Pay-per-call APIs for AI agents via x402 v2 (exact scheme, Base mainnet, USDC). No accounts or API keys: send a request, receive HTTP 402 with payment requirements, pay, retry. The skills list below carries every live API with its current price; /pricing is the authoritative catalog.
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":"x402-agent-services","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 |
|---|---|---|---|---|---|
| 3 h ago | a2a card | ok | 200 | 491 ms | card: x402 Agent Services · 12 skills |
| 9 h ago | a2a card | ok | 200 | 715 ms | card: x402 Agent Services · 12 skills |
| 16 h ago | a2a card | ok | 200 | 460 ms | card: x402 Agent Services · 12 skills |
| 22 h ago | a2a card | ok | 200 | 426 ms | card: x402 Agent Services · 12 skills |
| 29 h ago | a2a card | ok | 200 | 881 ms | card: x402 Agent Services · 12 skills |
| 2 d ago | a2a card | ok | 200 | 612 ms | card: x402 Agent Services · 8 skills |
| 2 d ago | a2a card | ok | 200 | 524 ms | card: x402 Agent Services · 8 skills |
| 2 d ago | a2a card | ok | 200 | 683 ms | card: x402 Agent Services · 8 skills |
| 3 d ago | a2a card | ok | 200 | 649 ms | card: x402 Agent Services · 8 skills |
| 3 d ago | a2a card | ok | 200 | 778 ms | card: x402 Agent Services · 8 skills |
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.