numberintel.dev
numberintel.dev
Signed settlement attestation: we make a REAL x402 purchase from your target endpoint (up to $0.1), grade the delivered response against its advertised schema, and return an EIP-191-signed attestation embedding the on-chain USDC receipt. Proof-of-real-delivery for directories, reputation systems and sellers.
- Category
- Service
- Networks
- Base
- Starting price
- $0.02
- Paid calls, 30 days
- 17
Paid endpoints
6 endpoints, sorted by usage. Prices are per request.
| Endpoint | Price | Network | Facilitator | Calls / 30d |
|---|---|---|---|---|
GET/v1/npa NANP area code lookup: region, state, country, timezones, current local time, toll-free/premium/geographic flags. Static authoritative dataset (450 NPAs), sub-10ms responses. | $0.02 | Base | Coinbase CDP | 5 |
POST/v1/attest Signed settlement attestation: we make a REAL x402 purchase from your target endpoint (up to $0.1), grade the delivered response against its advertised schema, and return an EIP-191-signed attestation embedding the on-chain USDC receipt. Proof-of-real-delivery for directories, reputation systems and sellers. | $0.25 | Base | Coinbase CDP | 3 |
GET/v1/number Phone number intelligence: E.164 normalization, validity and plausibility, geography, timezone and current local time, plus carrier of record, line type (mobile/landline/VoIP) and in-service possibility for US numbers. | $0.02 | Base | Coinbase CDP | 3 |
GET/v1/attest/preflight x402 conformance preflight of any endpoint: parses the 402 envelope, lints accepts[] (atomic units, payTo, network), reports the quote, Bazaar extension presence and problems. No purchase is made. | $0.02 | Base | Coinbase CDP | 2 |
POST/v1/batch Bulk phone list scrub: up to 100 US numbers per call. Per-number validity, in-service possibility, line type (mobile/landline/VoIP), SMS likelihood, carrier and timezone, plus summary counts. Clean SMS and outreach lists before sending. | $0.50 | Base | Coinbase CDP | 2 |
GET/v1/carrier US phone carrier lookup: carrier of record, line type (mobile / landline / VoIP / pager), whether the number can be in service at all, rate center and risk hints for any US or US-territory number. NANPA public numbering data refreshed weekly; block-level, so ported numbers keep their original carrier. | $0.02 | Base | Coinbase CDP | 2 |
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