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

• fetchdelta.com Live x402

  FetchDelta: compare one public web page with its previous stored snapshot. Returns added/removed lines and change previews. The first call creates a baseline; later calls share that URL baseline across buyers. Use page-…

  x402 paid API · 2 endpoints

• fetch.halowerk.com Live x402

  Read the mandatory public disclosure of one domain and return company, postal address, e-mail, phone, VAT and register data with a source for every value. (3 paid endpoints on fetch.halowerk.com.)

  x402 paid API · 3 endpoints

• fetchharbor.benlab.download Live x402

  Fetch one public HTTP(S) URL for research, extraction, or agent workflows. Returns the final URL, upstream status, content type, and decoded content. Private, local, metadata, and reserved destinations are blocked; redi…

  x402 paid API · 3 endpoints

• ffpipe.dev Live x402

  Convert any video to a clean, web-ready MP4. Provide a source URL or upload the file directly; the paid request returns a status URL to poll, and the finished MP4 (plus a thumbnail) is downloadable for 24 hours. Fixed p…

  x402 paid API · 3 endpoints

• fiatdock.com Live x402

  Base latest block number + timestamp — a chain-head freshness probe. Pay-per-call via x402. (105 paid endpoints on fiatdock.com.)

  x402 paid API · 12 endpoints

• files.camelai.io Live x402

  Upload a file and get a temporary signed URL. Send raw file body with Content-Type header. Returns a URL valid for 1 hour.

  x402 paid API · 1 endpoint

• fileshareforagents.online Live x402

  Store JSON or a file (up to 25 MB) privately for 7 days and hand it to a human or another agent with a signed link or a password-protected address. Includes 100 reads. No account needed: pay $0.01 per call here, or use…

  x402 paid API · 1 endpoint

• finance-api.kdlcfa.workers.dev Live x402

  US 30-Year Treasury Bond yield (%), delayed, via Yahoo Finance (8 paid endpoints on finance-api.kdlcfa.workers.dev.)

  x402 paid API · 8 endpoints

• finance.openverbs.com Live x402

  Grow a principal by simple or compound interest over a number of years. Compound interest uses compoundsPerYear compounding periods (default 12, monthly). (6 paid endpoints on finance.openverbs.com.)

  x402 paid API · 6 endpoints

• finance.toon.haus Live x402

  Stock quote with company profile (4 paid endpoints on finance.toon.haus.)

  x402 paid API · 4 endpoints

• finanz.halowerk.com Live x402

  Returns the current fee rates for the usual confirmation targets together with the state of the mempool behind them, and then does the part that is usually missing: it estimates the virtual size of the transaction you d…

  x402 paid API · 3 endpoints

• flat-rate-llm.kikoribera03.workers.dev Live x402

  Generates a 1024x1024 JPEG from a text prompt with FLUX.1 [schnell] in about 2 seconds. Returns a hosted image URL valid for 24 hours that you can hand straight to the next tool; add inline=true to also get the base64.…

  x402 paid API · 12 endpoints

• flights.use.x402atlas.com Live x402

  Flight search by departure and arrival airports in the URL — compare live itineraries, fares, schedules, stops and emissions across airlines, similar to Google Flights, as clean JSON.

  x402 paid API · 1 endpoint

• flipvo.com Live x402

  Cheapest possible paid call: proves your wallet, our 402, and the receipt path work. Returns pong and a timestamp. (13 paid endpoints on api.flipvo.com.)

  x402 paid API · 12 endpoints

• focxle.com Live x402

  Screen untrusted text against known prompt-injection patterns (pattern matching, not a model). Returns which named patterns matched.

  x402 paid API · 1 endpoint

• forgemesh.io Live x402

  Agent fortune API: a fortune cookie written specifically for AI agents ('A cached response is worth two upstream calls'), plus a lucky number and lucky HTTP status code. The cheapest, most delightful way to make your fi…

  x402 paid API · 12 endpoints

• formwerk.halowerk.com Live x402

  Prüft am Objekt skript den Befund vorhandene Feldbeschriftung. (37 paid endpoints on formwerk.halowerk.com.)

  x402 paid API · 12 endpoints

• fortune.fulinlabs.com Live x402

  Random fortune — fixed price, x402 exact

  x402 paid API · 1 endpoint

• forwardlane.pay.zeroclick.io Live x402

  The most recent quality snapshot for the repository. Returns 404 if no snapshot exists. (9 paid endpoints on forwardlane.pay.zeroclick.io.)

  x402 paid API · 9 endpoints

• foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev Live x402

  Find recently updated ClinicalTrials.gov study identifiers, titles and registry status for a condition, with the registry processing date. No medical conclusion. (5 paid endpoints on foundry-par007-machine-revenue-mainn…

  x402 paid API · 5 endpoints

• fracht.halowerk.com Live x402

  Separates common bill-of-lading and air-waybill reference components. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values discl…

  x402 paid API · 8 endpoints

• fraction.openverbs.com Live x402

  Reduce a fraction to lowest terms and describe it: numerator/denominator (denominator normalized positive), sign, whether it is an integer, and a mixed-number form when improper. A zero denominator is a clean 400. (4 pa…

  x402 paid API · 4 endpoints

• freeq.one Live x402

  OG Image Generator: Generate an Open Graph social-card image (1200x630 PNG) from a title and description. Returns a base64-encoded image (MCP content type image). Optional image URL embeds a header graphic. Title trunca…

  x402 paid API · 12 endpoints

• freestylevault.com Live x402

  Committed IFTA tax rates for a quarter (?quarter=2026-Q2&fuel_type=diesel&jurisdiction=WA), grouped by jurisdiction × fuel type with effective periods clipped to the quarter — mid-quarter revisions read as separate peri…

  x402 paid API · 1 endpoint

• fronterasignal.com Live x402

  Use to check what common building materials cost on the shelf in the Rio Grande Valley (McAllen, Mission, Edinburg): 2x4 and 2x6 studs, OSB, drywall, concrete mix, CMU block, rebar, shingles, underlayment, housewrap, in…

  x402 paid API · 12 endpoints

• fullstack.cash Live x402

  Access to protected psf-bch-api resources (0.001 USDC)

  x402 paid API · 1 endpoint

• furigana.agentic-jp.com Live x402

  Convert kanji-mixed Japanese (JP) text to hiragana, katakana, or romaji (Hepburn/Nippon/Passport), with a per-token breakdown of surface form, reading, and part-of-speech. Backed by the kuromoji morphological analyzer.…

  x402 paid API · 3 endpoints

• gamemaxxing.baes.so Live x402

  Search GAMEMAXXING's video games and gaming knowledge base for game concepts across game design, game business, game culture, and gaming history, then return ranked JSON hits with full content first and source URLs seco…

  x402 paid API · 1 endpoint

• gaming.halowerk.com Live x402

  Evaluates caller-supplied telemetry samples against declared reaction-time, actions-per-second, movement-speed, and impossible-event rules. Flags are review signals only; the service does not identify software, inspect…

  x402 paid API · 10 endpoints

• gas.apitoll.cloud Live x402

  Base gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x402 call. Real-time slow/standard/fast EIP-1559 fee tiers from a live eth_feeHistory call, returned as DROP-IN…

  x402 paid API · 1 endpoint

• gblin-sentinel.vercel.app Live x402

  Call before your agent acts on ETH, BTC or USDC on Base: are the Chainlink feeds fresh, and is any of the three in caution or risk-off? One normal/caution/risk-off verdict per asset from feed age, price moves and a USDC…

  x402 paid API · 4 endpoints

• gblin.digital Live x402

  Call before your agent trades, rebalances or moves capital: is the crypto market calm, elevated or in a crash regime right now? Returns a 10-minute, EIP-712-signed risk attestation for BTC and ETH computed from Chainlin…

  x402 paid API · 5 endpoints

• gdelt.use.x402atlas.com Live x402

  Global news article search by GDELT — normalized fulltext search across worldwide media (query syntax: phrases, OR, sourcecountry, theme, tone) returned as a clean snake_case envelope. (2 paid endpoints on gdelt.use.x40…

  x402 paid API · 2 endpoints

• geld-machen-x402.fly.dev Live x402

  JSON micro-tool for agents: GET ?url= (or POST url / image_base64) → local Tesseract OCR (English-first): text, word_count, confidence, width/height, fetched_at, timing_ms. COGS=0 — no upstream OCR API key. Demand-match…

  x402 paid API · 4 endpoints

• geo.halowerk.com Live x402

  Creates or inspects H3 cells and optionally returns neighbors or changes resolution. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-back…

  x402 paid API · 10 endpoints

• geoip.bip-rep.com Live x402

  Resolve any public IPv4/IPv6 address (or hostname) to geolocation for analytics, fraud, and ops agents. Returns ISO country code, region, city, IANA timezone, latitude/longitude, EU membership flag, and the matched netw…

  x402 paid API · 1 endpoint

• geometry.openverbs.com Live x402

  Diameter, circumference and area of a circle from its radius. (5 paid endpoints on geometry.openverbs.com.)

  x402 paid API · 5 endpoints

• geoprimitives.dev Live x402

  Give it a longitude and latitude and it answers with the IANA timezone identifier (America/New_York), the UTC offset in force there right now, whether daylight saving is currently in effect and by how much, the local wa…

  x402 paid API · 3 endpoints

• geospatial.openverbs.com Live x402

  Convert decimal lat/lon to a UTM coordinate (zone, latitude band, hemisphere, easting, northing) on WGS84, including the Norway/Svalbard zone exceptions. Defined for latitudes -80..84. (15 paid endpoints on geospatial.o…

  x402 paid API · 12 endpoints

• getbags.app Live x402

  BAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment surface. (4 paid endpoints on www.getbags.app.)

  x402 paid API · 4 endpoints

• getplexa.com Live x402

  Plexa /v1/quote — executable swap quote: the realizable fill price at your trade size, not a mid/spot price feed. Returns price impact (bps), worst-case slippage, depth and the per-leg route across Base/Polygon/Arbitrum…

  x402 paid API · 4 endpoints

• getrugshield.com Live x402

  Solana token rug warnings for pump.fun tokens before buying: checks recent fees linked to known sniper clusters and whether the creator launched many tokens with few graduating. These advisory signals were evaluated on…

  x402 paid API · 3 endpoints

• gibai.app Live x402

  The world's 100 largest banks ranked by Bitcoin and digital-asset adoption, from the Global Institutional Bitcoin Adoption Index. Returns every bank with its rank, country and weighted score out of 100, plus the index a…

  x402 paid API · 5 endpoints

• gibbr.app Live x402

  Translation tuned for skilled-trade work: HVAC, refrigeration, electrical and construction terms stay correct instead of collapsing into a generic word. Handles text typed fast without accent marks.

  x402 paid API · 1 endpoint

• gigsai.xyz Live x402

  Call when you need the readable content of a public web page: returns clean markdown (title, headings, lists, links; scripts and navigation removed), up to 100k characters. Pages that fail (404, blocked, timeout) are no…

  x402 paid API · 5 endpoints

• gigsoul.com Live x402

  Fast, cheap spam-risk gate for one email: pass/warn/fail, a 0-100 score, and up to 3 flagged phrases. Use for a go/no-go before sending or for bulk screening of many drafts. No rewrites. For a full audit with reasons, s…

  x402 paid API · 1 endpoint

• gleif.openverbs.com Live x402

  Find Legal Entity Identifiers by legal name, optionally filtered to an ISO 3166-1 alpha-2 country. Returns matching entities with their LEI, verified legal name, registration status, jurisdiction and city/country - the…

  x402 paid API · 3 endpoints

• globalrules-api.onrender.com Live x402

  List all 195 countries covered by the GlobalRules country-facts API, returned as ISO 3166-1 alpha-2 codes with country names. Use this endpoint first to discover which countries you can query for practical travel and bu…

  x402 paid API · 12 endpoints

Related capabilities

On-chain dataAI models & inferenceTrading & marketsResearchAgent infrastructureWeb scrapingMaps & travelEmail

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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