# simfuse.app — internet and telecom providers — 3 of 5

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> Probe-verified (tier 2 of 3). Last checked 2026-09-26. 3 of 5 capability checks passed. 2 unknown.

- host: simfuse.app
- url: https://simfuse.app/
- category: internet and telecom providers
- type: business
- language: en

## Probe-verified · tier 2 of 3

Probed live on 2026-09-26 against rubric v1.2. 3 of 5 checks passed. 2 unknown.

- UNKNOWN — Markdown negotiation (`Accept: text/markdown`)
- UNKNOWN — Markdown twin at a predictable URL (`/page.md`)
- PASS — llms.txt (`/llms.txt`)
- PASS — API catalog (`RFC 9727`)
- PASS — MCP server card answers (`/.well-known/mcp/server-card.json → tools/list`)

MCP tools (from tools/list on 2026-09-26, served from api.simfuse.app): plan-trip, list-destinations, get-destination-info, list-plans, get-plan, build-plan, get-plan-coverage, check-coverage, get-checkout-link, create-checkout-session, get-order-status, get-esim-activation, check-esim-usage, list-topup-options

## 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.

- **buy** — "" → `https://api.simfuse.app/agentic/x402/purchase`
- **quote** — "" → `https://simfuse.app/agentic/trips/quote/?stops=JP:14,KR:4&usage=regular&currency=EUR`
- **register** — "" → `https://api.simfuse.app/agentic/registration`

## Summary

Prepaid travel mobile data plans delivered as eSIMs for 205+ countries, bought online and installed instantly with no physical SIM or roaming fees. Offers multi-country trip pricing and live currency pricing.

## Context

130 sites in this index share the category "internet and telecom providers"; 38 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

How we found this site: probe discovery. This site didn't declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. [How we choose what to check, and how to opt out](https://knowngood.sh/bot)

## Where this sits

- business: https://knowngood.sh/type/business
- internet and telecom providers: https://knowngood.sh/category/internet-telecom-providers
- travel (also in): https://knowngood.sh/category/travel
- Browse: https://knowngood.sh/browse
- Rubric: https://knowngood.sh/benchmark