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The missing infrastructure between proprietary data and AI agents. Proprietary data is what makes the difference between an agent and a smart agent. OnDB is the single API to discover, query, and pay for it — any provider, automatic settlement, zero migration.

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How It Works

1

Connect

Wrap any HTTP API, REST endpoint, or database with our open-source connectors. No data migration required.
2

Discover

AI agents find your data automatically through standardized skills.md definitions.
3

Monetize

Earn revenue from every AI query. Automatic per-query payments via x402 and Stripe’s Machine Payments Protocol (MPP).
4

Join

Cross-provider data joins with automatic revenue splitting between providers.

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HTTP API

All interactions go through the OnDB REST API. SDKs are available as optional wrappers. 
# Store data
curl -X POST https://api.ondb.io/store \
  -H "Content-Type: application/json" \
  -H "X-App-Key: your-app-key" \
  -d '{
    "collection": "users",
    "data": [{ "email": "alice@example.com", "name": "Alice" }]
  }'

# Query data
curl -X POST https://api.ondb.io/query \
  -H "Content-Type: application/json" \
  -H "X-App-Key: your-app-key" \
  -d '{
    "collection": "users",
    "filters": { "email": "alice@example.com" },
    "limit": 10
  }'
Write operations that require payment return an HTTP 402 Payment Required response with a quote. Your application completes the payment and retries with the proof attached.

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Key Features

HTTP API

Simple REST endpoints for storing and querying data. SDKs available in TypeScript, Go, PHP, and Python.

HTTP 402 Payments

Native pay-per-query monetization with automatic revenue sharing via USDC payments and Stripe MPP.

Open-Source Connectors

Wrap any HTTP API, REST endpoint, or database. No data migration required.

Advanced Queries

Query builder with cross-provider JOINs, aggregations, materialized views, and blob storage.

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Get Started

Quickstart

Get up and running in 5 minutes

Authentication

Set up API keys and wallet auth

Immutability

Understand the append-only data model

API Reference

Full SDK and API reference