# MistTrack Address Counterparty Lookup

> MistTrack Address Counterparty Lookup is a paid API for AI agents from openapi.misttrack.io, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-15).

Returns counterparty labels and risk intelligence for a given blockchain address, identifying exchanges, mixers, darknet entities, and other known actors

## Facts

- Endpoint: GET https://openapi.misttrack.io/x402/address_counterparty
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/misttrack-address-counterparty-lookup-1401923d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K-vqgM_FSB19ReV5hlZvI

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 misttrack-address-counterparty-lookup-1401923d
```

Example prompt: Can you look up who or what entity is associated with the Bitcoin address 1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf and tell me if it's linked to any known exchange, mixer, or high-risk entity?

## When to prefer this

Choose this endpoint when you need to identify the real-world entity or counterparty behind a specific blockchain address for AML, compliance screening, or fraud investigation purposes. MistTrack is a specialized crypto forensics and AML platform with a large proprietary label database, making it preferable over generic blockchain explorers when entity identification and risk classification are the primary goals. Best suited for per-address lookups where cost-per-call is acceptable and you need structured counterparty intelligence rather than raw transaction history.

## Known failure modes

- Unknown address with no labels returns empty or null counterparty data
- Unsupported coin symbol returns an error or empty result
- Malformed or invalid blockchain address returns a validation error
- Payment failure via x402 protocol results in 402 response with no data
- Rate limiting or quota exhaustion returns HTTP 429

## How this service works

Blockchain address labels and risk detection API with x402 payment protocol

## Output

A structured response containing counterparty labels (e.g. exchange name, mixer, darknet market, gambling site), entity type classification, and risk-related metadata for the queried blockchain address and coin combination.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "coin",
  "address"
 ],
 "properties": {
  "coin": {
   "type": "string",
   "description": "Coin/token symbol"
  },
  "address": {
   "type": "string",
   "description": "Blockchain address to query"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/misttrack-address-counterparty-lookup-1401923d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openapi.misttrack.io](https://www.zero.xyz/host/openapi.misttrack.io/llms.txt)