# ARAKEL Machine Evidence Network – Batch Quick Check

> ARAKEL Machine Evidence Network – Batch Quick Check is a paid API for AI agents from proof.arakelproof.space, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-14).

Runs cryptographically signed batch quick-check evidence lookups (2–10 items per call) against official sources, returning conclusive or NOT_OBSERVED proofs for each item.

## Facts

- Endpoint: POST https://proof.arakelproof.space/v1/machine/batch-quick-check
- Price: $0.025/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-batch-quick-check-2463c60e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KAjcODx0e7ygI2nwRUvB6

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-batch-quick-check-2463c60e -d '<json body>'
```

Example prompt: Run a batch quick check on these four counterparties — Acme Corp, Brightline Ltd, Novex Holdings, and Stellar Partners — and give me cryptographically signed proof of whether each one appears or was not observed in official sources.

## When to prefer this

Choose this endpoint when you need to check 2–10 entities in a single signed call at $0.025 USDC, rather than making individual $0.005 quick checks per entity. It is ideal when you need cryptographic (Ed25519) batch attestations for compliance, audit trails, or counterparty due diligence workflows, and when NOT_OBSERVED proofs are as valuable as positive findings.

## Known failure modes

- Fewer than 2 or more than 10 items submitted — request rejected with validation error
- Malformed item objects in the array — schema validation failure
- Payment not completed via x402 — 402 Payment Required response
- Official source lookup timeout — partial or inconclusive results returned
- Unrecognized entity identifiers — NOT_OBSERVED result with low confidence

## How this service works

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

## Output

A JSON object signed with Ed25519 containing a schema identifier (arakel.batch-quick-check.v1), the number of items checked, a per-item evidence result (observed or NOT_OBSERVED), and an all_conclusive boolean flag indicating whether every item returned a definitive finding.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "items": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "maxItems": 10,
   "minItems": 2
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "schema": "arakel.batch-quick-check.v1",
  "signature": {
   "alg": "Ed25519"
  },
  "items_count": 2,
  "all_conclusive": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arakel-machine-evidence-network-batch-quick-check-2463c60e/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)