Gateway Online

Apiosk Gateway

Pay-per-call API gateway using x402 protocol (HTTP 402 + USDC on Base). Explore APIs, check your balance, or start making requests.

Explore

Browse APIs

View all available APIs with pricing

GET /v1/apis

API Types

Browse listing types: api, dataset, service, connector, skill, product

GET /types

Health Check

Gateway status endpoint

GET /health
For AI Agents

x402 Discovery

Every payable resource with full x402 payment requirements

GET /.well-known/x402

Agent Manifest

Machine-readable plugin manifest for tool discovery

GET /.well-known/ai-plugin.json

Agent Card

A2A-style agent card with skills and payment model

GET /.well-known/agent.json

LLM Guide

Plain-text guide describing discovery, calling, and x402 payment

GET /llms.txt

OpenAPI

Machine-readable contract for the discovery and execute endpoints

GET /openapi.json

List Endpoints

JSON list of all APIs with methods and pricing

GET /v1/apis?limit=10

API Catalog

Structured API directory for agents

GET /types/api/v1

Quickstart

  • GET /v1/apis - List all available APIs
  • GET /v1/apis?search=weather - Search for APIs
  • GET /types - Browse API categories
  • GET /<api-slug>/metadata - MCP-style agent manifest
  • POST /<api-slug>/execute - Uniform agent execution contract
  • GET /<api-slug>/<path> - Call an API endpoint
  • GET /v1/balance?wallet=0x... - Check USDC balance
Documentation · Apiosk.com