# Base Wallet Counterparty Flow

> Base Wallet Counterparty Flow is a paid API for AI agents from xx402.icu, paid per call via x402, $0.01/call, status down (last checked 2026-09-16).

Analyzes onchain counterparty flows for a Base wallet address over a recent block window, returning inbound/outbound transfer counterparties, large transfers, risk flags, and a review queue for a specified ERC20 token.

## Facts

- Endpoint: GET https://xx402.icu/x402/api/base-wallet-counterparty-flow
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-wallet-counterparty-flow-ba5ae4e4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TvDESQ8i-Y-wAzRcWF-qg

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 base-wallet-counterparty-flow-ba5ae4e4
```

Example prompt: Show me the counterparty flow for wallet 0xfBDB0Ad415e95c4843FD872FAc967459572910f1 on Base, checking USDC transfers over the last 3000 blocks — give me up to 10 counterparties and flag any risk.

## When to prefer this

Use this endpoint when you need to understand who a specific Base wallet has been transacting with for a given ERC20 token over a recent block window, especially when risk-flagging, counterparty due diligence, or large transfer detection is needed. Prefer this over generic blockchain explorers when you need structured risk intelligence output including ranked counterparties and a review queue rather than raw transaction data.

## Known failure modes

- Invalid wallet address format (not a valid 0x EVM address) returns an error
- Invalid token address format returns an error
- Block window outside allowed range (100–5000) returns a validation error
- Limit outside allowed range (1–15) returns a validation error
- No transfer activity found in the specified window returns empty counterparty arrays
- Payment not fulfilled (x402 payment required) returns 402 status
- Upstream Base node unavailability may cause timeout or partial data

## How this service works

Paid x402 buyer market scout, x402 paid resource preflight, x402 seller visibility audit, Base actionable risk feed, liquidity exit risk alerts, pool launch risk feed, stable asset risk feed, contract control event feed, protocol outflow risk feed, yield pool allocation risk feed, protocol fee quality feed, token watchlist decision packet, wallet watchlist decision packet, approval risk feed, ranked DeFi review queues with incident history, onchain risk decision packet, promoted token campaign decision packet, large transfer decision packet, token candidate screening decision radar, DEX pair anomaly decision radar, wallet safety decision packet, counterparty flow, allowance, approval exposure, DEX pair routing risk, token trade safety, token liquidity, token flow, holder concentration, contract controls, batch token screening decision packets, token diligence, and BTC15 prediction-market microstructure, execution-friction, calibration-slice, recent market tape, resolved feature sample, and threshold-pressure packets for agents and risk tools.

## Output

Returns a JSON object with a summary of transfer activity, ranked inbound and outbound counterparties, a list of large transfers, a risk-flagged review queue, identified risk flags, and the onchain data sources used — all scoped to the specified wallet, token, and block window on Base.

## Response schema (JSON Schema)

```json
{
 "keys": [
  "summary",
  "counterparty_flow_decision",
  "priority_queue",
  "best_next_products",
  "concentration_breakdown",
  "counterparties",
  "top_inbound_counterparties",
  "top_outbound_counterparties",
  "large_transfers",
  "review_queue",
  "avoid_queue",
  "bucket_counts",
  "risk_flags",
  "risk",
  "source_status",
  "sources"
 ],
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-wallet-counterparty-flow-ba5ae4e4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from xx402.icu](https://www.zero.xyz/host/xx402.icu/llms.txt)