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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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2,776 results- Aagentshield.liveAI & agents
Call when an agent has an IBAN and needs the checksum, the expected length, and the country format. Does not confirm the account exists.
Baseagentshield.livefrom $0.00166 endpoints
AiSpace VeniceImages, audio & videoAsync text-to-video and image-to-video generation on Venice (WAN 3.0, Seedance 2.5, HappyHorse, and more), paid per request in USDC on Base via x402, no API key. Model ids via GET /api/v1/models?type=video. Lifecycle: quote, queue, retrieve, complete (see related routes).
BaseSolanax402.aispace.botfrom $0.0114 endpoints- FFactlineSocial & people
Crypto wallet sanctions screening (OFAC SDN addresses). Use before sending crypto to an address, or when asked if a wallet is sanctioned: checks Bitcoin, Ethereum/EVM, Tron, USDT, Litecoin, Monero and other addresses against the wallets on the US OFAC SDN list, refreshed weekly. Returns sanctioned true/false, currency, listed entity and programme.
BaseSolanafactline.devfrom $0.00140 endpoints
API DirectSocial & peopleSearch for tweets by keyword.
Basex402.apidirect.iofrom $0.003142 endpoints- IInterzoid Data APIsSocial & people
Person name matching and deduplication: generates an AI-powered similarity key for an individual's full name, so variations such as 'Bob Smith', 'Robert Smith', and 'Smith, Robert J.' produce the same key. Group records on the key to find duplicate contacts and customers across CRM, marketing, and customer datasets.
Baseapi.interzoid.comfrom $0.0152 endpoints - DDefiLlama DeFi TVL & YieldsCrypto & DeFi
Options volumes for one chain by DefiLlama — options-protocol volume on a single chain.
BasePolygonArbitrum+1defillama.use.x402atlas.comfrom $0.00530 endpoints
x402stockCrypto & DeFiThe total US public debt outstanding to the penny — the headline national-debt figure — split into debt held by the public and intragovernmental holdings, with the latest value, prior business day, day-over-day change, and recent history. No ticker needed. Updates each business day. Sourced from the US Treasury (FiscalData). Pass `?limit=` for more history (default 30, max 250). From x402stock
Basezeroclickagents.x402stock.xyzfrom $0.0197 endpoints- Aapi.neurodynamic.techImages, audio & video
Introductory pricing. Catalogue narration: 0.005 USDC on Base, up to 1,000 characters, MP3. Seven English voices. No account, reference upload or human approval. Read https://api.neurodynamic.tech/narration. Authorisation verified before work; settlement after successful audio. Retry identical body and proof for 12 hours without a second charge. Generated audio may be reviewed privately by the ope
Baseapi.neurodynamic.techfrom $0.0051 endpoint
Blackwood State News HeadlinesImages, audio & videoUse when you need historical exchange rates, a historical FX rate series, forex history or a currency trend. Do not use for rates older than 90 days, live quotes or crypto (one ECB rate per business day). Returns JSON with historical exchange rates: 90 days of daily ECB euro reference rates (free at ecb.europa.eu) for up to 10 currencies, rebased to any base as cross rates, with min, max and perce
Basex402-gateway.blackwoodstate8.workers.devfrom $0.00232 endpoints- IIP address intelligenceImages, audio & video
Use when an agent must decide who an IP belongs to before blocking or trusting it: one IPv4 or IPv6 address against the two authoritative, keyless public sources - RDAP registry data (holder, country, date, abuse contact) via the ARIN-to-RIR chain, and the origin ASN from Team Cymru's DNS service. No city-level geolocation and no VPN/proxy detection: that needs a licensed database this route delib
BasePolygonArbitrumflat-rate-llm.kikoribera03.workers.devfrom $0.00558 endpoints - OOrdinalDeveloper tools
Format a non-negative integer as an ordinal — both the suffixed form (21st) and the ordinal words (twenty-first).
Basenumeral.openverbs.comfrom $0.0024 endpoints
TaifoonAI & agentsOpenAI-compatible chat completion on 71 models: name one in `model` (llama-3.1-8b-instruct, l3-8b-lunaris-v1, mistral-small-24b-instruct-2501, gemma-3-4b-it, qwen2.5-7b-instruct, gpt-oss-20b, phi-4, gemma-3-12b-it, qwen3.5-9b, gemma-3-27b-it, gpt-oss-120b and 59 more) and the 402 prices that model per request; served by DeepInfra, Venice AI, NEAR AI Cloud and Taifoon's own GPU (nvidia/NVIDIA-Nemot
BaseArbitrumEVM chain 5042+3coord.taifoon.devfrom $0.00112 endpoints- Ggeospatial.openverbs.comCrypto & DeFi
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.
Basegeospatial.openverbs.comfrom $0.00215 endpoints - HHALOWERK MedienImages, audio & video
Takes an audio or video file by URL or inline base64 and returns the transcript: the full text, every word with start and end time and its own confidence, the utterances and paragraphs the recogniser separated, and the detected language with its confidence where no language was specified.
Basemedien.halowerk.comfrom $0.001122 endpoints - EEdge Agents AICrypto & DeFi
Latest available Türkiye central government debt plus a comparable annual history from the World Bank World Development Indicators API, with source, lag and revision caveats. Purpose: Give an autonomous agent a normalized, directly sourced Türkiye central government debt series without forcing it to understand World Bank indicator codes or response shapes. 24-hour freshness target; missing evidenc
BasexrplSolana+2pay.edge-agents.aifrom $0.0184 endpoints - Aagentpaystore.comCrypto & DeFi
Live data feeds in one call: crypto prices, DeFi TVL, gas, equities, forex, earnings, RSI momentum, DEX signals and wallet risk.
BaseSolanaagentpaystore.comfrom $0.00117 endpoints - Mmcp-x402.onrender.comAI & agents
Paid (x402, USDC on Base). Map a model's raw probability to an empirically calibrated one using resolved outcomes on the ledger. Refuses wit
Basemcp-x402.onrender.comfrom $0.001120 endpoints - SScrapling x402 Data StoreCrypto & DeFi
Current price of BTC, ETH and about 155 other major coins, read from Chainlink on-chain price feeds: USD price, 1h/24h/7d/30d % change and 24h high/low. Market cap, volume, supply and all-time high are not included. Example: q=btc, q=ethereum, q=solana. Refreshed about every 30 min
BasePolygonArbitrum+1scraplingdata.xyzfrom $0.00156 endpoints
PreReasonCrypto & DeFiWhat changed since your last read: one page of PreReason's change events after a cursor. A briefing's state label, a tracked release, and, for the companies you name (?companies=, at most 200), newer figures, a situation turning on or filed news (?kinds= narrows it). Each event says what changed, when it happened, when PreReason knew it and where to fetch it, never a value. With no cursor it answe
BaseSolanaapi.prereason.comfrom $0.0139 endpoints
scry.solanahub.deCrypto & DeFiSolana priority fee estimates via x402: micro-lamports per compute unit for global, Jupiter, Raydium or custom account keys. Lookback 1-150 slots (default 50), 20-second cache. Network fee evidence, not a wallet check; no transaction inclusion guarantee.
SolanaBasescry.solanahub.defrom $0.0057 endpoints- Cchainverdict.xyzCrypto & DeFi
Latest Base block: number, timestamp and hash. The cheapest call on the service — useful as a liveness and connectivity check.
Basechainverdict.xyzfrom $0.00122 endpoints - Xx402.pokt-agent.comMarkets & finance
Fact-check numbers in Korean finance text: every checkable number (rates, KTB yields, FX, listed-company revenue and profit, % vs %p, 조/억/만 units) marked MATCH or MISMATCH against the official value with date and source (ECOS, KEXIM, DART). Numbers with no source stay unverified.
Basex402.pokt-agent.comfrom $0.00532 endpoints - Sskim402.comAI & agents
Skim: clean reader — URL to agent-ready markdown + metadata, ~4x smaller than raw HTML
Baseskim402.comfrom $0.00210 endpoints - Aapi.signalfuse.coSearch & web
Web search via Brave Search API
Baseapi.signalfuse.cofrom $0.00132 endpoints
x402 Weather APICrypto & DeFiLive current weather conditions for any city, sourced from Open-Meteo
BasePolygonArbitrum+1x402tap.comfrom $0.00116 endpoints- LLinked PandaSocial & people
Verified work-email lookup for a LinkedIn profile
Baseapi.linkedpanda.comfrom $0.019 endpoints - HHALOWERK Agent ToolsImages, audio & video
Syntax, Domain, MX-Einträge, Wegwerf-Anbieter, Rollenkonto, Freemailer, Tippfehler-Vorschlag und Zustellwahrscheinlichkeit. Optional SMTP-Handshake für Postfachprüfung.
Basetools.halowerk.comfrom $0.00135 endpoints
Agent WeatherAI & agentsOne combined reading for agent loops: AI provider health from public status pages, x402 facilitator reachability on the XRP Ledger and recent changes in our record. Returns storm (boolean), level, one reason, asOf and sources with timestamps. Additive measured fields: observed_payment_success (15m/…
Basexrplapi.agentweather.iofrom $0.00123 endpoints- LLocus x402 ServicesOther services
Locus public pay-per-use API
Baseelevenlabs.x402.paywithlocus.comfrom $0.00371 endpoint - Xx402 Listing Quality TeaserCrypto & DeFi
Top 3 x402 resources by heuristic calls-vs-unique-payers pattern score from the CDP Bazaar and PayAI catalogs, with host, resource, unique_payers, calls and wash_risk (a heuristic score, not a finding about any seller). No input. Full scored list: /v1/listing-quality ($0.01).
Basex402-niche-briefs.fly.devfrom $0.01148 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.