Bring Legal Payments
to LangChain
Learn how to connect LawPay to LangChain and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
What is the LawPay MCP Server?
Connect your LawPay account to any AI agent and manage legal payments through natural conversation.
What you can do
- Transaction Management — Browse payments, refunds, and charges with status tracking
- Invoice Tracking — List invoices with amounts, due dates, and payment status
- Trust Accounts — Monitor trust (IOLTA) account balances and transactions
- Payment Processing — Create charges and process payments
- Financial Reports — Access revenue summaries, payment trends, and aging reports
- Client Billing — Track client payment history and outstanding balances
How it works
1. Subscribe to this server
2. Enter your LawPay Secret Key and Merchant ID
3. Start managing payments from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Law Firms — manage client payments and trust accounts
- Legal Billing — track invoices and outstanding balances
- Finance Teams — access payment reports and reconciliation
Built-in capabilities (12)
Create a new invoice
Refund a transaction
Get account details
Get merchant profile info
Get payment statistics
Get payment method details
Get transaction details
). List merchant accounts
List payment invoices
List saved payment methods
List bank settlements
List all payment transactions
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with LawPay through native MCP adapters. Connect 12 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.
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The largest ecosystem of integrations, chains, and agents. combine LawPay MCP tools with 500+ LangChain components
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Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
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LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
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Memory and conversation persistence let agents maintain context across LawPay queries for multi-turn workflows
LawPay in LangChain
LawPay and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect LawPay to LangChain through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 3,400+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for LawPay in LangChain
The LawPay MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 12 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in LangChain only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
LawPay for LangChain
Every tool call from LangChain to the LawPay MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I manage trust account balances?
Yes. Monitor IOLTA trust account balances, view transactions per client matter, and track deposits and disbursements.
Does LawPay use Basic Auth?
Yes. LawPay uses HTTP Basic Auth with the Secret Key against api.affinipay.com/v1. The Merchant ID is required for identifying the account.
Can I track invoices and outstanding balances?
Yes. List all invoices with amounts, due dates, payment status, and client details. Monitor aging reports and outstanding balances.
How does LangChain connect to MCP servers?
Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.
Which LangChain agent types work with MCP?
All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.
Can I trace MCP tool calls in LangSmith?
Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.
MultiServerMCPClient not found
Install: pip install langchain-mcp-adapters