metric is unsupported."
      },
      "meta": {
       "type": "object",
       "description": "Coverage and provenance: what was measured, and what is not held. A null label means no label is held, never that the subject is safe."
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onvexia-tokenized-basis-analytics-8b85628a/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)