# ChainWard API: Blockchain Address Risk Verdict (Pay / Hold / Unknown)

> ChainWard API: Blockchain Address Risk Verdict (Pay / Hold / Unknown) is a paid API for AI agents from api.chainward.ai, paid per call via x402, $10/call, status unknown (last checked 2026-10-10).

Returns a Pay, Hold, or Unknown verdict with a single supporting reason for a Base or BNB Chain address before an agent sends payment to it.

## Facts

- Endpoint: GET https://api.chainward.ai/api/paid/termix-wallets/file?utm_source=zero.xyz
- Price: $10/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/chainward-api-blockchain-address-risk-verdict-pay-hold-unknown-4bd7a0f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8NAgt91Ya7msdeQA_DEus

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 chainward-api-blockchain-address-risk-verdict-pay-hold-unknown-4bd7a0f5
```

Example prompt: Before you send payment to 0x4a3b...c9f2 on Base, run a ChainWard risk check on it — I need to know if it's safe to pay, should be held, or is unknown, and what the one reason is.

## When to prefer this

Use this endpoint when an AI agent is about to execute an on-chain payment to an unknown or semi-trusted address on Base or BNB Chain and needs a fast, single-verdict risk signal before proceeding. It is especially valuable when the counterparty is a seller (to detect self-funded demand) or another AI agent (to assess whether it is independently funded or circularly financed). Prefer this over generic blockchain explorers when you need a structured, actionable verdict with an explanation rather than raw transaction history.

## Known failure modes

- Address not found on Base or BNB Chain — returns Unknown verdict
- Malformed or invalid address input — request rejected without charge
- Network or API timeout — no charge on failed check
- Unsupported chain — only Base and BNB Chain are supported
- Insufficient USDC balance on Base for x402 payment — call not processed

## How this service works

Paste any Base or BNB Chain address before you pay or hire it. ChainWard tells you Pay or Hold, and why, from the wallet’s on-chain history. Free.

## Output

A CSV-formatted response containing a single verdict (Pay, Hold, or Unknown) with the primary reason behind the verdict, plus supporting evidence and any applicable limits. For seller addresses, includes an assessment of whether demand is real or self-funded. For BNB Chain agents, includes whether the agent is hired by external parties or its own circle.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "contentType": "text/csv"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/chainward-api-blockchain-address-risk-verdict-pay-hold-unknown-4bd7a0f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.chainward.ai](https://www.zero.xyz/host/api.chainward.ai/llms.txt)