# Upstream.so

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

- host: upstream.so
- url: https://upstream.so/
- category: live streaming platform
- type: saas
- language: en

## 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
- PASS — llms.txt
- fail — 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.

- **register** — "Start Streaming Free" → `https://studio.upstream.so/register?utm_source=upstream.so&utm_medium=referral&utm_campaign=homepage_signup&utm_content=homepage_home_homepage_body&intent_bucket=homepage&signup_surface=homepage&signup_feature=homepage&signup_page=home&signup_section=homepage_body&cta_placement=home_homepage_body&cta_intent=register&content_group=homepage`

## Summary

Upstream.so provides a platform to run 24/7 YouTube live streams from pre-recorded videos, schedule broadcasts, multistream to major platforms, and use a live studio in the browser.

## Context

2006 sites in this index share the type "saas"; 1410 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