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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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4,372 results- Mmidax402.comOther services
MIDAX402: Evidence+ x402 intelligence with expanded corpus retrieval, local risk brief, contradiction scan and concrete action plan. We do not grade our own answer: the verdict is answered or needs_more_data (grounded in the corpus or not); evidence_grade (thin/moderate/broad) grades that evidence, auditable via retrieved_corpus_ids. confidence_score is DEPRECATED, still served as a band projectio
Basealgorandalgorand+1midax402.comfrom $0.071 endpoint - WWithZeroImages, audio & video
Generate images from a text prompt with xAI's Grok Imagine quality tier. Returns hosted image URLs.
Baseagents.withzero.xyzfrom $0.0130 endpoints - AApify APIImages, audio & video
Start the "Instagram Scraper" Apify actor (apify/instagram-scraper). Scrape and download Instagram posts, profiles, places, hashtags, photos, and comments. Get data from Instagram using one or more Instagram URLs or search queri…
Basestableapify.devfrom $0.0110 endpoints - Xx402-service-production-e242.up.railway.appDeveloper tools
Email and domain trust check. Give an email address or a domain, get one risk level (low, medium, high) with plain-language flags and the facts behind them: domain age, registrar, expiry and hold status (RDAP); MX, SPF and DMARC policy; the live TLS certificate; and for emails, syntax, disposable-provider and role-address checks. Judges the domain: does not verify that the mailbox exists and does
SolanaBasex402-service-production-e242.up.railway.appfrom $0.00510 endpoints - Gglim.shSocial & people
Search users by keyword
SolanaBaseEVM chain 143twitter.surf.cascade.fyifrom $0.0016 endpoints - Xx402 FunSearch & web
A fortune cookie: one short, upbeat fortune (80 written for this service) and six lucky numbers from 1 to 49. Give a seed for a repeatable draw.
Basefun.kagurazaka.devfrom $0.0017 endpoints - Xx402 toolsCrypto & DeFi
Generate QR codes for text, URLs, or Web3 payment requests (EIP-681 / Solana Pay). Supports PNG, SVG, JSON output with dataUri, custom colors, and batching. Flat $0.002 per call.
Basex402-tools-production-2755.up.railway.appfrom $0.00213 endpoints
ForwardLaneSearch & webSearch functions or classes by meaning and by keyword. ``mode=bm25`` ranks by lexical match, ``mode=vector`` by embedding similarity to the query text, and ``mode=hybrid`` (default) fuses both rankings with reciprocal rank fusion. Returns up to ``top_k`` matches with their repository, file path and score; the ``domain``, ``ontology_concept_uri``, ``confidence_min`` and ``has_tests`` filters apply
Basezeroclickagents.forwardlane.comfrom $0.0230 endpoints
WebLensImages, audio & videoExtract text and metadata from PDF documents. Supports page-specific extraction and returns structured content.
SolanaBaseapi.weblens.devfrom $0.000536 endpoints
Affiliate.comSearch & webSearch more than one billion affiliate products refreshed daily. Pass a plain search string or an array of field filters, or use the structured query rule builder for compound conditions. Results carry pricing, availability, commission URLs, and network and merchant attribution, with support for field selection, pagination, sorting, facets, and per network affiliate link configuration.
Basezeroclick.affiliate.comfrom $0.0213 endpoints- Iintel.halowerk.comOther services
Ein bezahlter Aufruf liefert alle nicht abgelaufenen Einträge des Zahlers als JSON-Lines. Die verifizierte Zahleradresse ist der Eigentümer; Ergebnisse und gespeicherte Daten sind strikt auf diesen Zahler begrenzt.
Baseintel.halowerk.comfrom $0.0016 endpoints - Xx402 Dev ToolsCrypto & DeFi
Asks the public x402 facilitators (CDP, x402.org, PayAI, x402.rs, Dexter, Daydreams, OpenX402, Mogami, Heurist) for GET /supported right now: whether each answers, its latency, and the x402 versions, schemes and networks it settles. Pass network to keep only those that support it.
Basedev.kagurazaka.devfrom $0.0027 endpoints - HHyperliquid Smart Money Data APICrypto & DeFi
Hyperliquid perps (perpetual futures). What history exists before you pay for it: how many markets we track, which asset classes, and the range covered. The cheap probe that tells an agent whether the paid series is worth buying
SolanaBaseArbitrum+2whaletape.xyzfrom $0.015 endpoints - Aagentworld.meSocial & people
AgentWorld Agent Leaderboard - top AI agents ranked by USDC wealth or reputation score. Includes job role, city, mood, personality archetype. Updated every 3 minutes by the tick engine. Filter by city or job.
BaseEthereumArbitrum+3agentworld.mefrom $0.0012 endpoints - Ccontent.hugen.tokyoCrypto & DeFi
Extract and classify all hyperlinks from a web page — internal vs external using eTLD+1 domain matching. Returns up to 200 internal and 200 external links with counts. No web crawler setup needed. Accepts USDC payments on Base and Solana
BaseSolanacontent.hugen.tokyofrom $0.011 endpoint - Wweb-searchSocial & people
Free-text web search for AI agents: ranked title/url/snippet results fused across multiple engines (Brave, Google, DuckDuckGo, Mojeek, Startpage, Yahoo), with freshness filters (past day/week/month/year), region/locale and SafeSearch. One call for grounded, up-to-date web results — no keys, no scraping setup.
Basewebtools402.176-109-107-191.sslip.iofrom $0.00112 endpoints - Ttouchstone.locomot.ioOther services
Exact structured diff. mode=text -> unified diff + line counts; mode=json -> an RFC 6902 JSON Patch (RFC 6901 pointers) that round-trips a->b; mode=words -> inline word-level opcodes. For large inputs use POST. Every answer signed. Free sample, no payment required: GET /play/diff
Basetouchstone.locomot.iofrom $0.00114 endpoints - 447620 Utilities APICrypto & DeFi
Convert any value between units: length (m/km/mi/ft/in/yd/nmi, plus Russian verst/sazhen/arshin/vershok), mass (g/kg/lb/oz/tonne, plus Russian pood/funt/zolotnik), area (m2/ft2/km2/acre/hectare) and temperature (C/F/K). Pass ?value=<n>&from=<unit>&to=<unit>. Returns the converted value and the unit category.
SolanaBasePolygon47620.xyzfrom $0.00185 endpoints - Xxhagents.xyzImages, audio & video
One 0-100 safety score for a Base token before an agent buys: liquidity, top-10 holder concentration, owner powers in the bytecode, upgradeability (EIP-1967), explorer/Sourcify verification, creator history, small-trade price impact. Verdicts: safe/caution/danger per component, unknown when a check could not run, and not_a_token with no score when the address deploys no code.
Basexhagents.xyzfrom $0.0328 endpoints - WWebsterBerry SynapticSocial & people
Screen a person or business name against the US Treasury OFAC SDN sanctions list (including aliases), and optionally confirm an EIN against IRS Publication 78 nonprofit data.
Basesynaptic.websterberrymarketing.comfrom $0.00510 endpoints - BbasedueCrypto & DeFi
Public holiday and business-day calendar for US and UK: is a date a business day, add N business days, count business days between dates (net of holidays), and list a year's holidays. $0.01 per call in USDC on Base via x402.
Baseapi.firstmention.ukfrom $0.0127 endpoints
SorenCrypto & DeFiRead current gas price and base fee, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain unsigned data; the attested version of chain reads is /v1/oracle/onchain. Answers are read at the moment of the call and stamped with the block they came from where applicable.
Basesoren.comfrom $0.00216 endpoints
CRA AGENT dataImages, audio & videoA short plain-text summary of one Wikipedia article, with its image and last update. Content is CC BY-SA 4.0.
SolanaBaseEVM chain 5042+10api.cra-agent.techfrom $0.000520 endpoints- AAgent Payload ToolsCrypto & DeFi
Hash text, strings, or UTF-8 payload data with SHA256, SHA384, or SHA512. Compute a cryptographic hash, checksum, or digest for payload integrity, content fingerprinting, cache keys, and verifying that data has not changed.
BaseSolanaapi.agent-payload-tools.workers.devfrom $0.0018 endpoints - HHyperliquid Market DataCrypto & DeFi
Current mid price for every Hyperliquid asset (perps + spot) in one call — a fast whole-venue price snapshot.
BasePolygonArbitrum+1hyperliquid.use.x402atlas.comfrom $0.0059 endpoints - PPerp Gap APICrypto & DeFi
Use first to see which venues list a ticker and get the exact symbol before /quote, /funding or /gaps. Every stock perp and tokenized stock agents can trade: trade.xyz, Aster, Lighter and OKX perps plus xStocks and Ondo tokens (2,400+ markets), with venue, symbol or mint, underlying, type, live and tradable-now flags. Same data free at GET /catalog. Errors: 400 unknown venue, 402, 502. Data, not a
BaseSolanaperp-gap-api.perpgap.workers.devfrom $0.00112 endpoints
Verdix Address Risk (standard)Crypto & DeFiVerdix standard ($0.10): call before larger or repeated payments to an EVM address on Base, when an address-age read is not enough. Sanctions, scam/phishing lists, address poisoning and contract/deployer signals, plus on-chain behaviour analysis. Returns safe/caution/danger with reasons.
Baseapi.verdixapi.comfrom $0.015 endpoints- TTWZRD Agent IntelligenceCrypto & DeFi
Seller wash risk and wallet reputation for a Solana x402 merchant: wash label, fleet %, payer count, plus tier + score. 0.001 USDC. No signed V7 receipt (use GET /v1/intel/trust for the portable proof). Free preflight is allow|warn|block only. Sponsored Solana accepts require a payment client that honors accepts[].extra.feePayer (for example @x402/svm ExactSvmScheme); AgentCash cannot settle that
SolanaBaseintel.twzrd.xyzfrom $0.0014 endpoints - AAgent Kalender HubAI & agents
Deutschland auf Bundeslandebene inklusive der Gemeinde-Sonderfälle, Österreich auf Bundeslandebene, die Schweiz auf Kantonsebene. Bewegliche Feste werden aus dem Osterdatum gerechnet, nicht aus einer Tabelle gelesen.
Basekalender.halowerk.comfrom $0.0011 endpoint - LLookproofAI & agents
Split an IPv4 or IPv6 CIDR block into subnets of a longer prefix, in order, at most 256 at a time; a larger split is refused before anything is computed. Offline. Use when an agent must plan an address layout or hand out subnets. Input: ?cidr=192.0.2.0/24&prefix=26.
Baseapi.lookproof.devfrom $0.00247 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.