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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- Xx402factory.aiSocial & people
Base X profile mini-endpoint. Fetches a full X profile and the 10 most recent tweets for a given handle, returning the raw profile data plus a trimmed tweet list with key engagement metrics and media. Cost: 0.001 USDC per request.
SolanaBasex402factory.aifrom $0.00132 endpoints - CCrypto Wallet Sanctions (OFAC)Crypto & DeFi
Crypto wallet sanctions check (OFAC): is this blockchain address on the US Treasury OFAC sanctions lists? Exact match against all 1,000+ digital currency addresses OFAC publishes on SDN and Consolidated entries (Bitcoin, Tron, Ethereum and EVM chains, USDT, Litecoin, Monero and more), returning the listing's program and entry ID. Use before sending or accepting a crypto payment. No tracing or risk
BasexrplBase Sepolia+1api.stablecoingateways.comfrom $0.00114 endpoints - AAgent Tools UKImages, audio & video
Check whether a website is up right now: HTTP status, response time in ms, full redirect chain, and the SSL certificate's validity, issuer and days until expiry. Use when monitoring a site, diagnosing a broken link, or warning that a certificate is about to expire. A site that is down still returns 200 with up:false and the error. Errors: 400 bad or private URL.
Baseagent-tools-production-e6aa.up.railway.appfrom $0.0019 endpoints - Ggamemaxxing.baes.soImages, audio & video
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 second.
Basegamemaxxing.baes.sofrom $0.0011 endpoint - Bbuero.halowerk.comDeveloper tools
Import report: count rejection reasons independently of DNS latency. Reuses the existing email-list-clean motor. No SMTP probes or mailbox existence/catch-all proof. Local part case, plus and dots are never folded. Up to500 source rows;65s engine bound,70s article bound; one inflight native mail process. Price0.001 USDC plus existing motor quote, minimum0.004; supplied rows including rejected/dupl
Basebuero.halowerk.comfrom $0.00227 endpoints
BarkerCrypto & DeFiQuery real-time stablecoin supply yield pools from Barker's index of 500+ DeFi protocols. Returns ranked rows with protocol_name, chain_name, asset_symbol, supply_apy_total (decimal — multiply by 100 for %), and supply_tvl (USD). Use for questions like 'best stablecoin yield', 'where to earn on USDC', 'compare lending rates', '稳定币利率'.
X LayerBaseEthereum+2mcp.barker.moneyfrom $0.0013 endpoints- HhyperextendCrypto & DeFi
The most-recent N OHLCV candles (≤5000), in Hyperliquid's candleSnapshot shape. Same per-row pricing as the windowed read ($0.00001 base for main/spot, $0.000025 premium for HIP-3/HIP-4); candles lag ~2 days.
Basehyperliquidapi.hyperextend.xyzfrom $0.00111 endpoints - TToll402Search & web
Offline validator for a Danish CVR-nummer (8-digit business registration number issued by the Danish Business Authority). Normalizes input to digits only, checks length and computes a modulus-11 checksum using weights 2,7,6,5,4,3,2 on the first 7 digits compared against the 8th check digit. Result is flagged as best-effort since some legacy CVR numbers do not conform to the checksum rule.
Basetoll402.devfrom $0.00144 endpoints
api.remix.liveCrypto & DeFiComplete AI-powered smart contract security audit - analyzes code against checklist and provides detailed findings with severity levels. Returns immediately (202 Accepted) with a polling URL. Poll GET {jobStatusUrl} every 5-10 seconds until status is 'completed'. Estimated time: ~120 seconds. PRICING (based on model): DeepSeek: $0.15 USDC, Sonnet: $0.25 USDC, Fable: $0.70 USDC. Payment must match
Baseapi.remix.livefrom $0.013 endpoints
AveDaris Agent UtilitiesCrypto & DeFiNormalize an email address for matching: send an address and get its local part, domain and a lowercase comparison form. Syntax only; it does not verify the mailbox. Pair with email-auth-check for the domain. $0.001 USDC per call on Base.
Baseapi.avedaris.comfrom $0.000540 endpoints- Cchain.openverbs.comImages, audio & video
Call a read-only (view/pure) function on any deployed contract via eth_call and get the decoded result. Give the contract address and a human-readable signature (e.g. 'balanceOf(address) view returns (uint256)') plus args; include return types to decode outputs, else raw hex is returned. Reads allowances, oracle prices and vault/DAO state. Read-only, no signing. Ethereum, Base, Arbitrum, Optimism,
Basechain.openverbs.comfrom $0.00127 endpoints - MMaxwell x402Crypto & DeFi
OFAC SDN screen by name, alias (aka/fka/nka), or UID against the Treasury SDN list joined with alt.csv and add.csv. A clean no-match is a valid screening result and is charged.
BaseSolanaapi.maxwellinternational.aifrom $0.00214 endpoints
EckariMarkets & financeTurn a company-name fragment or stock ticker into the SEC EDGAR identifiers. Searches the SEC listed-security index and returns ranked matches with the 10-digit CIK, ticker, registered name and listing exchange. Deterministic ranking: ticker exact, then name exact, then name prefix, then name contains. Use it for names — the other company.us.* capabilities take a ticker directly. Use when: Which S
Baseapi.eckari.comfrom $0.00111 endpoints- GGlobalRulesCrypto & DeFi
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 business facts such as VAT rates, public holidays, tipping customs, power plugs, emergency numbers and visa rules (58 topics per country). Designed for AI agents, travel planners and
Baseglobalrules-api.onrender.comfrom $0.00557 endpoints
ToolrailMarkets & financeCurrent VAT rates for supported European countries (EU-27 + UK, CH, NO...). Standard, reduced and super-reduced rates, provided through the third-party vatnode dataset; verify applicability for your transaction. Use when pricing, invoicing or checking tax for a customer in Europe and you need that country's VAT rate.
BaseSolanatoolrail.devfrom $0.00230 endpoints
TariffMonkeeSocial & peopleHealth and payment-path check. Returns server time and confirms the x402 payment settled. The cheapest endpoint in the catalog at $0.001, intended for testing a client's payment flow.
BaseSolanatariffmonkee.comfrom $0.00139 endpoints- Pproxy.suverse.ioMarkets & finance
Real-time forex exchange rates for 170+ currencies with USD base. Daily updates from ExchangeRate-API open data. AI agent international payment calculator, cross-border FX, finance dashboard, currency converter API, pay-per-call USDC.
BaseSolanacosmosproxy.suverse.iofrom $0.00121 endpoints - Aagentdata-api.sander-van-aard.workers.devCrypto & DeFi
LLM chat completion per call — no account, no API key, no token math. Three flat-priced tiers: fast $0.002 (DeepSeek v4 Flash), smart $0.02 (GPT-5.4 mini), reasoning $0.03 (DeepSeek v4 Pro). Send OpenAI-style messages, get the assistant reply with finish_reason and token usage. Input capped per tier (16k-32k chars); the 402 quotes the exact tier price up front. Model or source unavailable means a
Baseagentdata-api.sander-van-aard.workers.devfrom $0.00236 endpoints - Vvoice.forgemesh.ioImages, audio & video
Text-to-speech synthesis in 1 of 10 standard voices (5 male M1-M5, 5 female F1-F5) across 31 languages, up to 500 characters, returned as inline WAV audio. Use it to: give an agent a spoken reply, read an alert aloud, narrate a short UI prompt, add voice to a chatbot response, speak a confirmation message. Cheapest tier. USDC on Base via x402, no API key, no signup.
Basevoice.forgemesh.iofrom $0.00510 endpoints - Sscreenshot-api-production-fe7e.up.railway.appImages, audio & video
Capture a full-page (scrolled) PNG screenshot of an http(s) URL; returns a JSON envelope with the PNG base64-encoded under image_base64, plus final_url, title, viewport, and size.
Basescreenshot-api-production-fe7e.up.railway.appfrom $0.0024 endpoints - Kkleros-ipfs-gateway.fly.devOther services
Pin a file to IPFS
Basekleros-ipfs-gateway.fly.devfrom $0.011 endpoint - Iiotwerk_device_authDeveloper tools
Canonicalizes device_id, nonce and message, computes an HMAC-SHA256 tag with caller-supplied ephemeral key material, and optionally compares a claimed tag in constant time. It does not provision devices, store keys or replace asymmetric device identity; do not submit long-lived production secrets.
Baseiot.halowerk.comfrom $0.00210 endpoints
CarsonBot402 AskOther servicesx402 debugging/troubleshooting Q&A: Ask any question, get a cited answer. Whether you need HTTP 402 Payment Required help, facilitator verify & settle (CDP @coinbase/cdp-sdk), Bazaar discovery metadata & listing, protocol documentation, Next.js paid routes, or planning, building, and integrating x402 servers: @x402/core @x402/next @x402/express @x402/hono @x402/fastify @x402/fetch @x402/axios @x40
BaseSolanacarsonbot402.devfrom $0.011 endpoint
ToolsmithImages, audio & videoRecent news headlines for any company, topic or query: deduplicated titles with source, link and publish date from a broad news index. Window configurable 1-30 days. JSON response. $0.01 USDC per call, pay via x402, no API key.
Basetoolcall.clickfrom $0.00219 endpoints- Dd21 crypto_newsSocial & people
Crypto News ($0.001 -- matches the category-leading incumbent's price exactly): fixed, no-required-params crypto headline feed -- a drop-in-shaped alternative to the category leader (GET, headlines[] with title/url/source/publishedAt; also mirrors its {status, data:{headlines[] with rank/whyItMatters/match, report}, meta} nesting field-for-field, as an additive alias). Built on this origin's own n
BaseSolanadraconic21-x402-api.onrender.comfrom $0.00142 endpoints
Lordevo DNS lookupImages, audio & videoDNS lookup (A, AAAA, CNAME, MX, TXT, NS, SOA, CAA): Live DNS lookup for any public host name: one record type or ALL (A, AAAA, CNAME, MX, TXT, NS, SOA, CAA) in one call, with NXDOMAIN detection and a flag for private addresses. Cached 2 min. ~0.1-1 s.
Baseshop.lordevo.comfrom $0.00250 endpoints- TTBS Weather & Climate APIImages, audio & video
Complete weather bundle in one call: current conditions (temperature, feels-like, humidity, wind speed/direction/gusts, pressure, cloud cover, precipitation, UV, day/night) plus 24-hour hourly and 7-day daily forecast, air quality (AQI, PM2.5, PM10, ozone), solar radiation, and severe-weather alerts. Query by city name or lat/lon. Times in the location local timezone. Most complete weather data pe
Basex402.tbs-digital.comfrom $0.00123 endpoints - AApiToll SEC FilingsMarkets & finance
Latest SEC EDGAR filings for any US-listed company by stock ticker or CIK: 10-K annual reports, 10-Q quarterly reports, and 8-K material events. Resolves ticker to CIK via SEC's official index and returns the parsed filing (company, form type, dated items). Sourced live from data.sec.gov.
BaseSolanaedgar.apitoll.cloudfrom $0.0034 endpoints - Xx402 Data APICrypto & DeFi
What a wallet spent on x402 APIs on Base in the last days, read from the chain: total, per seller (named by the Bazaar listings that pay to it), per day, and the recent payments, with other USDC transfers counted apart. For a wallet with very many payments, complete is false and from says how far back it was read.
Basedata.kagurazaka.devfrom $0.00212 endpoints - Kkino402Images, audio & video
Seedance 1.5 pro: 12s at 720p
BaseSolanakino402.comfrom $0.00510 endpoints
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.