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Data sources

CDP Bazaar API
PayAI Bazaar API
x402 specification
Source on GitHub

Ecosystem

Chest Gate · Solana revenue splits
x402 ecosystem directory
Bazaar (CDP discovery layer)

Index

Snapshot 2026-08-05 07:23:27 UTC
5906 servers · 2 facilitators · 4 chains
Sources: CDP Bazaar, PayAI Bazaar
License: data CC0, code MIT

x402.be · independent explorerNo login. No tracking. No affiliation.

stem.x402.press · /ask

https://stem.x402.press/stem/ask

Ask a multi-domain question combining chemistry, physics, and math computation.

BaseCCDP BazaarUnknown

Price · per callUSDC

$0.2500

Calls · 30d

30

Volume · 30dUSDC

$7.50

Unique payers · 30d

2

Calls per payerunknown

15

Healthnot probed (top 100 only)

—

Identity

What this profile is sourced from

Server id: stem-x402-press-stem-ask
Endpoint: https://stem.x402.press/stem/ask
Primary chain: Base
Also accepts: arbpolava
Listed by: CDP Bazaar

Caveats

Things to know before drawing strong conclusions

· Calls and volume are 30-day cumulative figures from the source facilitator. Daily breakdowns are not yet available — see /methodology.
· Volume = price × calls. If the server publishes multiple price tiers, only the first accepts[] entry is used.
· "Last call" is what the source last reported, refreshed every 60 seconds.

Last call observed

11d ago

Available via API

/api/v1/servers/stem-x402-press-stem-ask

Sample 402 exchange

Raw HTTP — what an agent observes

GET https://stem.x402.press/stem/ask

→ HTTP/1.1 402 Payment Required
  X-Payment-Required: $0.2500
  X-Payment-Currency: USDC
  X-Payment-Chain: base

GET https://stem.x402.press/stem/ask
  X-Payment: <signed-receipt>

→ HTTP/1.1 200 OK
  Content-Type: application/json
  …response body…