A live-verified index of sellers on the MPP payment protocol - 30 confirmed by a real, unpaid probe of their actual endpoint, not just claimed by a registry.
Agent402 itself accepts MPP payment on Base & Celo (USDC) - how MPP works here.
Every row here made a real, unpaid request that came back with a genuine WWW-Authenticate: Payment challenge - a registry listing alone is never enough to appear here.
Claude chat completions (Sonnet, Opus, Haiku) via native and OpenAI-compatible APIs.
POST /v1/messagesWeb search, page extraction, and multi-hop web research.
POST /api/search · $0.01Chat completions, embeddings, image generation, and audio with model-tier pricing.
POST /v1/responsesUnified API for 100+ LLMs with live per-model pricing.
POST /v1/chat/completionsReal-time flight tracking, prices, schedules, and airline data.
GET /airports-by-filters · $0.005Paid Pinata IPFS storage — upload and download public files via MPP.
POST /v1/pin/publicSend a fax to any phone number, priced per page. Pay-per-fax for AI agents — no signup, no API key; documents are never stored.
POST /v1/faxCAPTCHA solving API — reCAPTCHA, Turnstile, hCaptcha, image captchas, and more.
POST /createTask · $0.003Web scraping API with geo-targeting by country, state, and city. Fetch any public URL with JavaScript rendering support.
POST /v1/proxyReal-time and historical flight tracking, airports, airlines, and schedules.
GET /v1/aircraft_types · $0.005System of record for onchain finance. Real-time blockchain data: token prices, wallet balances, transactions, PnL, and SQL explorer.
POST /api/v1/developer/prices · $0.02Google Flights search — real-time prices, schedules, and booking options.
GET /search · $0.015Tempo blockchain JSON-RPC access (mainnet and testnet).
POST / · $0.001Competitor keyword research — SEO rankings, PPC ads, ad history, and domain analytics. 18+ years of historical data.
GET /apis/domain_stats_api/v2/* · $0.01S3/R2-compatible object storage with dynamic per-size pricing.
GET /:keyPaid Git repository creation — create repos and get authenticated clone URLs.
GET /repos/:id · $0.01Pay-per-request social media data from TikTok, Instagram, Facebook, and Reddit.
POST /api/tiktok/profile · $0.06Serverless GPU compute for sandboxed code execution and AI/ML workloads.
POST /sandbox/createWeb scraping, crawling, and structured data extraction for LLMs.
POST /v1/scrape · $0.002Sneaker & streetwear market data — prices, sales history, and availability from StockX, GOAT, and more.
GET /v3/stockx/products · $0.0005Pay-per-upload file hosting and static site hosting with custom domains — 6 month TTL.
POST /api/uploadImage, video, and audio generation with 600+ models (Flux, SD, Recraft, Grok).
POST /fal-ai/flux/dev · $0.025Pay-per-generation AI image and video creation — Nano Banana, GPT Image, Grok, Flux, Sora, Veo, Seedance, and Wan.
POST /api/generate/nano-banana/generate · $0.039AI phone calls, dedicated phone numbers, and iMessage/FaceTime lookup — pay per request.
POST /api/call · $0.54Pay-per-send email delivery, forwarding inboxes, and custom subdomains — no API keys or accounts.
POST /api/send · $0.02Neural web search and page-content retrieval for AI agents, paid per request with no API key.
POST /searchPay-per-request research APIs — people, companies, web search, scraping, places, social media, and contact enrichment.
POST /api/apollo/people-search · $0.02Domain registration on the Doma blockchain. Instantly register .com, .xyz, .ai, .io, and .net domains.
POST /registerEmail inboxes for AI agents.
GET /v0/inboxes99 candidate origins discovered, 30 independently verified so far - a gap is normal (re-probe pending, or a listing that no longer answers), never hidden.
Two known scope limits, disclosed rather than hidden: sellers hosted as per-tenant paths on one shared gateway domain aren't discoverable yet, and self-serve registration for a seller not already in the mpp.dev registry can only verify at the bare origin root (MPP has no standard discovery path the way x402's /.well-known/x402 is).
A directory of services that accept payments over MPP (the IETF-track "Payment" HTTP auth scheme). Every listing here has been independently, live-verified - a real unpaid request confirming the seller's endpoint genuinely answers with a WWW-Authenticate: Payment challenge - not just copied from a registry's claim.
Different protocol, different seller population, and a separate crawler entirely. An MPP seller isn't necessarily an x402 seller and vice versa; Agent402 itself supports both, as a buyer-facing wire translation on its own tools and as a neutral index for each ecosystem.
By appearing in the public mpp.dev registry, which this index crawls, or by registering directly at POST /api/mpp-index/register. Listing is free and there is no review queue - verification is automatic and live.
Discovery finds candidate origins from the registry; verification is our own real probe of each one. A gap between the two is normal - a fresh discovery awaiting its first probe, or a listing that no longer answers - and is always shown, never hidden.
machine-readable: mpp.dev/api/services