Overview

Apiosk is a developer-first API marketplace and payment gateway that enables APIs to be discovered, evaluated, and paid for per request using on-chain micropayments. Built for both humans and AI agents, Apiosk removes subscriptions, keys-as-identity, and manual billing from the API economy.

Apiosk is built around a simple but powerful idea: APIs should be usable instantly, discoverable by both humans and AI agents, and payable per request — without subscriptions, invoices, or account friction.\n\nThe platform consists of three tightly integrated products:\n\n• Apiosk Explore — a public API marketplace where developers and AI agents can discover APIs using structured metadata, pricing, reliability metrics, and machine-readable schemas.\n\n• Apiosk Gateway — a payment enforcement layer that sits in front of any existing API and validates x402-compatible micropayments before allowing a request to pass through.\n\n• Apiosk Dashboard — a control panel for API providers to register endpoints, define pricing, monitor usage, track revenue, and inspect reliability and performance metrics.\n\nApiosk is designed to be agent-native by default. Every API listed exposes structured metadata that allows LLMs and autonomous agents to understand pricing, availability, latency, and input/output formats without human intervention.\n\nPayments are handled via USDC micropayments on Base, enforced per request at the gateway level. This removes the need for API keys as billing identity and enables true pay-as-you-go usage at internet scale.

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Technologies Used

TypeScriptNode.jsHonoNext.jsReactTailwind CSSshadcn/uiSupabasePostgreSQLBase (Ethereum L2)USDCx402 ProtocolCoinbase CDPEdge Functions

Key Features

API marketplace with structured, agent-readable metadata

Per-request micropayments using USDC on Base

x402-compatible payment enforcement gateway

No subscriptions or prepaid credits required

Works with existing APIs without refactoring

Provider dashboard with usage, revenue, and reliability metrics

Human- and AI-agent-friendly API discovery

Stateless gateway design with cryptographic payment verification

Public and private API visibility controls

Challenges

The primary challenge was designing a system that could enforce payments per API request without introducing latency, vendor lock-in, or breaking existing APIs. Additionally, the platform needed to work equally well for human developers and autonomous AI agents, each with very different discovery and usage patterns.

Solutions

This was solved by separating concerns into three layers: discovery, enforcement, and management. The gateway uses lightweight middleware to validate x402 payment proofs before forwarding requests, while Explore focuses purely on metadata and discoverability. The Dashboard provides providers with full control and observability without coupling them to the payment flow. All components communicate through well-defined, typed contracts.