The cheapest way to verify a user or gate an action

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Which to choose

• Choose a reusable proof when the same fact is asked again, by your next session, another service, another agent, or a buyer. The first check is paid. Every later check costs 0 credits.
• Build it yourself when one team owns both the rule and every caller, and a row in your own database settles every question you ever ask.
• Pay a per-check KYC vendor when a regulator requires you to retain the document itself. Record its pass as a proof, and no downstream service pays for that answer again.

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What one check costs

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What a proof can cover

• A real, unique person. Proof of human reads the passport or ID chip on the person’s own phone through ZKPassport. It can confirm an age threshold, a nationality outside a list of countries you set, the issuing country, and a face match against the document photo. Proofable keeps the yes or no answers, never the document.
• Ownership. Control of a wallet, a domain, a social or organization account, an NFT, a token balance, or a contract.
• Risk. A wallet risk check before funds or access move.
• Agents. Agent identity, delegation, spend caps, and permission records, checked on every plan.

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Add it in one command

npx -y @proofable/sdk setup

import { ProofableClient, defineGate } from '@proofable/sdk';

const client = new ProofableClient({ apiKey: process.env.PROOFABLE_ACCESS_KEY });
const gate = defineGate([{ verifierId: 'proof-of-human' }]);

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