# Lago

> Probe-verified (tier 2 of 3). Last checked 2026-08-23. 2 of 5 capability checks passed.

- host: doc.getlago.com
- url: https://doc.getlago.com/
- category: billing platform documentation
- type: documentation
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-08-23 against rubric v1. 2 of 5 checks passed.

- fail — Markdown negotiation
- fail — Markdown twin at a predictable URL
- PASS — llms.txt
- fail — API catalog
- PASS — MCP server answers

MCP tools (from tools/list on 2026-08-23): search_lago, query_docs_filesystem_lago, submit_feedback

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **search** — "Search... ⌘ K"
- **book** — "Book a Demo"
- **register** — "Get Started"

## Summary

Documentation site for Lago's API-first billing platform covering usage metering, subscriptions, invoicing, payments, and revenue workflows.

## Context

4 sites in this index share the category "billing platform documentation"; 3 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known-Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark