# SYNTHORA Counterparty Clearance

> SYNTHORA Counterparty Clearance is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Screens a counterparty (by name and/or wallet address) against major sanctions lists and on-chain reputation data, returning a signed CLEAR/FLAGGED/BLOCKED ruling with citations.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/counterparty-clearance
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-counterparty-clearance-4d1a8de3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eSKA32G8i6oHTBMU-fShV

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 synthora-counterparty-clearance-4d1a8de3 -d '<json body>'
```

Example prompt: Before I send payment to Acme Trading Ltd (wallet 0x4a3b...c91f), run a counterparty clearance check on them — screen the name and wallet against OFAC, UN, EU, and OpenSanctions lists and tell me if they're clear, flagged, or blocked.

## When to prefer this

Use this endpoint when you need a multi-list sanctions screen (OFAC SDN + aliases, UN, EU consolidated, OpenSanctions) combined with on-chain wallet reputation in a single fused ruling before authorizing a payment, signing a contract, or onboarding a counterparty. Prefer this over single-list checks or manual lookups when you need a signed, citeable compliance artifact. For full re-verifiable attestation, use the counterparty-attestation endpoint at $0.50.

## Known failure modes

- Name and wallet both omitted — returns 400 bad request
- Wallet address malformed — validation error
- Unknown or very new entity with no list presence — returns CLEAR with low confidence
- Service unavailable — 503 or timeout
- Ambiguous name match — may return FLAGGED with multiple possible citations requiring manual review

## How this service works

SYNTHORA counterparty-clearance (screen): due diligence of a counterparty before paying or contracting. Multi-list matching (OFAC SDN + aliases, UN, OpenSanctions, EU consolidated) + on-chain reputation, fused by the SYNTHORA engine into a signed CLEAR/FLAGGED/BLOCKED ruling with citations to the exact list entry. 0.10 USDC via x402 on Base. POST {"name":"..."} and/or {"wallet":"0x.."}. Full re-verifiable attestation: counterparty-attestation (0.50).

## Output

A signed ruling of CLEAR, FLAGGED, or BLOCKED, with citations to the exact matching entry on any relevant list (OFAC SDN, UN, EU consolidated, OpenSanctions), plus an on-chain reputation assessment fused by the SYNTHORA engine. An optional full re-verifiable counterparty attestation is available for $0.50.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-counterparty-clearance-4d1a8de3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)