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ARAKEL Federal Award Search – Machine Evidence
x402
ARAKEL Federal Award Search – Machine Evidence 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).
Searches official federal award databases (USASpending) and returns cryptographically signed machine-evidence proofs indicating whether a named entity or award was OBSERVED, NOT_OBSERVED, or INCONCLUSIVE.
Price / call$0.005
Success—
StatusUnknown
How this service works
Machine-verifiable official-source evidence with free preflight and x402 USDC payments on Base.
Output
A JSON object conforming to arakel.machine-evidence.v2 schema, containing: a top-level 'result' field (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE), the data source ID (usaspending), an array of evidence records supporting the result, an observed_count integer, and an Ed25519 cryptographic signature over the response for tamper-evident verification.
Example use cases
Vendor due diligence before contracting
“Before we sign with Apex Infrastructure Group, can you pull a signed federal award proof from USASpending showing whether they've ever received government contracts? I need OBSERVED or NOT_OBSERVED evidence I can attach to our compliance file.”
Nonprofit grant history verification
“Can you check whether 'Renewal Community Foundation' appears as a recipient in federal award records and get me a cryptographically signed result — our board needs verifiable evidence of their government funding history.”
Counterparty cleared of federal ties
“I need a NOT_OBSERVED proof from federal award databases for 'Stonegate Analytics Inc' — we need documented evidence they have no federal contracts or grants on record for our investor disclosure.”
Technical details
Endpoint
GEThttps://proof.arakelproof.space/v1/federal-award-searchWhen to prefer
Use this endpoint when you need a cryptographically signed, machine-verifiable proof of whether an entity appears in US federal award records — especially for compliance documentation, counterparty due diligence, or audit trails where a plain web search is insufficient. Prefer this over manual USASpending searches when you need a structured, signed evidence artifact rather than a human-readable page. Best suited for automated workflows requiring tamper-evident attestations at scale.
Side effects
- Entity name ambiguity may yield INCONCLUSIVE result when multiple matches exist
- NOT_OBSERVED result does not guarantee absence — only absence from indexed official sources
- USASpending upstream outage may cause service degradation or error
- Malformed query parameters return validation errors before charge
- Signature verification failure if client Ed25519 public key mismatch
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "OBSERVED|NOT_OBSERVED|INCONCLUSIVE",
"schema": "arakel.machine-evidence.v2",
"source": {
"id": "usaspending"
},
"evidence": [
{}
],
"signature": {
"alg": "Ed25519"
},
"observed_count": 1
}
}Tags
x402
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