# Onvexia Watchlist Address Update

> Onvexia Watchlist Address Update 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).

Updates properties of a specific blockchain address entry in a user's watchlist

## Facts

- Endpoint: PATCH https://onvexia.com/v1/watchlists/addresses/%7Bid%7D
- 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-update-a13a4799
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CNQ4TjLZBUL7g0lOUISVa

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-update-a13a4799 -d '<json body>'
```

Example prompt: Update the watchlist address with ID 'addr_8821xk' on Onvexia — change its label to 'Suspected mixer wallet' and mark it as high-risk.

## When to prefer this

Use this endpoint when you need to modify metadata, labels, tags, notes, or risk classifications on an existing blockchain address already saved in a watchlist, rather than adding a new address or querying address analytics. It is the correct choice for keeping watchlist entries current as new intelligence becomes available.

## Known failure modes

- Address ID not found — 404 with empty data array
- Malformed properties payload — 400 validation error
- Unauthorized access to another user's watchlist — 401 or 403
- Rate limit exceeded — 429 response
- Payment required but not provided — 402 response

## 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 containing the updated watchlist address record and a meta object with links to the OpenAPI documentation and the endpoint path used.

## 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/watchlists/addresses/{id}"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onvexia-watchlist-address-update-a13a4799/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)