4,000+ servers built on vurb.ts
Vinkius
Unlock for AI Agents
Vercel AI SDKSDK
Lago MCP Server

Bring Usage Based Billing
to Vercel AI SDK

Learn how to connect Lago to Vercel AI SDK and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

MCP Inspector GDPR Free for Subscribers
Apply CouponBatch EventsCreate Billable MetricCreate CouponCreate PlanCreate SubscriptionCreate WalletGet CustomerGet SubscriptionList InvoicesSend EventUpsert Customer
Unlock for AI Agents
ChatGPT Claude Perplexity

Compatible with every major AI agent and IDE

ClaudeClaude
ChatGPTChatGPT
CursorCursor
GeminiGemini
WindsurfWindsurf
VS CodeVS Code
JetBrainsJetBrains
VercelVercel
+ other MCP clients
Lago

What is the Lago MCP Server?

Connect Lago to your AI agent to automate your metering and billing infrastructure. Lago is the open-source alternative to Stripe Billing, designed for complex usage-based pricing models.

What you can do

  • Customer Management — Create and update customer profiles with upsert_customer and retrieve details with get_customer.
  • Subscription Lifecycle — Assign plans to customers using create_subscription and monitor them with get_subscription.
  • Billing Infrastructure — Define billing plans with create_plan and set up create_billable_metric to track consumption.
  • Usage Tracking — Send real-time usage data with send_event or batch_events to trigger accurate billing.
  • Financial Operations — Manage wallets, apply coupons, and list invoices to keep your revenue operations running smoothly.

How it works

  1. Subscribe to this server
  2. Enter your Lago API Key
  3. Start managing your billing logic from Claude, Cursor, or any MCP-compatible client

Who is this for?

  • SaaS Founders — quickly check customer subscription status or update plans without leaving the chat.
  • Growth Engineers — automate the creation of coupons and wallets for promotional campaigns.
  • Finance Teams — list invoices and verify billable metrics through natural language queries.

Built-in capabilities (12)

apply_coupon

Apply a coupon to a customer

batch_events

Send a batch of usage events

create_billable_metric

Create a billable metric

create_coupon

Create a coupon

create_plan

Create a new billing plan

create_subscription

Assign a plan to a customer (create subscription)

create_wallet

Create a wallet for prepaid credits

get_customer

Retrieve a customer by external ID

get_subscription

Retrieve a subscription by external ID

list_invoices

List all invoices

send_event

Send a usage event

upsert_customer

Requires an external_id. Create or update a customer in Lago

Why Vercel AI SDK?

The Vercel AI SDK gives every Lago tool full TypeScript type inference, IDE autocomplete, and compile-time error checking. Connect 12 tools through Vinkius and stream results progressively to React, Svelte, or Vue components. works on Edge Functions, Cloudflare Workers, and any Node.js runtime.

  • —

    TypeScript-first: every MCP tool gets full type inference, IDE autocomplete, and compile-time error checking out of the box

  • —

    Framework-agnostic core works with Next.js, Nuxt, SvelteKit, or any Node.js runtime. same Lago integration everywhere

  • —

    Built-in streaming UI primitives let you display Lago tool results progressively in React, Svelte, or Vue components

  • —

    Edge-compatible: the AI SDK runs on Vercel Edge Functions, Cloudflare Workers, and other edge runtimes for minimal latency

See it in action

Lago in Vercel AI SDK

AI Agent→Vinkius
High Security·Kill Switch·Plug and Play
Why Vinkius

Lago and 4,000+ other MCP servers. One platform. One governance layer.

Teams that connect Lago to Vercel AI SDK 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.

4,000+MCP Servers ready
<40msCold start
60%Token savings
Raw MCP
Vinkius
Server catalogFind and host yourself4,000+ managed
InfrastructureSelf-hostedSandboxed V8 isolates
Credential handlingPlaintext in configVault + runtime injection
Data loss preventionNoneConfigurable DLP policies
Kill switchNoneGlobal instant shutdown
Financial circuit breakersNonePer-server limits + alerts
Audit trailNoneEd25519 signed logs
SIEM log streamingNoneSplunk, Datadog, Webhook
HoneytokensNoneCanary alerts on leak
Custom domainsNot applicableDNS challenge verified
GDPR complianceManual effortAutomated purge + export
Unlock for AI Agents View step-by-step setup guide for Vercel AI SDK →
Enterprise Security

Why teams choose Vinkius for Lago in Vercel AI SDK

The Lago 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 Vercel AI SDK 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.

Unlock for AI Agents View full Lago details →
Lago
Fully ManagedVinkius Servers
60%Token savings
High SecurityEnterprise-grade
IAMAccess control
EU AI ActCompliant
DLPData protection
V8 IsolateSandboxed
Ed25519Audit chain
<40msKill switch
Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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

The Vinkius Advantage

How Vinkius secures Lago for Vercel AI SDK

Every tool call from Vercel AI SDK to the Lago MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start
Ed25519Signed audit chain
60%Token savings
FAQ

Frequently asked questions

01

How do I track a new usage event for a customer?

Use the send_event tool. You'll need to provide the customer's external ID and the metric code to record the consumption in real-time.

02

Can I create a new billing plan with specific charges?

Yes, use the create_plan tool. You can define the name, interval, and base amount, as well as pass a JSON object for specific charges.

03

Is it possible to apply a discount to a customer?

Absolutely. First, create a coupon using create_coupon, then use the apply_coupon tool to link it to a specific customer's external ID.

04

How does the Vercel AI SDK connect to MCP servers?

Import createMCPClient from @ai-sdk/mcp and pass the server URL. The SDK discovers all tools and provides typed TypeScript interfaces for each one.

05

Can I use MCP tools in Edge Functions?

Yes. The AI SDK is fully edge-compatible. MCP connections work on Vercel Edge Functions, Cloudflare Workers, and similar runtimes.

06

Does it support streaming tool results?

Yes. The SDK provides streaming primitives like useChat and streamText that handle tool calls and display results progressively in the UI.

07

createMCPClient is not a function

Install: npm install @ai-sdk/mcp

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