Fewer subscriptions.
More vibe-coding.

Open-source tools & agent skills to build the things you’re paying for.

Lago

Project10.7K

Self-hostable billing infrastructure that turns product usage into pricing, invoices, and revenue.

Added 2026-10-07
Replaces
GitHub

What you can build

  • Build an adapter that transforms application telemetry rows into Lago metering events with transaction IDs, outputting API-ready records for ingestion.
  • Build a CSV importer that maps legacy customer and subscription rows to Lago API requests, outputting a per-row success and error report.
  • Build a reconciliation script that matches invoice totals to customer-period usage records and outputs discrepancies for finance review.
  • Build a service that takes a customer and requested feature, checks Lago entitlements, and returns an allow-or-deny result to your application.
  • Build a parser for Lago's Prometheus metrics that takes a metrics scrape and outputs a concise report of selected API, queue, or worker measurements.

Try this prompt

Build a small end-to-end usage-event adapter for one application. Read a CSV of usage records, map its documented fields into Lago event payloads with stable transaction IDs, and submit them through Lago's API using the official OpenAPI specification for exact fields. Produce a report of accepted and failed rows, and keep the original input unchanged. Do not hard-code credentials or contact a live billing organization; include a test using sample data and document required configuration.

Get started

  1. Review deployment requirements

    For local source deployment, start with the repository README. It documents Docker Compose and a generated RSA key; the self-hosted guide covers configuration such as database, Redis, persistent storage, SMTP, and upgrades.

  2. Choose your integration surface

    Use Lago's REST API or SDKs for application billing workflows. The README links to the API reference, OpenAPI specification, and language-specific clients.

  3. Try the local demo

    The maintained AI billing demo requires Docker, curl, and jq. Follow its README instructions to start the isolated demo and inspect usage in the UI.

License & notes

AGPL-3.0The platform is AGPLv3. Self-hosting requires your own compute and deployment operations, plus supporting services such as a database, Redis, or object storage as needed. Payment-provider and any AI-model costs are separate. Lago Cloud and some Premium capabilities are commercial; costs depend on your choices. No prices are stated here.

  • AGPLv3 permits commercial use, but conveying modified versions has source and notice obligations. Users interacting remotely with a modified version may be entitled to its source; this can include internal users.
  • Self-hosting means operating Lago and its supporting infrastructure. Deployment configuration, persistence, upgrades, and payment-provider setup remain your responsibility.
  • The README notes that self-hosted instances collect basic product analytics by default; consult its tracking documentation for what is collected and how to opt out.

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