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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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- Paid calls · 30 days
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Crypto & DeFi
1,108 results- Ccurrency-api-production-4a8d.up.railway.appCrypto & DeFi
Current price, market cap, and 24h change for a single cryptocurrency by symbol or name (CoinGecko).
Basecurrency-api-production-4a8d.up.railway.appfrom $0.0013 endpoints - KKertivo ShieldCrypto & DeFi
Address-poisoning check before you send USDC on Base. Body {from, to} (or sender/recipient; chain=base, token=USDC only, others 400 not charged; optional contacts/known_addresses): scans the sender's recent Base USDC transfers for lookalikes (same first/last 4 hex) plus dust/zero-value transfers. No sender? {recipient, known_addresses} = offline contacts check; {address} alone scans its own histor
Basepaycheck.hectichustle.workers.devfrom $0.0015 endpoints - BBase Address InspectorCrypto & DeFi
Check a BNB Smart Chain wallet's ERC-20 approvals: allowances for 8 major tokens (USDT, USDC, WBNB, BUSD...) to common spenders (Permit2, PancakeSwap v2 Router, PancakeSwap Smart Router, PancakeSwap Universal Router...); flags unlimited approvals.
Baseautomaton-tx-explainer.vercel.appfrom $0.00542 endpoints - Xx402 Base ToolsCrypto & DeFi
Current Base gas: base fee, priority fee percentiles over the last 10 blocks, the L1 data fee of a typical transaction, and what an ETH transfer, an ERC-20 transfer, a USDC transferWithAuthorization (an x402 payment), a swap and an NFT mint cost now in ETH and USD (ETH/USD from Chainlink).
Basebase.kagurazaka.devfrom $0.0019 endpoints
NythosX Market DataCrypto & DeFiSignal bias with setup levels and invalidation. Rules-based bias (bullish/lean_bullish/neutral/lean_bearish/bearish) with score, confidence, setup, weighted factors, invalidation. tf sets candle size and lookback (5m=1H to 1w=1Y): shorter is faster but noisier, longer is slower but higher-conviction. Accuracy free at /api/v1/track-record. Quick direction + one setup; get_trade_plan ($0.03) adds ta
Base SepoliaBasemarket.nythosx.comfrom $0.0056 endpoints- Xx402-seller-0ay3.onrender.comCrypto & DeFi
Top DeFi protocols ranked by TVL (total value locked), highest first, source DefiLlama. Optional parameter: ?limit=<n> (1 to 100, default 20).
Basex402-seller-0ay3.onrender.comfrom $0.00527 endpoints - Xx240.jvnclk88.workers.devCrypto & DeFi
URL preflight - status, redirect chain, key headers, response time, robots.txt rules for the path and sitemap location
BaseBase Sepoliax240.jvnclk88.workers.devfrom $0.00216 endpoints - PPyfile x402 APICrypto & DeFi
Latest EVM block number for base|polygon|arbitrum|optimism. ?chain=base
BasePolygonArbitrum+1pyfile-agent.taile3ff35.ts.netfrom $0.00217 endpoints - Aapi.zendiq.aiCrypto & DeFi
Solana swap triage for AI agents. Returns a Safe / Protect / Refuse verdict for a proposed swap: token risk screening, sandwich-attack exposure, and the priority fee and Jito tip to use. Call it before signing a swap. Advisory only: builds no transaction and never handles keys. Pay in USDC; network fees are sponsored. Full contract: GET /v1/agent. Terms: https://zendiq.ai/agents/terms/
Solanaapi.zendiq.aifrom $0.012 endpoints - Ccompute-api-production-245d.up.railway.appCrypto & DeFi
Estimate token count
Basecompute-api-production-245d.up.railway.appfrom $0.00110 endpoints - AApiToll Crypto NewsCrypto & DeFi
Latest crypto news and breaking headlines, real-time from Cointelegraph. Search any topic (bitcoin, ethereum, DeFi, regulation, market sentiment) or pull the live feed, with full article text across 14 languages. Built for agents tracking crypto markets, tokens, and Web3.
BaseSolananews.apitoll.cloudfrom $0.0011 endpoint - WWallets Demo WeatherCrypto & DeFi
Real-time current weather conditions for a city or location, including temperature, humidity, precipitation, wind, and a human-readable condition.
Base Sepoliawallets-demo-seller-server.calebgcarithers.workers.devfrom $0.0011 endpoint - CClearCheckCrypto & DeFi
Federal disaster declarations for a US state or county: what is open now, incident types, and how recent.
BaseSolanaPolygon+1loonie-toll.onrender.comfrom $0.0249 endpoints - AAgent Data BenchCrypto & DeFi
Fee inputs for the next transaction: gas ladder for Base or Ethereum (slow/normal/fast, priority fee, max fee, EIP-1559 base fee) or the priority-fee ladder for Solana, plus the native token price. One call for the numbers a transaction builder needs.
Basex402.deepsense.streamfrom $0.00123 endpoints
Astro AgentsCrypto & DeFiPlanetary positions: Tropical (or sidereal) longitudes, latitudes, speeds and retrograde flags of Sun..Pluto, nodes, Lilith.
SolanaBaseastro-agent.devfrom $0.0122 endpoints- loophole tapeCrypto & DeFi
New Solana tokens as they launch on pump.fun: a cursor feed of new memecoin launches with rug probability and graduation odds ($0.001 per poll). Use when a bot polls for newly launched Solana tokens on pump.fun with their calibrated odds; for a one-off screen of the last hour use GET /v1/launches/recent, and for one mint the $0.005 rug check.
SolanaBaseRobinhood Chain+1api.loopholetape.comfrom $0.00127 endpoints - 1138-197-15-135.sslip.ioCrypto & DeFi
Block number, timestamp, hash, tx count, gas used/limit and base fee for the latest (or given) block on Base, Ethereum, Arbitrum or Optimism. Deterministic, no LLM.
Base138-197-15-135.sslip.iofrom $0.00128 endpoints
Crypto Data & Market AnalysisCrypto & DeFiWhether the current reading is actually high or low, from a series captured every ~10 minutes: funding, open interest, Fear & Greed and BTC dominance, each as current, median, min, max and percentile over the window. A funding rate of 0.006% means nothing on its own; at the 89th percentile of the last 24 hours it means something. This is the question a snapshot endpoint cannot answer, whoever you
Basecrypto-asistent.comfrom $0.00520 endpoints
TxSim DecoderCrypto & DeFiDecode raw EVM calldata into a named function, signature and arguments, plus security risk flags (unlimited token approval, setApprovalForAll, ownership transfer, unknown selector, native value transfer). Keyless, deterministic, no simulation - the cheap way for an agent to understand and risk-screen a piece of calldata before signing.
Basesimulate.cyberwarex.comfrom $0.0023 endpoints- HHodlOddsCrypto & DeFi
Last known SOL-token crash odds, at most 30 minutes old
SolanaBaseapi.hodlodds.comfrom $0.0023 endpoints
OceanAltCrypto & DeFiSanctions screening, anti-money laundering (AML) screening and payee screening (KYT) before an AI agent pays: OFAC and other sanctions lists, mixers, scam and hack lists, on-chain risk. Returns a crypto compliance decision (allow / review / decline) with verifiable evidence and a signed receipt. Prepaid credits are cheaper: see POST /api/x402/credits.
BaseX LayerSolanaoceanalt.comfrom $0.0025 endpoints- Ppulse-api-production-7aae.up.railway.appCrypto & DeFi
Global Pro adds independent higher-timeframe context, SMA family, regression channel, anchored VWAP, Fibonacci, confirmed pivots, RSI and ATR evidence to the same 520-candle chart and aligned Spot plan. Context follows the selected timeframe; conditional paths and unclear Elliott counts are explicit. Free full-report recovery. Market or Limit orders require separate wallet review and signing.
ArbitrumBasepulse-api-production-7aae.up.railway.appfrom $0.206 endpoints
CookinCrypto & DeFiThe 20 most recent buys by the top Cookin trading agents, newest first, each with quality signals plus when it was bought and by which agent.
Solanaapi.cookin.funfrom $0.011 endpoint- Ppennypress.orgCrypto & DeFi
Witness the SHA-256 fingerprint of a literary work: submit a title, content hash, and optional pen name; receive a tamper-evident, hash-chained receipt. Timestamping, not endorsement. We never see the work itself.
Basepennypress.orgfrom $0.0130 endpoints - SStableStudioCrypto & DeFi
Get a client token for direct upload to Vercel Blob
BaseSolanastablestudio.devfrom $0.011 endpoint - AAgent Rest StopCrypto & DeFi
Crypto USD price. Send a symbol such as ETH or BTC.
Baseagent-gas-station.agent-gas-station.workers.devfrom $0.00254 endpoints - AAvasis Agent PlatformCrypto & DeFi
Base (chain 8453) gas tip for agents that send transactions: latest block number and age, base fee, eth_gasPrice, eth_maxPriorityFeePerGas and a suggested maxFeePerGas (2x base fee + priority), from one batched RPC call every 2 s. Long-poll with ?since=<seq>&wait=25. Prepaid meter price $0.0002/call (packs at /v1/meter); SSE at /v1/stream/tips.
Baseagents.avasis.aifrom $0.00226 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 - 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
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.