Nory x402 Payment Tools for Pydantic AI

Enable your Pydantic AI agents to make blockchain payments using the x402 HTTP payment protocol.

Features

• Multi-chain support: Solana and 7 EVM chains (Base, Polygon, Arbitrum, Optimism, Avalanche, Sei, IoTeX)
• Sub-400ms settlement: Fast payment finality for real-time agent interactions
• x402 HTTP protocol: Native support for HTTP 402 Payment Required responses
• Type-safe: Full Pydantic validation with TypedDict responses
• Async-first: Built with httpx for efficient async operations

Installation

pip install pydantic-ai-tools-nory-x402

Quick Start

from pydantic_ai import Agent
from pydantic_ai_tools_nory_x402 import nory_x402_tools

# Create an agent with all payment tools
agent = Agent('openai:gpt-4o', tools=nory_x402_tools())

# Use the agent
result = agent.run_sync("Check if the Nory payment service is healthy")
print(result.data)

Available Tools

nory_get_payment_requirements_tool

Get x402 payment requirements for accessing a paid resource.

from pydantic_ai_tools_nory_x402 import nory_get_payment_requirements_tool

tool = nory_get_payment_requirements_tool()
# Returns: PaymentRequirements with amount, currency, networks, wallet_address

nory_verify_payment_tool

Verify a signed payment transaction before settlement.

from pydantic_ai_tools_nory_x402 import nory_verify_payment_tool

tool = nory_verify_payment_tool()
# Returns: VerificationResult with valid, payer, amount

nory_settle_payment_tool

Settle a payment on-chain with ~400ms settlement time.

from pydantic_ai_tools_nory_x402 import nory_settle_payment_tool

tool = nory_settle_payment_tool()
# Returns: SettlementResult with success, transaction_id, network

nory_lookup_transaction_tool

Look up transaction status.

from pydantic_ai_tools_nory_x402 import nory_lookup_transaction_tool

tool = nory_lookup_transaction_tool()
# Returns: TransactionStatus with status, confirmations, transaction_id

nory_health_check_tool

Check Nory service health and see supported networks.

from pydantic_ai_tools_nory_x402 import nory_health_check_tool

tool = nory_health_check_tool()
# Returns: HealthStatus with status, networks

nory_x402_tools

Get all tools at once:

from pydantic_ai_tools_nory_x402 import nory_x402_tools

# All tools with optional API key
tools = nory_x402_tools(api_key="your-api-key")

Supported Networks

Authentication

For public endpoints, no API key is required. For authenticated endpoints:

tools = nory_x402_tools(api_key="your-api-key")

How It Works

1. Your agent encounters an HTTP 402 Payment Required response
2. Use nory_get_payment_requirements to learn how much to pay
3. Sign and encode the payment transaction (client-side)
4. Use nory_verify_payment to validate before submission
5. Use nory_settle_payment to execute the payment on-chain
6. Access the paid resource with the payment receipt

Links

• Nory - Payment infrastructure for AI agents
• x402 Protocol - HTTP payment protocol specification
• Pydantic AI - Agent framework for Python

License

MIT