API Marketplace on Solana

Ship your API. Get paid per call.

List your API, set your price. Every call earns you USDC — from developers and AI agents worldwide. No subscriptions. No invoicing. One gateway.

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For sellers

Go live in three steps

01

List your API

Point us to your base URL, pick a pricing model, set your quotas. Your API goes live on the marketplace immediately — discoverable by developers and AI agents.

POST /api/marketplace/seller/listings
{
  "name": "Weather API",
  "base_url": "https://api.weather.io/v1",
  "pricing_model": "per_call",
  "price_per_call_usdc": 0.01
}

02

Developers find your API

Developers and AI agents discover your API and start calling it through the Onchor gateway. No signup for them, no integration for you — calls flow through automatically.

03

Get paid per call

Every call is metered. Revenue hits your Solana wallet in real-time. 5% fee — 95% is yours, no invoicing, no net-30.

For developers & AI agents

One key. Every API. Pay per call.

Fund your account, call any API. Balance debited per call — like a prepaid card for APIs. No subscriptions, no vendor lock-in. Works for scripts, apps, and autonomous AI agents.

  • Direct access — Call any per-call API instantly with your account key. No purchase step needed.
  • Automatic billing — Balance debited per call in real-time. Like a prepaid card for APIs.
  • AI-agent ready — Agents self-register, fund themselves, and consume APIs autonomously. No human in the loop.
  • One gateway — Every API on the marketplace goes through the same gateway. Consistent auth, metering, and billing.
  • Discover anything — Browse by category, search by keyword. Data, LLMs, compute, images, audio — all in one place.
Gateway documentation
# 1. Browse available APIs
GET /api/marketplace/listings?q=weather
→ [{ "slug": "weather-api", "price_per_call_usdc": 0.01 }]

# 2. Call it directly (balance debited per call)
GET /api/gateway/weather-api/forecast
X-API-Key: oat_your_token

# That's it. No purchase, no subscription.
# Works for any developer or AI agent.

Marketplace

Browse available APIs

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Features

Built for API economics

5% marketplace fee

Transparent, flat fee. No monthly costs, no minimums, no setup. You earn from call one.

Instant settlement

Solana settles in seconds. No 3-day holds, no rolling reserves. Your USDC arrives the moment the call completes.

Custodial security

Unique deposit address per payment. Private keys encrypted with AES-256-GCM. Funds swept atomically — nothing lingers.

Built for developers & AI agents

One API key, any service. AI agents self-register, fund themselves, and consume APIs without human intervention.

Webhook notifications

HMAC-signed webhooks for every event: payments confirmed, quotas hit, subscriptions created. Build reactive workflows.

Wallet connect

Connect your Solana wallet, create your merchant account. Your wallet is your identity, your payment rail, and your proof of reserves.

Usage metering

Daily and monthly quotas enforced at the gateway. Real-time tracking, automatic cutoff — no surprise overages.

Seller analytics

Revenue by listing, calls by day, top buyers, active subscribers. The data you need to grow your API business.

Multi-key management

Create multiple API keys per subscription with HTTP method scopes. Rotate and revoke without downtime.

Pricing

Simple, transparent pricing

API Marketplace

5%

per API call

  • 5% fee on every API call through the gateway
  • Per-call, monthly, or one-time pricing models
  • Gateway proxy with usage metering
  • AI agent self-registration and autonomous consumption
  • Seller analytics, webhooks, and multi-key management
  • No monthly fees, no setup costs, no minimum
List your API

Transparency

Verify everything on-chain

Every payment, every fee, every sweep — recorded on Solana. Click any transaction. Verify it yourself.

--API Calls Served
--APIs Listed
--Subscriptions
--Avg Response
--Volume (USDC)
99.9%Uptime

Proof of Reserves

Total user balances--
Total deposited--
Pending withdrawals--
View treasury wallet on Solscan

Your API is already built. Start earning.

Five minutes to list. Five percent per call. The rest is yours.

Open Dashboard