Pay-per-call Open Graph/link preview metadata for AI agents. $0.01 USDC per call, no signup.
Listed on its own since 2026-09-25. Until then it was part of content-moderation-api, where its earlier checks remain.
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":"link-preview-api","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 |
|---|---|---|---|---|---|
| 4 h ago | mcp initialize | ok | 200 | 741 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 11 h ago | mcp initialize | ok | 200 | 801 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 17 h ago | mcp initialize | ok | 200 | 779 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 23 h ago | mcp initialize | ok | 200 | 689 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 29 h ago | mcp initialize | ok | 200 | 414 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 2 d ago | mcp initialize | ok | 200 | 464 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 2 d ago | mcp initialize | ok | 200 | 380 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 2 d ago | mcp initialize | ok | 200 | 710 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 2 d ago | mcp initialize | ok | 200 | 421 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 tools |
| 3 d ago | mcp initialize | ok | 200 | 583 ms | server Link Preview API 1.29.1 · protocol 2025-06-18 · 1 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.