# Usefulapi Lago MCP server

Source: https://glimind.com/server/mcp-registry%2Fio.usefulapi%2Flago
Registry id: `mcp-registry/io.usefulapi/lago`
Status: auth-required (checked 2026-10-27T06:09:16.540Z)

## Verdict

Usefulapi Lago MCP server answered 100% of Glimind's liveness checks over 30 days, better than 42% of MCP servers, with 69 ms median handshake and 0 outages in 90 days. Its agent-readiness grade is A (96/100) across 24 tools, costing an agent about 3,918 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 100% | 42% of MCP servers |
| Median handshake latency | 69 ms | 87% of MCP servers |
| p95 handshake latency | 253 ms | — |
| Checks in 30 days | 221 | — |
| Outages, 90 days | 0 | — |
| Median recovery | — | — |
| Agent-readiness score | 96/100 (A) | 82% of MCP servers |
| Tools | 24 | — |
| Tool-list size for an agent | ~3,918 tokens | 42% of MCP servers |
| Days observed | 28 | — |

## Install

```json
{
  "mcpServers": {
    "usefulapi-lago-mcp-server": {
      "type": "http",
      "url": "https://lago.usefulapi.io/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http usefulapi-lago-mcp-server https://lago.usefulapi.io/mcp
```

## Tools (24)

- `lago_analytics_gross_revenue`: Monthly gross revenue (finalized invoice payments + advance fees, net of tax/discounts). Lago API: GET /analytics/gross_revenue.
- `lago_analytics_mrr`: Monthly recurring revenue (MRR) from subscription fees. Lago API: GET /analytics/mrr.
- `lago_create_customer`: Creates a customer in Lago (additive). Lago API: POST /customers with body { "customer": { ... } }.
- `lago_create_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 /eve
- `lago_get_billable_metric`: Retrieve a single billable metric by code. Lago API: GET /billable_metrics/{code}.
- `lago_get_credit_note`: Retrieve a single credit note by its Lago id. Lago API: GET /credit_notes/{lago_id}.
- `lago_get_customer`: Retrieve a single customer by external id. Lago API: GET /customers/{external_customer_id}.
- `lago_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`: Retrieve a customer's usage-based billing data for past periods. Lago API: GET /customers/{external_customer_id}/past_usage.
- `lago_get_customer_portal_url`: Get a customer's billing portal URL. Lago API: GET /customers/{external_customer_id}/portal_url.
- `lago_get_invoice`: Retrieve a single invoice by its Lago id. Lago API: GET /invoices/{lago_id}.
- `lago_get_plan`: Retrieve a single plan by code. Lago API: GET /plans/{code}.
- `lago_get_subscription`: Retrieve a single subscription by external id. Lago API: GET /subscriptions/{external_id}.
- `lago_list_add_ons`: List add-ons, paginated. Lago API: GET /add_ons.
- `lago_list_billable_metrics`: List billable metrics, paginated. Lago API: GET /billable_metrics.
- `lago_list_coupons`: List coupons, paginated. Lago API: GET /coupons.
- `lago_list_credit_notes`: List credit notes, optionally filtered by customer. Lago API: GET /credit_notes.
- `lago_list_customer_subscriptions`: List a customer's subscriptions. Lago API: GET /customers/{external_customer_id}/subscriptions.
- `lago_list_customers`: List customers in Lago, paginated. Lago API: GET /customers.
- `lago_list_fees`: List fees, optionally filtered by customer, subscription, or fee type. Lago API: GET /fees.
- `lago_list_invoices`: List invoices, optionally filtered by customer, status, payment status, or issuing date. Lago API: GET /invoices.
- `lago_list_plans`: List billing plans, paginated. Lago API: GET /plans.
- `lago_list_subscriptions`: List subscriptions, optionally filtered by customer, plan, or status. Lago API: GET /subscriptions.
- `lago_list_wallets`: List a customer's prepaid credit wallets. Lago API: GET /customers/{external_customer_id}/wallets.

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.