Explore APIs
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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- Paid calls · 30 days
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2,935 results- Mmadeonsol.comCrypto & DeFi
Real-time alerts from tracked Pump.fun deployers (all graded tiers)
Solanamadeonsol.comfrom $0.00544 endpoints - LLupaRielOther services
LupaRiel catalog URL liveness (SKU#14) — paid per call. Probe fichas from the same catalog as /rieles.json.
Baselupariel.comfrom $0.0057 endpoints - LLupaPlazaOther services
LupaPlaza plaza probe — one-shot HTTP 402 check of a public URL, paid per call.
Baselupaplaza.comfrom $0.013 endpoints - LLupaPagoMarkets & finance
LupaPago PSP recommend — top AR pasarelas for amount/cuotas/USD (rules v1).
Baselupapago.comfrom $0.017 endpoints - LLumen WorksCrypto & DeFi
Decode Ethereum calldata: selector, 4byte/openchain signature lookup, ABI-decoded args for each matching candidate. Optional {signature} override.
Baselumenworks-x402-decoder.onrender.comfrom $0.0013 endpoints - Llosbeto-production-dd7c.up.railway.appOther services
No description yet.
Solanalosbeto-production-dd7c.up.railway.appfrom $0.0033 endpoints - Llookup.bustercall.workers.devOther services
No description yet.
Baselookup.bustercall.workers.devfrom $0.00132 endpoints - Llokyai.comOther services
No description yet.
Polygonlokyai.comfrom $0.00016 endpoints - Lloki-railpulseCrypto & DeFi
Token price snapshot: USD, market cap, 24h change (coingecko id)
Solanaloki.freedomlab.spacefrom $0.0014 endpoints - Llogicnodes.ioCrypto & DeFi
Gas / fee estimate. Current fee tiers for a chain as decimal strings with explicit units. EVM: confidence levels (default 99/95/90/80/70) in gwei with base fee, priority fee and max fee. Aptos: deprioritized/regular/prioritized gas unit prices in octas per gas unit. Data older than its freshness budget is an error, never a stale answer.
Baselogicnodes.iofrom $0.0011 endpoint - Lllms-generatorCrypto & DeFi
AgentDiet Semantic Distillation (/v1/distill) — Strips 85-97% of HTML token bloat
Basellms-generator.agentdiet.devfrom Free5 endpoints - Lllms-generatorCrypto & DeFi
Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router (/v1/x402-broker) — Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression and Prompt-Guard firewall.
Basellms-generator-72343955726.us-central1.run.appfrom Free5 endpoints 
UUID GeneratorImages, audio & videoExtract the readable article content from any url as clean markdown with a sha256.
BasenanoSolanallmrt-companion.manhliemcn4euwlu.workers.devfrom $0.00005834 endpoints- LLinkheftDeveloper tools
Linkheft: Domain rank and authority lookups, up to 50 domains a call.
Baselinkheft-api.cybermaxtools.comfrom $0.0021 endpoint - LLinkheftDeveloper tools
Linkheft: Domain rank and authority lookups, up to 50 domains a call.
Baselinkheft-api.cybermax-tools.workers.devfrom $0.0021 endpoint - Ffree-books-1620sImages, audio & video
Free audiobooks on "Americans": public-domain recordings (LibriVox and Internet Archive audio) whose subject tags match, with runtime, language and mp3 links, most downloaded first. Add words to narrow. $0.01 per page of 20.
Baselibrary.intel.rallylive.cafrom $0.0110 endpoints - LLEGITOther services
LEGIT: trust scores and organic demand intelligence for the x402 agentic economy. Created by GONNA.
Baselegit.gonna.bondfrom $0.0051 endpoint - LLegible CheckOther services
Legibility check of one hashn store listing against the rule legible (effective 2026-10-28)
Baselegible-check.ezealfa.workers.devfrom $0.0053 endpoints - LLeafmeltAI & agents
Leafmelt: Documents to clean Markdown for AI agents and RAG: PDF, Word, Excel, OpenDocument, CSV, HTML and more.
Baseleafmelt.cybermaxtools.comfrom $0.0081 endpoint - LLeafmeltAI & agents
Leafmelt: Documents to clean Markdown for AI agents and RAG: PDF, Word, Excel, OpenDocument, CSV, HTML and more.
Baseleafmelt.cybermax-tools.workers.devfrom $0.0081 endpoint - Llazareus.xyzCrypto & DeFi
Checks whether the Solana network is currently degraded
SolanaBaselazareus.xyzfrom $0.0018 endpoints - LLAX registry by KognaiAI & agents
LAX registry by Kognai: list your AI agent in the Linked Agent eXchange so Kognai citizens, agents and outside buyers can find and hire it. Send your offer as the JSON body: name, description, an https endpoint, capabilities priced in USDC over x402, and the Five Laws accepted. Use it when your agent sells a service and wants buyers. Listing fee 0.01 USDC on Base. Kognai never asks for keys or see
Baselax.kognai.aifrom $0.011 endpoint - Landing en 24hSocial & people
Validate an Argentine tax ID (CUIT/CUIL): checks length, prefix and modulo-11 check digit offline, and returns normalized and formatted values plus entity type (person/company). Send {cuit}. Nothing is stored.
BasePolygonlandingen24h.comfrom $0.00118 endpoints - FFortune GeneratorOther services
Get a random fortune via x402 payment on Base mainnet.
Baseladyfortunalx402.vercel.appfrom $0.011 endpoint - FFastX402Crypto & DeFi
Takes an IPv4 CIDR block like 10.0.0.0/22 plus an optional IP and returns network address, broadcast, netmask, wildcard, first and last usable host, usable host count, and whether the IP falls inside the block. Handles non-octet boundaries and /31, /32 edge cases.
Baselab.fastx402.toolsfrom $0.0016 endpoints - Kkronos.seshat.marketsSearch & web
Browse recent predictions ordered by most recent first. Filter with ?symbol=btc_usdt, ?status=audited|auditing|pending, ?days=30, ?limit=100 (max 1000, max 20 with ?detail=1). Use ?detail=1 to include full pred_candles arrays (default: stripped — use /decision/:id for single full detail). Response includes total count for pagination.
Solanakronos.seshat.marketsfrom $0.0013 endpoints 
Kristo IntelligenceCrypto & DeFiKristo Intelligence - paid API data (/api/stats)
Basekristo-intelligence-api.onrender.comfrom $0.0035 endpoints- CCrypto Microdata for AgentsSocial & people
Live Korea kimchi premium: Upbit KRW vs global USD for BTC and ETH, plus USD/KRW FX. Korea crypto arb/sentiment signal. Optional symbols=BTC,ETH filter. Alias: /kr/kimchi-premium.
Basekr-x402-mvp.kgy5612.workers.devfrom $0.00163 endpoints - Kkr-notices-x402.pn-26f.workers.devOther services
Latest Bithumb notices, normalized: type classification, asset tickers, timestamps, source URL
Basekr-notices-x402.pn-26f.workers.devfrom $0.0021 endpoint - KKlearFlow RelaySocial & people
Inspect a real business revenue opportunity using KlearFlow scoring and revenue-leak economics.
Baseklearflow.vercel.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.