# ARAKEL Machine Evidence Network – Quick Check

> ARAKEL Machine Evidence Network – Quick Check is a paid API for AI agents from proof.arakelproof.space, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Performs a fast $0.005 machine-signed evidence check against official sources (e.g. OFAC) and returns a signed OBSERVED, NOT_OBSERVED, or INCONCLUSIVE proof for a given subject.

## Facts

- Endpoint: GET https://proof.arakelproof.space/v1/machine/quick-check
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arakel-machine-evidence-network-quick-check-f167b962
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qvp9P3groWj-NAaUM_Lce

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 arakel-machine-evidence-network-quick-check-f167b962
```

Example prompt: Can you run a quick ARAKEL sanctions check on 'Meridian Trade Partners LLC' against OFAC and give me the signed machine proof showing whether they're observed or not observed?

## When to prefer this

Use this endpoint when you need a fast, cheap ($0.005), cryptographically signed machine-evidence verdict from official sources — especially when you need a legally defensible NOT_OBSERVED proof, when you are building automated AML/KYC pipelines that require auditable attestations, or when you want per-check pay-as-you-go compliance screening without subscribing to a full sanctions database. Prefer this over batch endpoints for single-subject real-time checks where latency matters.

## Known failure modes

- Subject identifier not recognized or malformed — returns INCONCLUSIVE or error
- Payment of $0.005 USDC not received — request rejected before check is run
- Queried official source temporarily unavailable — INCONCLUSIVE result returned
- Rate limiting if too many quick checks are submitted in rapid succession
- Invalid source ID provided — source not found or not enabled error

## How this service works

Machine-verifiable official-source evidence with free preflight and x402 USDC payments on Base.

## Output

A JSON object containing a result field with one of three verdicts (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE), a schema identifier (arakel.quick-check.v1), a source object identifying which official source was queried (e.g. OFAC), and a cryptographic Ed25519 signature attesting the machine-generated evidence.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "OBSERVED|NOT_OBSERVED|INCONCLUSIVE",
  "schema": "arakel.quick-check.v1",
  "source": {
   "id": "ofac"
  },
  "signature": {
   "alg": "Ed25519"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arakel-machine-evidence-network-quick-check-f167b962/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proof.arakelproof.space](https://www.zero.xyz/host/proof.arakelproof.space/llms.txt)