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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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2,879 results- PPoint distanceOther services
Euclidean, Manhattan and Chebyshev distance between two 2-D points.
Basegeometry.openverbs.comfrom $0.0041 endpoint - GGeocode an addressDeveloper tools
Convert a free-form address or place name into ranked coordinates with a structured, normalized address. Optionally bias by country and language.
Basegeocode.openverbs.comfrom $0.0061 endpoint - x402 Trust ScanCrypto & DeFi
Pre-payment trust check of any x402 endpoint, so an agent can filter malformed or unknown (honeypot) endpoints before spending. Reads the target's own 402 terms (reachability, HTTPS, well-formed x402 v2, Bazaar discovery extension) and the public Coinbase CDP catalog (whether the payTo has settled history). Returns tier ESTABLISHED/BASIC/UNVERIFIED, a 0-100 trust_score, per-signal booleans and rea
SolanaBasegdzlcxskuhupymyxywzm.supabase.cofrom $0.0018 endpoints - Fforetagskoll.lolalex64.workers.devData & research
Swedish company lookup by organisation number: official name, legal form, active/deregistered status, ongoing liquidation or bankruptcy, registration date, address, SNI industry codes and business description. Source: Bolagsverket and SCB.
Baseforetagskoll.lolalex64.workers.devfrom $0.011 endpoint - AAI Web ExtractorSearch & web
AI Web Extractor — turn ANY url into clean, LLM-ready markdown. POST {url}; get the main content as markdown (boilerplate/nav/ads stripped) with title, description, and links. The scrape / read / url-to-markdown primitive for RAG and research agents. Fast, cheap, x402-native.
BaseSolanaextract.vevang.comfrom $0.011 endpoint - NNOB7E Evidence VerdictDeveloper tools
Evaluate a claim or question against one supplied HTML or PDF source and return anchored evidence.
Baseevidence-verdict-production.up.railway.appfrom $0.011 endpoint - EEdge Agents AICrypto & DeFi
Euro Area M3 from official ECB statistics, normalized for autonomous-agent use with explicit source timing, evidence and limitations. Purpose: give an agent the latest available euro area m3 with recent official history and source timing 24-hour freshness target; missing evidence is reported explicitly rather than invented.
BasexrplSolana+2edge-agents.aifrom $0.011 endpoint - DDomain IntelSocial & people
Company domain intelligence. Use when you need to know what a company's website runs on or how its email is set up: tech stack (CMS, e-commerce, analytics, chat, payments), email provider from MX, SPF/DMARC, domain age and registrar. No personal data.
Basedomain-intel.latamfx.workers.devfrom $0.0031 endpoint
DNSPulseDeveloper toolsDomain & DNS intelligence — records, SSL certs, subdomain discovery.
BaseSolanadnspulse.waltsoft.netfrom $0.0051 endpoint- PPort 402Crypto & DeFi
Store a JSON value under a key in your persistent memory (namespace = your paying wallet).
Basedesktop-klb86tv.tailc3a527.ts.netfrom $0.0021 endpoint
DAP Compute Market TrackerSearch & webSearch compute derivative contracts by venue, status, index and settlement.
Basedap.solutionsfrom $0.011 endpoint- Ccrypto.penguindriver.comCrypto & DeFi
165 涉詐網址比對(付費版)
BaseSolanacrypto.penguindriver.comfrom $0.011 endpoint
YourAITools CreditsCrypto & DeFiPrepaid API credits (sample pack). Prepaid credits for the YourAITools agent APIs: one x402 payment of $0.005 USDC mints an API key holding $0.005 of credits. Send it as Authorization: Bearer <key> to PayGuard, TokenVerdict, SignCheck, WebRead, InjectScan, DomainCheck, PkgGuard, StackDetect or AgentGate paid routes; each call debits its normal price instead of an on-chain payment. Key shown once.
BasePolygonArbitrum+1credits.agentgate.workers.devfrom $0.0051 endpoint- Ccontracts.memoryapi.orgSearch & web
Search active US federal grant opportunities on Grants.gov
Basecontracts.memoryapi.orgfrom $0.011 endpoint - CCombinations (nCr)Developer tools
Binomial coefficient nCr = n!/(r!(n-r)!), the number of unordered r-subsets of n. Requires r ≤ n and min(r, n-r) ≤ 10000.
Basecombinatorics.openverbs.comfrom $0.0041 endpoint - Cclearcut.clawca.shImages, audio & video
Remove the background from an image URL and return a hosted transparent PNG URL. Paid responses include a feedback_id. Please rate the result for other agents with one free GET: https://clearcut.clawca.sh/feedback/rate?feedback_id=FEEDBACK_ID&outcome=fully|partially|no.
Baseclearcut.clawca.shfrom $0.0011 endpoint - Cchina-trends-x402.onrender.comSearch & web
What China is talking about right now: merged real-time hot-search lists from Weibo, Baidu, Douyin, Zhihu, Toutiao, Bilibili, Tencent News and The Paper in one schema (rank, title, heat, link). Optional keyword filter (Chinese or English) to monitor a brand/topic. 中国实时热搜聚合:微博/百度/抖音/知乎/头条/B站/腾讯/澎湃。
Basechina-trends-x402.onrender.comfrom $0.0051 endpoint
Tanod chainpeekCrypto & DeFichainpeek (Tanod) Solana SPL token mint info: supply, decimals, authorities. Read-only. Use when an agent needs an SPL token mint's supply, decimals and authorities on Solana.
BasePolygonSolana+2chain.tanod.devfrom $0.0021 endpoint- CCanaryGuard 402Crypto & DeFi
Deterministic prompt-injection firewall and honeypot scrubber for AI agents. Sanitizes untrusted text and blocks detected wallet-draining commands before context ingestion.
BaseSolanacanaryguard-402.onrender.comfrom $0.0135 endpoints - Ccall402.comCrypto & DeFi
Run local cryptographic utilities: SHA-256 and SHA-512 hashes, Base64 encode/decode, or a random UUID v4. No upstream service is called.
Basecall402.comfrom $0.0052 endpoints - Ccalibration-court.onrender.comOther services
Paid (x402, USDC on Base). Fit isotonic calibration on YOUR labelled outcomes ({p,y} pairs) and recalibrate the given probabilities. Statele
Basecalibration-court.onrender.comfrom $0.012 endpoints - Bblockrun-staging-556aefa-023519-vbsbhh7lea-uc.a.run.appAI & agents
AI chat completions API - pay per request with USDC on Base
Baseblockrun-staging-556aefa-023519-vbsbhh7lea-uc.a.run.appfrom $0.0021 endpoint - Bblockrun-staging-3aed133-034733-vbsbhh7lea-uc.a.run.appAI & agents
AI chat completions API - pay per request with USDC on Base
Baseblockrun-staging-3aed133-034733-vbsbhh7lea-uc.a.run.appfrom $0.0021 endpoint - Aaspern.orgAI & agents
The daily history of one agent record: dealings, independent payers, concentration and delivery over time.
Baseaspern.orgfrom $0.011 endpoint - Aapi.x402.printmoneylab.comCrypto & DeFi
Single buyer wallet's 8-label classification with confidence, all services used, and transaction patterns.
BaseSolanaapi.x402.printmoneylab.comfrom $0.0051 endpoint - Aapi.trustboost.devOther services
PII sanitization — pay-per-call entry point
BaseSolanaapi.trustboost.devfrom $0.011 endpoint - Rrecallsapi.comSearch & web
Search recall records from 9 US agencies (CPSC, FDA, NHTSA, US Coast Guard, FAA and more) by words, category and date, newest and most relevant first. Each record has hazard, remedy, firms, products, identifiers, as-of date and the agency source link. Use for questions like "recent listeria recalls" or "Takata airbag recalls".
Baseapi.recallsapi.comfrom $0.011 endpoint - DDragons Eye LookupDeveloper tools
Dragons Eye Lookup: Prepaid vendor ransomware watch: up to 25 vendors for 30 days, webhook on new claims. Pay once; each vendor (domain or company name) is re-checked about once a day for 30 days. When one appears in a new ransomware leak-site claim from a commercially reusable source you get an HMAC-signed JSON POST at your https webhook_url (event watch.changed). A watch.created POST is sent rig
Baseapi.ransomware-tracker.comfrom $0.0112 endpoints - PPulseWatch Status APIOther services
PulseWatch Status API: Status of up to 25 vendors in one call (PulseWatch). Live status and active incidents for up to 25 SaaS vendors in one call (GitHub, Stripe, AWS and more). One JSON row per vendor. $0.05 USDC on Base.
Baseapi.pulsewatch.usfrom $0.013 endpoints - Aapi.mgo.chain-ops.xyzCrypto & DeFi
Find the cheapest EVM chain before you transact. Compares live gas across Ethereum, Base, Arbitrum & Optimism and returns the cheapest chain with savings % (e.g. "Use Base — saves 99.8% vs Ethereum"). Call this before bridging, deploying, or any tx with chain flexibility. $0.001 USDC, no API key.
Baseapi.mgo.chain-ops.xyzfrom $0.0011 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.