Add Spraay x402 partner notebook: payment-enabled AI agents with Oracle AI Database

[plagtech]

What this adds

A partner notebook and README under partners/spraay/ demonstrating how to build payment-enabled AI agents that combine Oracle AI Database with the Spraay x402 Gateway.

Why this belongs here

The existing notebooks cover agent memory, reasoning, RAG, and hybrid search — but none address how agents pay for external resources autonomously. This notebook fills that gap by showing the x402 payment protocol alongside Oracle AI Vector Search in a single agentic loop.

What the notebook covers

• Oracle AI Database as the vector store for free RAG retrieval (langchain-oracledb)
• Spraay x402 Gateway for paid AI inference (200+ models at $0.04 USDC), decentralized Bittensor inference (43+ models at $0.03 USDC), and web search (Tavily-powered at $0.02 USDC)
• Cost-aware agent behavior — agent always checks Oracle AI DB first (free), only escalates to paid tools when local context is insufficient
• Oracle hybrid search — combining vector similarity with SQL metadata filtering
• Full payment audit trail — every micropayment is an on-chain USDC transfer on Base

About Spraay

Spraay Protocol is a multi-chain batch payment protocol (15 chains) and x402 payment gateway with 88 pay-per-call endpoints across 19 categories. Spraay's batch payment tool is an official community tool in Google's Agent Development Kit (merged PR #95).

Gateway	gateway.spraay.app
Docs	docs.spraay.app
Contract	0x1646452F98E36A3c9Cfc3eDD8868221E207B5eEC on Base
Google ADK	google/adk-python-community — PR #95 (merged)

## What this adds

A partner notebook and README under partners/spraay/ demonstrating how to build payment-enabled AI agents that combine Oracle AI Database with the Spraay x402 Gateway.

Why this belongs here

The existing notebooks cover agent memory, reasoning, RAG, and hybrid search — but none address how agents pay for external resources autonomously. This notebook fills that gap by showing the x402 payment protocol alongside Oracle AI Vector Search in a single agentic loop.

What the notebook covers

• Oracle AI Database as the vector store for free RAG retrieval (langchain-oracledb)
• Spraay x402 Gateway for paid AI inference (200+ models at $0.04 USDC), decentralized Bittensor inference (43+ models at $0.03 USDC), and web search (Tavily-powered at $0.02 USDC)
• Cost-aware agent behavior — agent always checks Oracle AI DB first (free), only escalates to paid tools when local context is insufficient
• Oracle hybrid search — combining vector similarity with SQL metadata filtering
• Full payment audit trail — every micropayment is an on-chain USDC transfer on Base

About Spraay

[Spraay Protocol](https://spraay.app) is a multi-chain batch payment protocol (15 chains) and x402 payment gateway with 88 pay-per-call endpoints across 19 categories. Spraay's batch payment tool is an official community tool in [Google's Agent Development Kit](https://github.com/google/adk-python-community) (merged PR #95).

Gateway	[gateway.spraay.app](https://gateway.spraay.app)
Docs	[docs.spraay.app](https://docs.spraay.app)
Contract	[0x1646452F98E36A3c9Cfc3eDD8868221E207B5eEC](https://basescan.org/address/0x1646452F98E36A3c9Cfc3eDD8868221E207B5eEC) on Base
Google ADK	[google/adk-python-community](https://github.com/google/adk-python-community) — PR #95 (merged)

Files changed

File	Change
partners/spraay/README.md	Partner overview and links
partners/spraay/spraay_x402_payment_agents_oracle.ipynb	Full notebook (26 cells)
README.md	Updated Partners table (replaced "Coming soon" placeholder)

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• PR author: plagtech
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