# Onvexia Watchlist Address Events

> Onvexia Watchlist Address Events 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).

Retrieves on-chain events associated with watchlisted blockchain addresses across multiple chains

## Facts

- Endpoint: GET https://onvexia.com/v1/watchlists/addresses/events
- 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-watchlist-address-events-37c2c60a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pfICTp47UDSEDWiABN4wO

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-watchlist-address-events-37c2c60a
```

Example prompt: Pull the latest on-chain events for all the addresses in my Onvexia watchlist — give me up to 100 results so I can see what activity has happened recently.

## When to prefer this

Use this endpoint when you need to retrieve discrete on-chain events (transactions, interactions, transfers) specifically tied to a pre-configured watchlist of addresses — rather than querying arbitrary addresses ad hoc. It is best suited for monitoring workflows where you have already curated a set of addresses of interest and want to poll for new activity. Prefer this over general blockchain explorers when you need Onvexia's labelled address intelligence and cross-chain coverage fused with event data.

## Known failure modes

- Empty data array returned if no events exist for watchlisted addresses in range — not an error
- Limit parameter exceeds 500 cap, resulting in clamped or rejected response
- No watchlist configured for the authenticated account, returning empty results
- Authentication failure if x402 payment is not properly handled
- Network timeout on large result sets approaching the 500-row limit

## 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 on-chain events associated with the user's watchlisted addresses (empty array means no events in range, not that monitoring is unsupported), plus a `meta` object with coverage and provenance information including a link to the full OpenAPI spec.

## 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": "Max 500"
      }
     }
    }
   },
   "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/watchlists/addresses/events"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onvexia-watchlist-address-events-37c2c60a/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)