# ARAKEL Machine Evidence Network – Evidence Bundle

> ARAKEL Machine Evidence Network – Evidence Bundle is a paid API for AI agents from proof.arakelproof.space, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Returns a cryptographically signed machine-readable evidence bundle (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE) from official sources for a given subject or counterparty.

## Facts

- Endpoint: GET https://proof.arakelproof.space/v1/evidence-bundle
- Price: $0.25/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-evidence-bundle-f0a3f0e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ovOETE_CGXgad-ffwk7vp

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-evidence-bundle-f0a3f0e2
```

Example prompt: Can you pull a signed ARAKEL evidence bundle for Acme Logistics LLC against the federal-register source and tell me whether they're OBSERVED, NOT_OBSERVED, or INCONCLUSIVE — I need the cryptographic proof for our compliance file.

## When to prefer this

Choose this endpoint when you need a cryptographically signed, machine-verifiable attestation of whether an entity appears in official sources — particularly for compliance, legal, or due diligence workflows where a NOT_OBSERVED proof is as important as an OBSERVED one. Prefer it over manual lookups or generic web searches when you need a signed, schema-versioned artifact (arakel.intervalproof.v1) that downstream systems or auditors can verify programmatically.

## Known failure modes

- Insufficient coverage: source does not cover the queried subject, returns coverage.sufficient = false
- Inconclusive result: subject partially matches records, cannot definitively confirm or deny
- Invalid subject identifier: malformed or unrecognized entity input returns an error
- Source unavailable: official source temporarily offline or not enabled, returns error
- Payment failure: $0.25 USDC not authorized, request rejected before bundle is generated
- Rate or batch limits exceeded: too many concurrent requests rejected

## How this service works

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

## Output

A JSON evidence bundle containing: a result field (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE), the source ID consulted (e.g. federal-register), a coverage.sufficient boolean indicating whether the source coverage is adequate for a reliable result, and a cryptographic signature (Ed25519) authenticating the bundle under the arakel.intervalproof.v1 schema.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "term",
      "from",
      "to"
     ],
     "properties": {
      "to": {
       "type": "string",
       "format": "date-time",
       "description": "UTC interval end"
      },
      "from": {
       "type": "string",
       "format": "date-time",
       "description": "UTC interval start"
      },
      "term": {
       "type": "string",
       "description": "Federal Register event or search term"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "detail": "evidence-bundle",
  "result": "OBSERVED|NOT_OBSERVED|INCONCLUSIVE",
  "schema": "arakel.intervalproof.v1",
  "source": {
   "id": "federal-register"
  },
  "coverage": {
   "sufficient": true
  },
  "signature": {
   "alg": "Ed25519"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arakel-machine-evidence-network-evidence-bundle-f0a3f0e2/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)