x402 paid APIs: MCP servers, A2A agents and x402 APIs

Pay-per-call HTTP APIs that accept x402 payments (USDC), callable by agents with no account or API key. 1220 listings in the Rooms directory, 1210 answering our latest daily check. Each one links to its endpoint, how to call it and its live status.

SmithTalks sealing and verdicts Live x402
Paid work with a receipt you can check offline. Five priced endpoints over HTTP 402: sealing a sha-256 hash into a public signed Merkle chain (0.05 USDC), a signed verdict on one of your claims with the evidence actuall…
x402 paid API · check 93/100
Agent402.Tools Live x402
Agentic Finance for AI agents: 500+ pay-per-call tools, metered models and finished reports over x402 and MPP, or by card. No signup, no API keys.
x402 paid API · 12 endpoints · check 90/100
AgentBIT API Live x402
Autonomous API & AI agent tools, monetized per call via the x402 payment protocol.
x402 paid API · 12 endpoints · check 90/100
AgentPay Gateway Live x402
Buyer-side trust layer for x402 agents. verified_route ranks providers on paid delivery evidence and sybil-collapsed payer counts; pre_trade_check returns an ok/caution/avoid verdict before a trade; session_create opens…
x402 paid API · 3 endpoints · check 90/100
Apify Live x402
Apify is the largest and most trusted marketplace of tools for web scraping, crawling, data extraction, and automation. Buy a prepaid, spend-capped Apify API token to unlock Actors that extract structured data from soci…
x402 paid API · 1 endpoint · check 90/100
ApiToll SEC EDGAR smart-money suite Live x402
ApiToll runs pay-per-call data agents on x402 (USDC on Base + Solana). This suite returns normalized SEC EDGAR data by ticker or CIK — corporate filings (10-K / 10-Q / 8-K), Form 4 insider trades, and 13F-HR institution…
x402 paid API · 3 endpoints · check 90/100
Arkham x402 Live x402
Pay-per-request Arkham wallet intelligence and market data API protected by x402.
x402 paid API · 5 endpoints · check 90/100
AsterPay API Live x402
Public API accepting x402 and MPP payments. KYA trust scoring, merchant discovery, USDC to EUR via SEPA Instant in under 10 seconds.
x402 paid API · 12 endpoints · check 90/100
Bitrefill x402 Live x402
Buy gift cards, eSIMs, mobile top-ups and prepaid cards with USDC via x402. 10,000+ brands across 180+ countries. No API keys or Bitrefill account required — wallet payment and optional SIWX sign-in only.
x402 paid API · 8 endpoints · check 90/100
BlockRun AI Gateway Live x402
Agent-native AI gateway. Pay-per-request with USDC on Base. No accounts or API keys required.
x402 paid API · 12 endpoints · check 90/100
Brave Search API Live x402
Web search over Brave's independent index. Returns ranked pages with title, URL, and snippet, plus news, video, and discussion results when relevant. Use it to find current sources on any topic. Pass q, and optionally c…
x402 paid API · 8 endpoints · check 90/100
CheapTokens API Live x402
Machine-readable API for discovering CheapTokens pricing/supply, choosing x402 or card checkout routes, purchasing discounted Venice.ai API credits, inspecting Same-Day and Prepaid API Key status, recovering card-purcha…
x402 paid API · 1 endpoint · check 90/100
Coil Scanner Agent API Live x402
Market data and trading signals for AI agents, paid per call in USDC — no account, no API key, no signup. New here? Start with GET /api/crypto/gate — $0.001, the cheapest answer we sell and the most common first call: i…
x402 paid API · 12 endpoints · check 90/100
CoinCap API Live x402
CoinCap gives AI agents, apps, and developers real-time cryptocurrency market data. Two ways to access: - **API key** — sign up at https://coincap.io and pass `Authorization: Bearer <key>` or `?apiKey=<key>`. - **Keyles…
x402 paid API · 11 endpoints · check 90/100
corpusAI Cloud Pricing Live x402
Cloud price history for AWS, GCP and Azure, from price-change events per zone to monthly series back to 2014, GPU rental prices across neo-clouds and marketplaces, and LLM token prices per model: free charts, and an API…
x402 paid API · 12 endpoints · check 90/100
gitBeacon API Live x402
gitBeacon — GitHub trend intelligence for AI agents. A daily scan of trending new GitHub repos, LLM-analyzed into a structured digest (title, summary, top categories, language trends, emerging tools, notable projects, a…
x402 paid API · 1 endpoint · check 90/100
Glassnode Live x402
For finance professionals and institutions. Glassnode integrates trusted digital asset market and on-chain data, analytics, and research in one platform.
x402 paid API · 12 endpoints · check 90/100
JAW.id API Live x402
ENS resolution, reverse resolution and identity enrichment for agents, pay per call in USDC on Base via x402 or MPP.
x402 paid API · 3 endpoints · check 90/100
Laso Finance Live x402
Convert stablecoins (USDC, USDT, DAI) to spendable prepaid cards and gift cards instantly. Works with Google Pay. Multi-chain: Ethereum, Solana, Stellar, Arbitrum, Base, Polygon.
x402 paid API · 8 endpoints · check 90/100
LION Verified Company Data Live x402
Keyless x402 on Base USDC for AI agents: cheapest OFAC wallet screen ($0.001), multi-list sanctions + signed compliance receipt, company research/org enrich from $0.03, verified company file $0.95. Live Wikidata+SEC+DNS…
x402 paid API · 12 endpoints · check 90/100
Mekler AI Live x402
x402 service diagnostics, annual SEC financial facts, CSV validation, citation-source comparison, web extraction and email domain checks for agents. Retrieve six annual US-GAAP USD fields by CIK with filing links, same-…
x402 paid API · 8 endpoints · check 90/100
Minifetch Live x402
Minifetch is a hosted toolkit for web developers and AI agents. Always pay-per-fetch, no subscription.
x402 paid API · 7 endpoints · check 90/100
Mycelia Signal Live x402
Mycelia Signal Sovereign Oracle — three-layer data pyramid. Layer 1 Oracle Data (raw signed measurements), Layer 2 Oracle Information (structured context), Layer 3 Oracle Intelligence (cross-domain pattern recognition),…
x402 paid API · 12 endpoints · check 90/100
Nansen AI Live x402
Nansen blockchain analytics API. Pay-per-call via x402 — no API key required. MPP (Tempo) is also available as an alternate payment rail.
x402 paid API · 12 endpoints · check 90/100
NodeFlare Live x402
Build on EVM RPC operated by NodeFlare. Published compute-unit prices, regional failover and a free 3M CU plan. Pay by card or crypto.
x402 paid API · 12 endpoints · check 90/100
Omni Terminal Live x402
Modern Hyperliquid trading terminal and dashboard with live execution, AI news, liquidation analytics, trader data, and an IBKR stocks and options private beta.
x402 paid API · 3 endpoints · check 90/100
OneSource Live x402
OneSource - three data families for AI agents on one host: Ethereum mainnet, Sepolia testnet, and Robinhood Chain RPC (served from OneSource-operated nodes), plus Deepstate on-chain market data (order books, trades, can…
x402 paid API · 12 endpoints · check 90/100
Otto AI x402 Live x402
Otto AI runs a swarm of autonomous agents exposing 84 pay-per-call services on x402 V2 across eight capability tags — Market & Token Intelligence, DeFi & Markets Data, Web & Domain Intelligence, Real-World Data, AI Crea…
x402 paid API · 12 endpoints · check 90/100
Pocket Network Agentic Portal Live x402
Pay-per-call access to Pocket Network services. No account, no API key.
x402 paid API · 12 endpoints · check 90/100
StableBrowser Live x402
Pay-per-session browser automation. Create a real browser session ($0.10) and control it with AI-powered navigate, act, extract, observe, screenshot, and url actions.
x402 paid API · 1 endpoint · check 90/100
StableEnrich Live x402
Pay-per-request access to FullEnrich, CompanyEnrich, LeadMagic, Exa, Firecrawl, Google Maps, Serper, and Whitepages APIs. No auth, no subscriptions.
x402 paid API · 12 endpoints · check 90/100
StableTravel Live x402
Pay-per-request access to flight prices and booking links (Google Flights via SerpAPI), award availability (Seats.aero), and real-time flight tracking, airport info, history, and predictions (FlightAware AeroAPI). No au…
x402 paid API · 12 endpoints · check 90/100
TenPrint Live x402
Post-quantum attestation and evidence services for AI agents. Every paid response carries an ML-DSA-65 (FIPS 204) signed attestation anchored to Hedera mainnet HCS, with free public verification. Payment: x402 (USDC on…
x402 paid API · 12 endpoints · check 90/100
Toolsmith Live x402
Keyless pay-per-call APIs for AI agents: 30 tools across compliance, trade, safety, web and data. Pay per call with USDC on Base via x402. No account, no API key.
x402 paid API · 12 endpoints · check 90/100
Vaaya Live x402
Credit infrastructure for AI agents. They spend on credit, you settle later, with controls on every transaction.
x402 paid API · 12 endpoints · check 90/100
x402 Atlas Web Search, News & Page Reader Live x402
Real-time web search for AI agents — search the web and get ranked SERP-style results as clean JSON: title, URL, snippet, relevance score, optional LLM-generated answer. Find up-to-date information online — latest news,…
x402 paid API · 4 endpoints · check 90/100
x402engine Live x402
125 production APIs behind HTTP 402 micropayments. 87 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, US…
x402 paid API · 12 endpoints · check 90/100
x402node Live x402
x402node — precise, deterministic developer and data tools for AI agents. Chain data, parsing, crypto, conversion. Pay-per-call over x402, settled in USDC on Base.
x402 paid API · 12 endpoints · check 90/100
x402scan Live x402
Query indexed x402 payment data and send USDC on Base and Solana.
x402 paid API · 10 endpoints · check 90/100
Agent Restaurant Reservation API Live x402
Agent-first API for searching and booking restaurant reservations via Resy, including reservation jobs that book hard-to-get tables the moment reservations open. Supports MPP (Tempo) and x402 (Base/Solana) wallet auth,…
x402 paid API · 4 endpoints · check 89/100
ApiToll Crypto & DeFi market data Live x402
ApiToll runs pay-per-call data agents on x402 (USDC on Base + Solana). This service returns real-time crypto + DeFi market data — token prices, DeFi yields, TVL, stablecoin supply, and DEX volume — paid per call, no sub…
x402 paid API · 11 endpoints · check 89/100
botsmith Live x402
Pay-per-call HTTP APIs for agents. No accounts, no API keys: unpaid requests return 402 with x402 payment requirements; retry with a payment authorization to get data. Free machine-readable catalog at /catalog.
x402 paid API · 8 endpoints · check 89/100
Chit402 Live x402
Signed spend receipts for agent x402 payments — who paid which call, verifiable by a third party. Treasury desk for agent spend — export, policy, evidence. Possession book for principals. POST /v1/chat/completions retur…
x402 paid API · 1 endpoint · check 89/100
CoinMarketCap Live x402
Top cryptocurrency prices and charts, listed by market capitalization. Free access to current and historic data for Bitcoin and thousands of altcoins.
x402 paid API · 3 endpoints · check 89/100
Quartermaster Live x402
Small, reliable utility APIs for AI agents. Paid endpoints charge per call in USDC over the x402 protocol (HTTP 402 flow) - no accounts, no API keys. Free endpoints are open.
x402 paid API · 12 endpoints · check 89/100
twit.sh Live x402
Payment-gated Twitter/X user and tweet lookup API. Pay per request in USDC on Base via x402.
x402 paid API · 12 endpoints · check 89/100
You.com Live x402
Skip the groundwork with our AI-ready Web Search APIs, delivering advanced search capabilities to power your next product.
x402 paid API · 2 endpoints · check 83/100
api.agentstools.dev Live x402
Keyword news search across web news engines (Bing/DuckDuckGo/Yahoo via ddgs). Returns dated headlines with title/url/snippet/source/image + freshness/region/safesearch filters.
x402 paid API · 12 endpoints · check 80/100

Related capabilities

On-chain data Trading & markets Research AI models & inference Agent infrastructure Web scraping Maps & travel Email

How to use one

MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.

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