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. 1223 listings in the Rooms directory, 1213 answering our latest daily check. Each one links to its endpoint, how to call it and its live status.

helpmyagent.com Live x402
Searches French companies by name, SIREN, SIRET or optional location criteria and returns structured matching company records.
x402 paid API · 1 endpoint
helprentdanang.com Live x402
Long-term rental listings in Da Nang, Vietnam: search by district, property type, bedrooms and monthly price in VND. Use when an agent needs current rentals with prices, districts and listing URLs (contacts are on the l…
x402 paid API · 1 endpoint
hermesplant.com Live x402
AI agent action safety: one-cent deterministic preflight for every consequential agent command. Returns risk, matched rule ids, and an exact machine-readable escalation call: full DestructGuard evidence for medium risk…
x402 paid API · 1 endpoint
hk-cm-kg.ai Live x402
One paid call on hk-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an…
x402 paid API · 1 endpoint
hl-tool.darren-pi.workers.dev Live x402
Full Hyperliquid funding extremes (carry-cost leaderboard)
x402 paid API · 1 endpoint
holdsup.app Live x402
Published fact-checked episodes, newest first, with optional filters by category slug, show id or speaker slug. Paged. (2 paid endpoints on holdsup.app.)
x402 paid API · 2 endpoints
holidays.use.x402atlas.com Live x402
Holiday date check by country or subdivision — determine whether one ISO date is an official public holiday. (5 paid endpoints on holidays.use.x402atlas.com.)
x402 paid API · 5 endpoints
horizonpulse.dev Live x402
Crypto market data. Use when you need current BTC, ETH and SOL spot prices in USD. Call GET with no parameters. Returns JSON: assets.BTC/ETH/SOL with priceUsd, change24hPct and momentum (bullish/bearish/neutral), plus o…
x402 paid API · 12 endpoints
horrorstoryapi.vercel.app Live x402
Access the exclusive horror story collection (pay-per-read).
x402 paid API · 1 endpoint
hosaka-agents.vercel.app Live x402
Use when you have a company domain and need to know what the company is before spending more. Returns the company name and site title, domain age, registrar, mail provider, DNS provider, DMARC and HTTPS status, and a co…
x402 paid API · 1 endpoint
hotels.use.x402atlas.com Live x402
Hotel search — find hotels & vacation rentals anywhere by destination with live nightly rates, star class, guest ratings, amenities, photos & coordinates as clean JSON. (4 paid endpoints on hotels.use.x402atlas.com.)
x402 paid API · 4 endpoints
houjin.agentic-jp.com Live x402
Dataset metadata for this Japanese (JP) corporate-number API — how many corporations are loaded and which prefectures are covered. (3 paid endpoints on houjin.agentic-jp.com.)
x402 paid API · 3 endpoints
html.openverbs.com Live x402
Remove all HTML tags, returning the plain text content. Entities are decoded to real characters by default (set decodeEntities=false to keep them encoded). (4 paid endpoints on html.openverbs.com.)
x402 paid API · 4 endpoints
http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run Live x402
Detect material public DNS answer changes with a deterministic hash. TTL-only changes do not count and no arbitrary resolver or AXFR operation is exposed. Base mainnet USDC (95 paid endpoints on http--forest-gas-station…
x402 paid API · 12 endpoints
http-header-checker.underscoredone.com Live x402
Sends a request to a web address you provide and reports back everything the server said in response: the status code, all the response headers, how many times it got redirected, and how long the whole thing took.
x402 paid API · 1 endpoint
http-status-checker.underscoredone.com Live x402
Give this API a list of up to 10 web addresses and it will visit each one to tell you whether it is working, broken, or redirecting visitors somewhere else. You get back the exact status number (like 200 for OK, 404 for…
x402 paid API · 1 endpoint
HumanMirror Discovery Agent Live A2A
HumanMirror is an independent agent control plane for autonomous systems: capability routing, pre-execution safety, agent action guardrails, fleet policy, machine payments and machine-readable execution evidence. Canoni…
A2A agent · HumanMirror · 12 skills
humanmirror.fr Live x402
Preflight a proposed command or AI-agent tool call before execution and verify that operational risk stays within the declared limit. (4 paid endpoints on humanmirror.fr.)
x402 paid API · 4 endpoints
hydratrader.ai Live x402
Summarize text. Classify sentiment. Rewrite. Extract keywords. Translate. When to use: cheap agent glue / probe steps for buyer-supplied text. Returns JSON for $0.01 per call in USDC on Base via x402. No API key. Local-…
x402 paid API · 9 endpoints
hyperliquid-predict.use.x402atlas.com Live x402
The catalog of Hyperliquid prediction-market outcomes and their metadata. (2 paid endpoints on hyperliquid-predict.use.x402atlas.com.)
x402 paid API · 2 endpoints
hyperliquid.use.x402atlas.com Live x402
Current mid price for every Hyperliquid asset (perps + spot) in one call — a fast whole-venue price snapshot. (9 paid endpoints on hyperliquid.use.x402atlas.com.)
x402 paid API · 9 endpoints
hypernatt.com Live x402
Forced-order map. If cluster_grammar is present, read it before liq_radar. class=noise (<3%) is high-leverage bait - ignore. class=true (~7%+) is the low-leverage stack. Terrain, not a signal. Whitelist BTC ETH SOL BNB…
x402 paid API · 2 endpoints
ical.openverbs.com Live x402
Build a valid .ics document from event fields (summary, start/end, location, …). (2 paid endpoints on ical.openverbs.com.)
x402 paid API · 2 endpoints
Ichimoku Signal Live MCP
Free Ichimoku trend; paid confluence, levels, market scan and liquidity-ranked setups via x402.
MCP server · io.github.Fizzl13
ideafactorylab.org Live x402
Current weather for any city. Pass ?city=London (4 paid endpoints on api.ideafactorylab.org.)
x402 paid API · 4 endpoints
id.openverbs.com Live x402
Generate one or more lexicographically sortable ULIDs (monotonic within a call). (4 paid endpoints on id.openverbs.com.)
x402 paid API · 4 endpoints
imagegen.coinopai.com Live x402
Prompt Styles — a curated FLUX prompt-engineering cheat sheet: 12 proven style recipes, an aspect-ratio guide, and a tier picker for the paid /generate endpoints. Static JSON, answers in milliseconds. Spend $0.001 here…
x402 paid API · 6 endpoints
imgopt.use.x402atlas.com Live x402
Convert and compress images to WebP, AVIF, JPEG or PNG. Optimize and shrink photos for web and CDN delivery from any image URL.
x402 paid API · 1 endpoint
immuta.app Live x402
Latest PulseChain block number and timestamp.
x402 paid API · 1 endpoint
Income Factory Toll Fabric Live MCP
Eight metered machine-intelligence tools for AI agents with native x402 payment paths.
MCP server · io.github.DataPunterAU
insider.lonestaroracle.xyz Live x402
Insider trades — SEC Form 4 buys and sells by officers and directors for any ticker
x402 paid API · 1 endpoint
IntentGuard Router Live A2A
AI task router that selects the best model, cheapest acceptable alternative, optimized prompt and fallback before execution.
A2A agent · IntentGuard · 2 skills
interzoid.com Live x402
Generate an AI-powered similarity key for individual/person name matching. Handles variations like 'Bob Smith', 'Robert Smith', 'Smith, Robert J.' producing the same key for matching and deduplication. (15 paid endpoint…
x402 paid API · 12 endpoints
invoket.com Live x402
Before your agent advises on EU compliance or cites EU law: check an act or article is in force at a given date, by CELEX or ELI identifier — consolidated text, status, validity dates and the staggered date it becomes A…
x402 paid API · 12 endpoints
ioswarm.io Live x402
Live quotes for up to 8 symbols — stocks, ETFs, crypto pairs (BTC-USD), FX — price, session change and currency, in the paid response. $0.01 per call, no account. (32 paid endpoints on ioswarm.io.)
x402 paid API · 12 endpoints
iot.halowerk.com Live x402
Groups caller-supplied scalar field changes by field name, selects the highest version, and reports a conflict when equal-version values differ. It does not connect to a twin platform, merge nested documents or resolve…
x402 paid API · 10 endpoints
ip-geo-api-production.up.railway.app Live x402
Geolocate an IPv4/IPv6 address: country, region, city, postcode, lat/lng, timezone, ISP, org, ASN, and a datacenter heuristic. (4 paid endpoints on ip-geo-api-production.up.railway.app.)
x402 paid API · 4 endpoints
ip402.xyz Live x402
Paid IP intelligence endpoint returning normalized geolocation and ASN data for a single IPv4 or IPv6 address.
x402 paid API · 1 endpoint
ip.halowerk.com Live x402
Inspect one IP address for network ownership, location and abuse signals. (2 paid endpoints on ip.halowerk.com.)
x402 paid API · 2 endpoints
iposignal-dashboard-372lo399x-waltermelonlangs-projects.vercel.app Live x402
Full IPO company profile with AI research, valuation analysis, and deal terms
x402 paid API · 1 endpoint
iposignal.xyz Live x402
IPOSignal Sentiment Score — proprietary daily signal measuring investor appetite for new listings (5 paid endpoints on iposignal.xyz.)
x402 paid API · 5 endpoints
isocast.dev Live x402
Latest observed weather signal for one city — a single-signal SPOT snapshot (like a market-data quote). Flat $0.01, payable by a STOCK x402 client (no binding nonce). Never returns history or more than one signal. Uncha…
x402 paid API · 1 endpoint
israel-counterparty-intelligence.vercel.app Live x402
Monitor recent official Israeli company-registry changes for an exact nine-digit company number. Returns filing and status-change events newest first, with dates, deterministic categories, source URLs, and checked_at. U…
x402 paid API · 1 endpoint
itsgloria.ai Live x402
Get a 24-hour news summary for a specific token/ticker, combining internal news data with web search results. Returns decision-grade bullet points for fund managers and trading agents. (5 paid endpoints on api.itsgloria…
x402 paid API · 5 endpoints
japan-business-day-api.matchan962.workers.dev Live x402
Japanese traditional calendar for a date: rokuyo (taian/butsumetsu... lucky days used for weddings, funerals, contracts), Japanese era (Reiwa) date, old lunisolar calendar date incl. leap months, 24 solar terms (sekki)…
x402 paid API · 10 endpoints
jarvisclaw.ai Live x402
Returns recent cryptocurrency headline metadata and sentiment. (18 paid endpoints on api.jarvisclaw.ai.)
x402 paid API · 12 endpoints
jmt-x402-proxy.jmthomasofficial.workers.dev Live x402
Raw RDAP registration record for a domain, returned as structured JSON. (6 paid endpoints on jmt-x402-proxy.jmthomasofficial.workers.dev.)
x402 paid API · 6 endpoints
jmthomasofficial.com Live x402
Company intelligence lookup: resolve a US-listed company ticker through the SEC EDGAR company ticker dataset. Returns CIK, ticker, and registrant name for company research, SEC filing discovery, and equity due diligence.
x402 paid API · 1 endpoint

Related capabilities

On-chain data Trading & markets AI models & inference Agent infrastructure Maps & travel Research Security & trust Social media

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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