# sim.do

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

- host: sim.do
- url: https://sim.do/
- category: esim data plans
- type: ecommerce
- locations: 194+ countries
- language: de

## Probe-verified · tier 2 of 3

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

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

## 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.

- **read** — "Countries overview: https://sim.do/countries/" → `https://sim.do/countries/`
- **read** — "Regions overview: https://sim.do/regions/" → `https://sim.do/regions/`
- **read** — "JSON feed: https://sim.do/feeds/product-catalog.json" → `https://sim.do/feeds/product-catalog.json`

## Summary

sim.do offers prepaid eSIM data plans for international travelers covering 194+ countries with instant activation and no physical SIM needed.

## Context

2 sites in this index share the category "esim data plans"; 0 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