Validate EU, UK, AU VAT numbers for AI agents. EU ViDA e-invoicing compliance.
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"vat-validator-mcp","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
| when | check | result | http | latency | detail |
|---|---|---|---|---|---|
| 6 h ago | mcp initialize | ok | 200 | 156 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 12 h ago | mcp initialize | ok | 200 | 153 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 20 h ago | mcp initialize | ok | 200 | 156 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 27 h ago | mcp initialize | ok | 200 | 250 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 32 h ago | mcp initialize | ok | 200 | 156 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 2 d ago | mcp initialize | ok | 200 | 153 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 2 d ago | mcp initialize | ok | 200 | 176 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 2 d ago | mcp initialize | ok | 200 | 151 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 2 d ago | mcp initialize | ok | 200 | 180 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
| 3 d ago | mcp initialize | ok | 200 | 154 ms | server vat-validator-mcp 2.0.44 · protocol 2024-11-05 · 2 tools |
Attributed to the source that supplied each field. Treated as claims, not facts.
No long description beyond the summary.
Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.
Every source is kept verbatim. Field changes are logged as events.