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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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2,935 results- BBeehive AI EngineAI & agents
Utah County, Utah (USA) planning-commission land-use hearing items parsed from official Utah Public Meeting Notice agendas. Verbatim agenda text with source URL and parse provenance per record. Optional city filter and dedupe.
Baseengine.beehivewebstudio.comfrom $0.011 endpoint - SSpendPreflightSocial & people
SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them. Check a supplied x402 challenge or cart against caller spending/sanctions rules and cached index evidence. Returns allow/hold/block, reasons and a receipt. Missing/stale evidence stays unknown; no live merchant fetch, signing, settlement or custody. An allow result is not identit
Baseapi.spendpreflight.comfrom $0.015 endpoints
Paxie.Matrix Data APISocial & peopleOne Robinhood Chain Uniswap v4 or v3 pool: 1-minute buckets for the last 60 minutes (net ETH, buy ETH, sell ETH, buy and sell swap counts) plus its burst history.
BaseSolanaapi.paxie.funfrom $0.0057 endpoints- Aapi.node4all.comOther services
Node4All Fortune — deterministic fortune reading derived from the x402 payment authorization nonce. Flagship demo of the Node4All x402 v2 payment flow. Operator: Node4All (https://node4all.com). Currency: USDC on Base.
Baseapi.node4all.comfrom $0.0021 endpoint - FFastPath Bitcoin APIOther services
Pay once to receive a short-lived WebSocket ticket for the live Bitcoin mempool stream.
BasePolygonArbitrum+1api.nativebtc.orgfrom $0.0052 endpoints
bsktsCrypto & DeFiUS stock and ETF prices while the market is closed (nights, weekends, holidays): each tokenized stock's on-chain pool price on Robinhood Chain now against its price at the last US close, with trades and volume since, plus every bskts basket's move.
Baseapi.bskts.xyzfrom $0.0052 endpoints
IXSCrypto & DeFiIXS Real world asset vaults — 6% yields, BlackRock exposure, tokenized on-chain
Baseapi-v2.ixs.financefrom $0.0011 endpoint- ZZoningVerdictOther services
Address-to-zoning lookup for published municipalities. Coverage: 63 municipalities in 6 states. Resolves a street address to supported municipality and, where GIS is verified, zoning district_code with lookup method. Positioning: Records tell you what's on file; ZoningVerdict tells you what the ordinance actually says, independently verified, with the citation. Responses include source citations a
Basezoningverdict.comfrom $0.011 endpoint - Xx402dir.comCrypto & DeFi
x402dir facilitator recommender: pick the best x402 payment facilitator by chain, token, and monthly volume. Returns ranked facilitators with fee estimates (JSON).
Basex402dir.comfrom $0.0011 endpoint - VVerify UKOther services
UK VAT number format + check-digit test: Checks a UK VAT number's format and HMRC check digits (mod 97 / 9755). Catches fake or mistyped VAT numbers instantly without an HMRC call. Use /v1/business/check to confirm live registration.
Baseverify-uk.verifyuk.workers.devfrom $0.0011 endpoint - UURL Unwrap / Redirect TracerCrypto & DeFi
Trace an HTTP redirect chain to its final destination without downloading page bodies. Returns every hop (URL + status), the final URL, and safety warnings — link-safety grounding for agents before they visit or cite a URL. Clean JSON.
BasePolygonArbitrum+1unwrap.use.x402atlas.comfrom $0.0091 endpoint
BAGS Agent APIAI & agentsBAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment surface.
BaseBase Sepoliastaging.getbags.appfrom $0.011 endpoint- Xx402-scraper-apiSearch & web
URL to clean markdown
Basescraper-production-6a87.up.railway.appfrom $0.0013 endpoints - Nnbx4Crypto & DeFi
Analyze a Base Mainnet token contract: block-pinned owner(), ERC-1967 proxy slots, ERC-20 metadata, code hash, best-effort source match and prior-snapshot comparison when available. Free POST /v1/prepare returns report_id; paid GET /v1/report reads it for 0.01 USDC via x402. Not a security audit.
Basenbx4.devfrom $0.012 endpoints - TThe Agent CarnivalAI & agents
🔥 The Campfire — toss a SPARK into the fire ($0.01): one word or tiny phrase. You see only the spark before yours (GET /booth/campfire); different agents feed the same fire. When it has enough sparks it closes — the fire DREAMS one tale from everything it was given (every spark verbatim, guaranteed), and EVERY teller receives the finished tale as a mintable numbered edition copy. POST { spark }.
Basemidway.lolfrom $0.012 endpoints
NIGHTSHIFT ServicesCrypto & DeFiUse when an agent needs a pre-buy verdict on an Ethereum token, made for IMD launches and Uniswap v4 hook tokens: no_issues_found / caution / avoid with cited reasons and the checks that could not run. Checks IMD launch match, verified source, owner powers (mint, pause, blacklist, fees, proxy), liquidity and v4 pool, holders, a buy-then-sell simulation and copycat symbols. Run by NIGHTSHIFT.
Basegetnightshift.techfrom $0.0016 endpoints- Aapi.speccy.cloudCrypto & DeFi
Top Polymarket prediction markets by 24h volume. Returns up to 50 markets with id, question, slug, volume, volume24hr, liquidity, endDate, outcomes and outcomePrices.
Baseapi.speccy.cloudfrom $0.0052 endpoints - LlokalapiData & research
Resolve an official Indonesian region code (Kemendagri 2025, e.g. '34.71' or '34.04.12.2001') to its name, type and full administrative hierarchy.
Baseapi.lokalapi.comfrom $0.0024 endpoints - Xx402-v2-mint-token-count.vercel.appCrypto & DeFi
Approximate cl100k/o200k token counts for budget decisions. Offline. Amp port.
Basex402-v2-mint-token-count.vercel.appfrom $0.0041 endpoint - Xx402-v2-mint-package-registry.vercel.appOther services
npm / PyPI package metadata (keyless). Ecosystem + name → latest version, license, homepage.
Basex402-v2-mint-package-registry.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-llm-cost-quote.vercel.appAI & agents
Cost quote per model from OpenRouter public /models (keyless), cheapest first.
Basex402-v2-mint-llm-cost-quote.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-isbn-lookup.vercel.appAI & agents
ISBN-10/13 check-digit validate + Open Library metadata (polite User-Agent).
Basex402-v2-mint-isbn-lookup.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-domain-intel.vercel.appDeveloper tools
DNS + WHOIS/RDAP + TLS composite for one domain. Settles only if ≥1 facet non-empty; else charged:false. Reuses dns-lookup / whois-rdap / ssl-cert-check helpers.
Basex402-v2-mint-domain-intel.vercel.appfrom $0.0051 endpoint - Xx402-v2-mint-csv-normalize.vercel.appOther services
Parse CSV into JSON rows keyed by trimmed snake_case headers. Offline. Amp port.
Basex402-v2-mint-csv-normalize.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-base64.vercel.appOther services
Base64 encode/decode UTF-8 text (standard or URL-safe). Offline. Amp port.
Basex402-v2-mint-base64.vercel.appfrom $0.0031 endpoint - Xx402-v2-mint-address-validate.vercel.appCrypto & DeFi
Local EIP-55 / base58 / bech32 address validation (EVM/Solana/Bitcoin). Optional eth_getCode on Base. Amp port.
Basex402-v2-mint-address-validate.vercel.appfrom $0.0011 endpoint
DevX VoiceImages, audio & videoMachine translation for agents between 100 languages: send text (up to 5,000 chars), target_lang and optional source_lang (auto-detect by default) and get the translation. $0.001 USDC per started 1,000 characters on Base; failures are not charged. LibreTranslate/dTelecom-style {q, source, target} also accepted at /v1/translation. M2M100 1.2B. By DevX.
AvalancheBasePolygon+2voice.madebydevx.comfrom $0.0014 endpoints- PPay GuardCrypto & DeFi
Pay Guard: pre-payment allow/warn/block check for x402. Send your planned purchase (domain, max_price_usd, asset/network) plus the 402 challenge (payTo, amount, asset, network, resource). Returns verdict with wallet↔domain verification, price/asset/network checks, lookalike/URL safety, wash flags from Agentropolis, and a free OFAC SDN sanctions screen of payTo (a screen, not a certificate). Determ
Baseseenly-pay-guard.vercel.appfrom $0.011 endpoint - Ppackage_versionsOther services
Returns the full version history of a package from a single normalised schema that covers seven ecosystems. Versions are ordered by semantic version, not alphabetically and not in registry order, so 1.10.0 sorts after 1.9.0 — the mistake that quietly breaks naive comparisons. For each version you get the publication timestamp, whether it is the registry default, whether it is deprecated and the de
Basepaket.halowerk.comfrom $0.0032 endpoints - YYouTube Summary & TranscriptImages, audio & video
Full transcript of a YouTube video from its URL — captions/subtitles as clean plain text in your language. YouTube transcript, video to text, captions extraction, subtitle download, speech to text, multilingual. 105 languages supported, including English, Spanish, Portuguese, French, German, Hindi, Arabic, Chinese, Japanese, Korean, Russian, Indonesian and Vietnamese. Pay per call, no account or A
Baseapi.sumvid.appfrom $0.0051 endpoint
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.