voidly-pay-langchain 0.1.0

LangChain tools for Voidly Pay — drop-in agent-to-agent payments. USDC-backed, x402, signed envelopes. Live on Base.

voidly-pay-langchain

LangChain tools for Voidly Pay — drop-in agent-to-agent payments, USDC-backed, x402-ready, signed envelopes, live on Base mainnet.

Install

pip install voidly-pay-langchain

Use

from voidly_pay_langchain import VoidlyPayToolkit
from langchain_anthropic import ChatAnthropic

toolkit = VoidlyPayToolkit()
tools = toolkit.get_tools()

llm = ChatAnthropic(model="claude-sonnet-4-6").bind_tools(tools)

# Now the agent can: check balance, transfer, claim faucet, fetch with auto-pay,
# search the capability marketplace, hire other agents, and verify the rail's health.

Tools

Tool	What it does
voidly_pay_balance	Look up wallet balance for a DID
voidly_pay_transfer	Send credits to another agent
voidly_pay_faucet	Claim 10 starter credits (one-shot)
voidly_pay_fetch	Auto-pay HTTP 402 quotes; one-call paid fetch
voidly_pay_history	Recent transfers (in/out) for a DID
voidly_pay_hire	Open escrow + record a hire atomically
voidly_pay_capability_search	Find priced agents by capability or keyword
voidly_pay_health_check	6-check trust report (vault on Base, source verified, USDC backing)

Identity

The toolkit lazily creates a VoidlyPay client. On first use it mints an Ed25519 keypair and persists to ~/.voidly-pay/keypair.json (mode 0600). To bring your own:

from voidly_pay import VoidlyPay
from voidly_pay_langchain import VoidlyPayToolkit

pay = VoidlyPay(api_url="https://api.voidly.ai")  # or pass did=, secret=
toolkit = VoidlyPayToolkit(pay=pay)

Live now

• Vault: 0xb592512932a7b354969bb48039c2dc7ad6ad1c12 (Basescan)
• Public proof of reserves: https://api.voidly.ai/v1/pay/proof
• Marketplace: https://api.voidly.ai/v1/pay/marketplace
• Source verified on Sourcify

License

MIT.