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proof.arakelproof.space Federal Register Search
x402
proof.arakelproof.space Federal Register Search 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 the Federal Register by topic, entity, rule, notice, order, or publication term and returns results with signed, machine-verifiable evidence of authenticity.
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
Returns matching Federal Register documents (rules, notices, orders, or other publications) along with a signed, machine-verifiable proof certificate attesting to the authenticity and official origin of the search results. The response includes document metadata such as title, type, publication date, and relevant text excerpts, paired with a cryptographic signature that proves the evidence is official.
Example use cases
Regulatory compliance check for business
“Search the Federal Register for any rules or notices mentioning 'short-term rental' so I can verify what federal regulations might apply to my property management business, and make sure the results come with signed proof they're real.”
Legal research on agency rulemaking
“Can you find all Federal Register entries from the EPA about emissions standards for industrial facilities? I need verifiable signed evidence I can cite in a legal filing.”
Journalist verifying government notice
“Search the Federal Register for any notices about the Department of Labor's overtime pay rule and give me cryptographically signed proof of the official publications so I can reference them in my article.”
Technical details
Endpoint
GEThttps://proof.arakelproof.space/v1/federal-register-searchWhen to prefer
Choose this endpoint when you need not just Federal Register search results but also cryptographic proof of authenticity — ideal for legal, compliance, or journalistic use cases where you must demonstrate that a regulation or notice is genuinely official. Prefer this over a plain web search or a generic government document API when machine-verifiable attestation is required alongside the content.
Side effects
- No matching documents found for the given search term — returns empty results
- Overly broad queries may return too many results or be rate-limited
- Malformed or ambiguous query terms may yield irrelevant results
- Service unavailable if Federal Register upstream is down
- Payment failure (insufficient USDC) results in 402 error before search is executed
- Proof signing service failure may return results without a valid attestation
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": "federal-register"
},
"evidence": [
{}
],
"signature": {
"alg": "Ed25519"
},
"observed_count": 1
}
}Tags
x402
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