# xx402 Base Chain Transaction Inspector

> xx402 Base Chain Transaction Inspector is a paid API for AI agents from x402.xx402.icu, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-21).

Inspects a Base chain transaction by hash, returning risk assessment, receipt details, address involvement, and recommended next actions for autonomous agents.

## Facts

- Endpoint: GET https://x402.xx402.icu/api/base-chain/tx?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/xx402-base-chain-transaction-inspector-4892925c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0o8lDqFmIJN9yw-L9GgUM

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 xx402-base-chain-transaction-inspector-4892925c
```

Example prompt: Can you inspect Base transaction 0xabc123...def456 and tell me whether it's risky, what the receipt shows, and whether my wallet 0xDEAD...BEEF was involved?

## When to prefer this

Choose this endpoint when you need a comprehensive, structured risk and involvement assessment of a specific Base chain transaction — especially when operating as an autonomous agent that needs machine-readable decision signals (priority/review/avoid queues) rather than raw RPC data. Prefer this over generic block explorers when you need risk scoring, DeFi context, and next-action recommendations bundled in a single paid API call.

## Known failure modes

- Invalid tx_hash format (must be 0x + 64 hex chars) returns validation error
- Transaction not found on Base returns empty or error response
- Optional address in wrong format (not 0x + 40 hex chars) returns schema rejection
- Unpaid or failed x402 payment returns 402 Payment Required
- Network timeouts or Base RPC unavailability may cause delayed or failed responses

## How this service works

Paid Base token, wallet, DeFi, chain-read, x402 buyer/seller discovery, and specialized Bitcoin 15-minute Up/Down prediction-market data packets for autonomous agents and risk tools.

## Output

Returns a JSON object with fields: summary (human-readable overview), decision (risk verdict), transaction (raw tx data), receipt (on-chain receipt), involvement (whether the optional address participated), next_products (recommended follow-up data products), priority_queue, risk_breakdown, review_queue, avoid_queue, bucket_counts, source_status, and sources (data provenance).

## Response schema (JSON Schema)

```json
{
 "keys": [
  "summary",
  "decision",
  "transaction",
  "receipt",
  "involvement",
  "next_products",
  "priority_queue",
  "risk_breakdown",
  "review_queue",
  "avoid_queue",
  "bucket_counts",
  "source_status",
  "sources"
 ],
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/xx402-base-chain-transaction-inspector-4892925c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.xx402.icu](https://www.zero.xyz/host/x402.xx402.icu/llms.txt)