Read Lago customers, subscriptions, invoices, usage and revenue analytics; write events. Hosted by usefulapi — connect from Claude, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"lago": {
"url": "https://lago.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"lago": {
"type": "http",
"url": "https://lago.usefulapi.io/mcp"
}
}
}Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
The login page asks for your Lago API key.
Find it in Lago → Developers → API keys. For self-hosted or EU Lago, the base URL is configured server-side (LAGO_BASE_URL). Your key is used only to call the API on your behalf and to derive a private account id; it is never shown to anyone.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Lago API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Turn on the Lago connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
lago_list_customers | read | List customers List customers in Lago, paginated. Lago API: GET /customers. |
lago_get_customer | read | Get customer Retrieve a single customer by external id. Lago API: GET /customers/{external_customer_id}. |
lago_get_customer_current_usage | read | Get customer current usage Retrieve a customer's usage-based billing data for the current period. Lago API: GET /customers/{external_customer_id}/current_usage. |
lago_get_customer_past_usage | read | Get customer past usage Retrieve a customer's usage-based billing data for past periods. Lago API: GET /customers/{external_customer_id}/past_usage. |
lago_list_customer_subscriptions | read | List customer subscriptions List a customer's subscriptions. Lago API: GET /customers/{external_customer_id}/subscriptions. |
lago_get_customer_portal_url | read | Get customer portal URL Get a customer's billing portal URL. Lago API: GET /customers/{external_customer_id}/portal_url. |
lago_list_subscriptions | read | List subscriptions List subscriptions, optionally filtered by customer, plan, or status. Lago API: GET /subscriptions. |
lago_get_subscription | read | Get subscription Retrieve a single subscription by external id. Lago API: GET /subscriptions/{external_id}. |
lago_list_plans | read | List plans List billing plans, paginated. Lago API: GET /plans. |
lago_get_plan | read | Get plan Retrieve a single plan by code. Lago API: GET /plans/{code}. |
lago_list_invoices | read | List invoices List invoices, optionally filtered by customer, status, payment status, or issuing date. Lago API: GET /invoices. |
lago_get_invoice | read | Get invoice Retrieve a single invoice by its Lago id. Lago API: GET /invoices/{lago_id}. |
lago_list_billable_metrics | read | List billable metrics List billable metrics, paginated. Lago API: GET /billable_metrics. |
lago_get_billable_metric | read | Get billable metric Retrieve a single billable metric by code. Lago API: GET /billable_metrics/{code}. |
lago_list_coupons | read | List coupons List coupons, paginated. Lago API: GET /coupons. |
lago_list_add_ons | read | List add-ons List add-ons, paginated. Lago API: GET /add_ons. |
lago_list_wallets | read | List wallets List a customer's prepaid credit wallets. Lago API: GET /customers/{external_customer_id}/wallets. |
lago_list_credit_notes | read | List credit notes List credit notes, optionally filtered by customer. Lago API: GET /credit_notes. |
lago_get_credit_note | read | Get credit note Retrieve a single credit note by its Lago id. Lago API: GET /credit_notes/{lago_id}. |
lago_list_fees | read | List fees List fees, optionally filtered by customer, subscription, or fee type. Lago API: GET /fees. |
lago_analytics_gross_revenue | read | Analytics: gross revenue Monthly gross revenue (finalized invoice payments + advance fees, net of tax/discounts). Lago API: GET /analytics/gross_revenue. |
lago_analytics_mrr | read | Analytics: MRR Monthly recurring revenue (MRR) from subscription fees. Lago API: GET /analytics/mrr. |
lago_create_customer | write | Create customer Creates a customer in Lago (additive). Lago API: POST /customers with body { "customer": { ... } }. |
lago_create_event | write | Create usage event Records a usage/metering event in Lago. This WILL be counted toward the customer's usage and affects billing. Idempotent via transaction_id. Lago API: POST /events with body { "event": { ... } }. |
lago_usage_status | Usage status (free-tier meter) Report the caller's current free-tier usage this month: calls used, monthly limit, remaining, and whether the cap is reached. Read-only; does not count against the meter. | |
lago_request_feature | Request a missing feature Tell usefulapi that the user needs something the Lago tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. | |
lago_upgrade | Upgrade to Pro (unlimited) Subscribe to the Pro plan for UNLIMITED Lago tool calls (the free tier caps monthly usage). Choose monthly ($9/month) or yearly ($90/year — 2 months free) billing. Returns a Stripe Checkout link to open in your browser; after payment your account upgrades automatically. Does not count against the meter. | |
lago_cancel_subscription | Cancel the Pro subscription Cancel the caller's Lago Pro subscription at the end of the paid period (no refund for the current period; unlimited calls continue until then, then the free tier applies). Requires confirm: true. Run lago_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 100 tool calls / month |
| Pro | $9/mo · $90/yr | Unlimited |
Pro covers this Lago server only. Subscribe with lago_upgrade (it returns a Stripe Checkout link). Cancel any time with lago_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running lago_upgrade before then undoes the cancel. Or write to [email protected].
No. usefulapi is an independent service. It is not affiliated with or endorsed by Lago. The server calls the Lago API with your own Lago access, so it sees only the data that your account can see.
The login page asks for your Lago API key. See Before you connect for where to find it.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Lago API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Lago API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Lago.
Yes, if you approve it. 2 of the 24 Lago tools can create or change data. The other 22 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 100 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls, for this Lago server only. Run lago_usage_status to see how many calls you used.
Ask the AI to run lago_upgrade: it returns a Stripe Checkout link. To cancel, run lago_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with lago_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.