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Introducing zkAPI: private usage credits for any API

zkAPI lets users pay for a metered API without being known. Users deposit credits into an Ethereum vault once, then authorize limited usage with zero-knowledge proofs instead of an identity.

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What happened

zkAPI lets users pay for a metered API without being known. Users deposit credits into an Ethereum vault once, then authorize limited usage with zero-knowledge proofs instead of an identity.

Confirmed

Global impact / market context

This separates who pays from who uses an API. That separation could change how companies buy data and compute: finance teams fund a vault, while product teams spend credits without revealing a link, which may ease privacy and compliance concerns.

Analyst inference

The product is an official Ethereum Foundation blog proposal built on ETH. If adopted, demand for Ethereum blockspace and vault deposits could rise, but the article gives no prices, users, or timeline, so any market effect remains speculative.

Analyst inference

What to watch

  1. The article states the provider sees requests and the payment layer sees spend, but neither learns the link between them. Confirmed
  2. Track whether zkAPI moves from concept to a working product, since the article describes its design but does not confirm a live launch or user adoption. Proposed
  3. Watch whether API providers accept zero-knowledge proofs for metered billing, because that determines if this privacy model reaches real commercial use. Analyst inference

Affected assets

  • ETH — Ethereum

Evidence