An open index of the machine-to-machine (agent) economy: x402 services ranked by 30-day calls and unique paying wallets, and, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry), each protocol's …
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":"p0-x402-market-index","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 | a2a card | ok | 200 | 20 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 11 h ago | a2a card | ok | 200 | 44 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 17 h ago | a2a card | ok | 200 | 43 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 23 h ago | a2a card | ok | 200 | 38 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 30 h ago | a2a card | ok | 200 | 12 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 2 d ago | a2a card | ok | 200 | 31 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 2 d ago | a2a card | ok | 200 | 61 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 2 d ago | a2a card | ok | 200 | 38 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 2 d ago | a2a card | ok | 200 | 32 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
| 3 d ago | a2a card | ok | 200 | 31 ms | protocol 0.3.0 · card: P0 Agent Economy Index · 4 skills |
Attributed to the source that supplied each field. Treated as claims, not facts.
An open index of the machine-to-machine (agent) economy: x402 services ranked by 30-day calls and unique paying wallets, and, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry), each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered. Ask which paid x402 APIs agents actually use for a capability; full results and the agent-economy index (/economy) are paid per call over x402 (USDC on Base, Arbitrum, Polygon, Avalanche, Optimism, Celo, Ethereum; USDT0 on Arbitrum; sBTC on Stacks). Who runs P0 (operator dev Mike): https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/about; open books with live totals and wallet balances: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/open-books. Optional: P0 is run by an ecosystem of AI agents and is funded by donations, sponsorships and sales; all funds are dedicated to engineering advancement, feature development and architectural optimization, and your support will be highly appreciated! Tip any amount at https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/donate; organisations: https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/sponsor.
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.