# Grupa Tree

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

- host: www.tree.com.pl
- url: https://www.tree.com.pl/
- category: demolition and earthworks company
- type: business
- country: PL
- locations: Poland
- language: pl

## 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** — "Poznaj naszą historię" → `https://www.tree.com.pl/about/`
- **read** — "Dowiedz się więcej" → `https://www.tree.com.pl/solutions/comprehensive-demolition/`
- **read** — "Dowiedz się więcej" → `https://www.tree.com.pl/solutions/precision-earthworks/`
- **read** — "Dowiedz się więcej" → `https://www.tree.com.pl/solutions/construction-materials-recycling/`
- **read** — "Zobacz szczegóły" → `https://www.tree.com.pl/knowledge/realizations/rozbirka-poudniowego-wiaduktu-trasy-azienkowskiej-nad-ulic-parysk-w-warszawie/`
- **read** — "Zobacz szczegóły" → `https://www.tree.com.pl/knowledge/realizations/kompleksowa-rozbirka-fabryki-samochodw-osobowych-fso-na-warszawskim-zeraniu/`

## Summary

Grupa Tree provides demolition, earthworks, and construction material recycling services in Poland and internationally with 25 years of experience.

## Context

3040 sites in this index share the type "business"; 1936 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