Verified trading card sales and prices by grade: Pokemon, Magic, Yu-Gi-Oh!, sports, Harry Potter.
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":"cardvolume","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.
Not distributed through a package registry we index.
| when | check | result | http | latency | detail |
|---|---|---|---|---|---|
| 5 h ago | mcp initialize | ok | 200 | 486 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 12 h ago | mcp initialize | ok | 200 | 466 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 18 h ago | mcp initialize | ok | 200 | 457 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 25 h ago | mcp initialize | ok | 200 | 511 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 32 h ago | mcp initialize | ok | 200 | 522 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 2 d ago | mcp initialize | ok | 200 | 432 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 2 d ago | mcp initialize | ok | 200 | 482 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 2 d ago | mcp initialize | ok | 200 | 477 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 2 d ago | mcp initialize | ok | 200 | 503 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 tools |
| 3 d ago | mcp initialize | ok | 200 | 479 ms | server cardvolume 1.0.0 · protocol 2025-06-18 · 4 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.