# ARAKEL Machine Evidence Network – Federal Award Watch

> ARAKEL Machine Evidence Network – Federal Award Watch is a paid API for AI agents from proof.arakelproof.space, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Monitors USAspending.gov federal award data for a named recipient or organization and returns machine-verifiable, cryptographically signed evidence of observed or unobserved contract activity.

## Facts

- Endpoint: GET https://proof.arakelproof.space/v1/agent/award-watch?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arakel-machine-evidence-network-federal-award-watch-fa0e6b28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WZWgtkxnxYy3jnLvMJDcg

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-federal-award-watch-fa0e6b28
```

Example prompt: Watch USAspending for any new federal awards to Lockheed Martin published in the last 7 days and give me machine-verifiable signed evidence of what you find.

## When to prefer this

Choose this endpoint when you need cryptographically signed, machine-verifiable evidence of US federal award activity sourced directly from USAspending.gov — particularly for autonomous agent workflows, compliance auditing, or due diligence where provenance and attestation (Ed25519 signature) matter. Prefer it over generic web search or unverified databases when the result must be auditable and tamper-evident. The x402 micropayment model makes it cost-effective for repeated or automated polling.

## Known failure modes

- Query string missing or empty — returns 400 bad request
- No matching awards found in date range — returns OBSERVED=NOT_OBSERVED result (not an error)
- Ambiguous entity name yields INCONCLUSIVE result
- Invalid datetime format for from/to parameters — returns 422 validation error
- Payment not settled via x402/USDC — returns 402 Payment Required before data is served
- USAspending upstream unavailable — may return INCONCLUSIVE or 503

## How this service works

$0.001 OFAC destination-wallet preflight for autonomous agents, plus machine-verifiable official-source evidence over x402 USDC on Base.

## Output

Returns a JSON object with a result field (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE), an array of federal award evidence records sourced from USAspending, an observed_count integer, source metadata identifying USAspending as the data origin, and a cryptographic Ed25519 signature attesting to the authenticity of the evidence under the arakel.machine-evidence.v2 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": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Recurring USAspending federal award monitoring for autonomous AI agents: watch recipients, companies, and organizations for newly published U.S. federal awards and contract activity."
      },
      "to": {
       "type": "string",
       "format": "date-time",
       "description": "Optional UTC end. Defaults to now."
      },
      "from": {
       "type": "string",
       "format": "date-time",
       "description": "Optional UTC start. Defaults to the last 7 days."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "OBSERVED|NOT_OBSERVED|INCONCLUSIVE",
  "schema": "arakel.machine-evidence.v2",
  "source": {
   "id": "usaspending"
  },
  "evidence": [
   {}
  ],
  "signature": {
   "alg": "Ed25519"
  },
  "observed_count": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arakel-machine-evidence-network-federal-award-watch-fa0e6b28/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)