known·good search mcp servers how we grade about the index

search / directory / 3dprintingsa.co.za

The 3D Printing Network

3dprintingsa.co.za · visit site →

Probe-verified · tier 2 · checked 23 Aug 2026

South Africa's directory of 3D printing shops and service providers with tools for costing, quoting, and invoicing.

3d printing directoryZA3d printing3d scanningcnc machininglaser cutting

What we tested

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

PROBE-VERIFIEDtier 2 of 3
✓Markdown negotiationAccept: text/markdown
—Markdown twin at a predictable URL/page.md
✓llms.txt/llms.txt
—API catalogRFC 9727
—MCP server answers/.well-known/mcp/server-card.json → tools/list

What an agent could do here

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.

UNVERIFIED
search“Find a shop by service”
https://3dprintingsa.co.za/find/3d-printing

Context

351 sites in the index share the type directory, of which 188 are transactional.

How we grade

Three tiers. Every listing shows which one it has reached, and when. The rubric.

tier 1
Declared
The site says agents are welcome in its robots.txt. A permission, not a capability.
✓
tier 2
Probe-verified
We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
this site · 23 Aug 2026
tier 3
Behaviourally verified
An agent completed the action end to end — booked, bought, submitted — and it worked.
coming
Own this site?

3 checks did not pass when we last looked: Markdown twin at a predictable URL, API catalog, MCP server answers. Each is a small, specific fix; the rubric says exactly what we look for.

Behavioural verification — an agent completing your booking, purchase or contact flow end to end, with the date published here — opens to a small founding cohort first. Leave an email to be in it.

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Record generated from a live database query. Method: about the index.