Probe
Detect real HTTP 402 responses and decode v2 PAYMENT-REQUIRED headers or v1 payment bodies.
Discover paid APIs, agent tools, facilitators, directories, apps, networks and payment activity as they appear. Every indexed resource gets a stable page, machine-readable record and sitemap entry.
Machine indexGET https://x402mpp.sh/data/search.json
x402 is distributed by design. x402mpp.sh follows that shape: Bazaar catalogs, live 402 challenges, well-known manifests, sitemaps, facilitator lists, directories and submitted URLs all become evidence for one normalized graph.
Detect real HTTP 402 responses and decode v2 PAYMENT-REQUIRED headers or v1 payment bodies.
Read Bazaar discovery endpoints and public ecosystem indexes instead of trusting a single directory.
Map resources, networks, schemes, assets, payees, methods, providers and evidence into stable records.
Regenerate explorer data, detail pages, feeds, llms files and split XML sitemaps after every successful crawl.
The latest resources and ecosystem surfaces seen by the indexer.
Payment metrics are stored as sourced snapshots. x402mpp.sh keeps official ecosystem totals separate from third-party measured floors so the numbers remain attributable.
Read metric snapshots →Bazaar is one powerful source, not the only source. The index rotates through independent discovery lanes and preserves evidence for how each record entered the graph.
Submit any public URL. The crawler will probe it, follow discovery hints, and publish verified records automatically.