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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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Crypto & DeFi
267 results- Xx402-v2-mint-context-condense.vercel.appCrypto & DeFi
Condense text for token budgets: retained-fact list + dropped-content log + before/after token counts (OpenRouter free-first + approx counter). Audit loss.
Basex402-v2-mint-context-condense.vercel.appfrom $0.0081 endpoint - Oonchain-toolkit.bowling-anthony.workers.devCrypto & DeFi
Live gas price on Ethereum, Base, Arbitrum, Optimism or Polygon, in gwei plus the cost of a plain transfer. Compare several chains in one call.
Baseonchain-toolkit.bowling-anthony.workers.devfrom $0.0051 endpoint - Ddecipherranker.comCrypto & DeFi
Get a detailed merchant deep-dive by wallet address. Returns volume stats, buyer diversity, trend signals, and recommendations.
Basedecipherranker.comfrom $0.031 endpoint - Bbase-reads-api.rafliyaputra.deno.netCrypto & DeFi
Base mainnet head: latest block number, block age in seconds, base fee and gas price in gwei. Use it to check the chain is advancing and to estimate fees before sending a transaction. One small JSON read instead of several raw RPC calls and unit conversions.
Basebase-reads-api.rafliyaputra.deno.netfrom $0.0011 endpoint - OOrionCMD ChecksCrypto & DeFi
OrionCMD Checks: Prepaid domain threat watch: up to 25 domains for 30 days, webhook alerts. Pay once; each domain is re-checked about once a day for 30 days. You get an HMAC-signed JSON POST at your https webhook_url (event watch.changed) when a domain or its IPv4 appears in (or leaves) ThreatCluster's high-confidence IOC feed, when a new ransomware leak-site claim names it, when its A/NS/MX recor
Baseapi.orioncmd.comfrom $0.0112 endpoints
Generative glyph from verifiableCrypto & DeFiGenerative glyph artwork from verifiable randomness: pass a drand quicknet round number (League of Entropy, one every 3 s) and get its 512x512 SVG drawn by fixed published rules (apexfaucet.xyz/door/glyph.js), the round randomness and BLS signature, and a SHA-256 receipt of the SVG. Anyone can redraw it exactly. From THE DOOR, an open experiment at apexfaucet.xyz/door/.
BaseEVM chain 5042Solana+1apexfaucet.xyzfrom $0.001142 endpoints- Ttollbooth-sanctions-screener.sjwilliams8.workers.devCrypto & DeFi
Before your agent onboards, pays, or contracts with a counterparty: screen the name against the U.S. Treasury OFAC sanctions lists (SDN + Consolidated non-SDN, synced every 6h) for $0.01. Benchmarked 114/114 sanctioned names found with zero false positives on a 152-case adversarial corpus of misspellings, word-order swaps, and transliterated aliases. Ranked candidates with confidence 0-100, progra
Basetollbooth-sanctions-screener.sjwilliams8.workers.devfrom $0.011 endpoint - AAgent Money MapCrypto & DeFi
Call GET /api/pulse?symbol=ETH for a one-line live token price on Base. $0.001 USDC. Use when you only need the number, not a brief.
Basex402-seller.vercel.appfrom $0.0011 endpoint - VVerifyOracleCrypto & DeFi
Live forex fx rate and fiat reference exchange rate for currency conversion from the European Central Bank (ECB eurofxref-daily, default EUR/USD).
Baseverify-oracle.run402.comfrom Free7 endpoints
The Agents Gift ShopCrypto & DeFiThe Agents Gift Shop — Designs created by the paying wallet (paid)
Basetheagentsgiftshop.comfrom $0.0011 endpoint- TTreasury PreflightCrypto & DeFi
Current USDC and USDT transfer fee in USD per chain, bound to a block number with a validity window.
Basepreflight.admapu.xyzfrom $0.0021 endpoint - Ffuse402.vercel.appCrypto & DeFi
Real-time Fuse payment network statistics — transaction volumes, network health, gas tiers, FUSE token price.
Basefuse402.vercel.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 - 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- Aarispay-x402-demo-production.up.railway.appCrypto & DeFi
ArisPay x402 Ping — pay $0.01 in USDC on Base to verify your agent payment loop end-to-end (wallet, signing, 402, settlement). Powered by ArisPay; pay it with `npx payagent pay <url>`.
Basearispay-x402-demo-production.up.railway.appfrom $0.011 endpoint - 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 - Aai.fuse.ioCrypto & DeFi
Real-time Fuse payment network statistics — transaction volumes, network health, gas tiers, FUSE token price.
Baseai.fuse.iofrom $0.011 endpoint - AAccelerometerCrypto & DeFi
Use this when you need AI progress as it stood on a past date: the reading of the same 129 series (benchmarks, compute, AGI prediction-market odds, model pricing, AI stocks, energy, space, robotics, research output) taken on YYYY-MM-DD. Dated ids are listed free at /. Same per-series shape as /ai-progress/latest, so you can diff dates yourself; /ai-progress/what-changed does the diff for you. Unkn
Solanax402-accelerometer-feed.fly.devfrom $0.0018 endpoints - BBaseGuard AICrypto & DeFi
Deterministic pre-interaction report on a Base contract address: bytecode and hash, source verification, proxy and implementation storage slots, ownership and administrator control, mint, pause, blacklist and freeze capabilities, upgrade paths, token identity and supply, measured liquidity, block number and timestamp, evidence sources, and confidence with explicit limitations. Blockchain intellige
Base Sepoliawork-1-bcozevpyudcxmqdj.prod-runtime.all-hands.devfrom $0.051 endpoint - Ttoken-verdictCrypto & DeFi
Send a token contract address, get a risk verdict. Returns SOLID / CAUTION / DANGER with a 0-100 score, six weighted market-structure signals (liquidity depth, volume churn, sell pressure, price action, trader breadth, pair age) and a written analyst take. Built for AI agents screening tokens before touching them. Use this when an agent is about to buy, swap, or route funds into a token and needs
Basetoken-verdict-production.up.railway.appfrom $0.024 endpoints
Linkrra Inference CreditsCrypto & DeFiLinkrra inference credits — pay-as-you-go top-up ($1-$1000) at $0.2273/M tokens
Basepool.linkrra.comfrom $0.0018 endpoints- PPenger VerifyOracleCrypto & DeFi
Live cryptocurrency spot price in USD from Coinbase primary spot API (e.g. ?symbol=BTC-USD, ETH-USD, SOL-USD).
Basepenger-oracle.run402.comfrom Free6 endpoints
PayGuardCrypto & DeFiSanctions screen for one crypto address, for agents and apps that send payments: exact match against all 1050 digital currency addresses in the official US Treasury OFAC SDN list (EVM case-insensitive). Returns sanctioned true/false, matching SDN entity, programs and list date, a chain guess and checksum validity, plus the list date. Informational, not legal advice.
Basepayguard.agentgate.workers.devfrom $0.0011 endpoint- Aapi.slamai.devCrypto & DeFi
Returns trending tokens across the entire blockchain for a specified activity window and optional category. The size of the increase in active wallets over the activity window determines the token's trending rank.
Baseapi.slamai.devfrom $0.0014 endpoints - Chit402Crypto & DeFi
Signed spend receipts for agent x402 payments — who paid which call, verifiable by a third party. Treasury desk and possession book for agent spend — export, policy, evidence. POST /v1/chat/completions is the x402 USDC door on Base and Solana. Returns signed receipt + public verify_url. Paying this host is real mainnet USDC.
Solanaapi.chit402.comfrom $0.0021 endpoint
api.anchor-x402.comCrypto & DeFiCross-chain name resolver (POST wrapper, body: {name}) — $0.001 USDC
Solanaapi.anchor-x402.comfrom $0.00118 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.