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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
1,108 results
FTSO YggdrassilCrypto & DeFireal-time cryptocurrency price snapshot with usd prices from the ftso yggdrassil value provider
Baseapi.ftso-yggdrassil.comfrom $0.0023 endpoints- Eexhibit402.dylan-caponi.workers.devCrypto & DeFi
Re-verify any exhibit402 proof-of-publication certificate for $0.02. Pass id = ERC-721 token id, Arweave tx id, or job id. The service re-downloads the permanently stored screenshot and signed manifest, recomputes every SHA-256, and checks them against the manifest and the on-chain record (immutable screenshotSha256, tokenURI, owner). Returns a machine-readable verdict with per-check detail, so an
Baseexhibit402.dylan-caponi.workers.devfrom $0.022 endpoints
Base Token Safety & Rug CheckCrypto & DeFiIs this Base token safe to buy? One call returns a decision-grade trade-safety verdict — SAFE | CAUTION | AVOID — with risk_score (0-100) and reasons: honeypot/sellability simulation, owner-renounced + mint/pause/blacklist/fee-setter/upgradeable-proxy checks, symbol/name/decimals, and Uniswap v3 WETH-pool liquidity (USD). Replaces many RPC calls and prevents a bad trade. Use when an agent is about
Baseapi.greyridgesignals.aifrom $0.0023 endpoints- TToken PreflightCrypto & DeFi
Token Preflight: pre-trade safety check for a Base ERC-20 (buy/sell simulation, taxes, owner powers, liquidity, LP, holders, verification) with a shareable verdict card. Not investment advice.
Baseseenly-token-preflight.vercel.appfrom $0.022 endpoints - RRemittancePulseCrypto & DeFi
Best exchange rate and FX margin for money transfers: live mid-market rate vs provider markups for real-cost analysis. What recipient actually gets, how much currency-conversion markup providers charge, and exact converted amount for any currency pair. Live ECB mid-market rate plus rate environment. Worldwide currencies.
BaseSolanaPolygon+8remittancepulse.theaslangroupllc.comfrom $0.0510 endpoints - MMealPulseCrypto & DeFi
Dietary restriction guide / food allergy guide / diet guide (gluten-free/celiac, keto, vegan, low-FODMAP, renal, diabetic). Returns safe foods, hidden sources to avoid, safe swaps, and restaurant ordering tips for any dietary restriction, allergy, or medical diet. Worldwide.
BaseSolanaPolygon+8mealpulse.theaslangroupllc.comfrom $0.0510 endpoints - 001MindCrypto & DeFi
Check whether a smart contract's source code is verified on Sourcify, the open verification registry, by chain id (Base is 8453, Ethereum 1) and address, with the date it was verified. A contract not on Sourcify fails; it may still be verified elsewhere, so a fail means "not verified on Sourcify", nothing stronger.
Base01mind.netfrom $0.00211 endpoints - SSkoposCrypto & DeFi
Live spot price and 24h change for a crypto token symbol.
Basetryskopos.xyzfrom $0.012 endpoints - SSafeRouteCrypto & DeFi
Check whether an approved Base token swap is eligible before supplying a wallet. Returns verified token contracts, indicative output, liquidity sources, fee estimate, warnings, and the exact next action. No custody, signing, or execution.
Baseapi.usesaferoute.comfrom $0.0012 endpoints - Aa-unCrypto & DeFi
Web Search + Read: live web search for AI agents. Use when the agent needs current information beyond its training data. Returns ranked results (title, url, snippet, source) and, with read_top, the clean Markdown of the top pages in the same call. Charged only when at least one result is returned; empty or blocked searches are never charged.
Basea-upgradenet.comfrom $0.00116 endpoints - PPlainsightCrypto & DeFi
Live crypto prices: USD spot for BTC, ETH and SOL in one call, fetched per call (not cached), so the figure is the number right now. A cheap, high-frequency data lane for x402 buyers budgeting in the unit they pay with. Sourced from public feeds (Coingecko primary, Kraken fallback).
Baseshop.netlobo.comfrom $0.00113 endpoints
Argos Bot CTS Bridge APICrypto & DeFiLook up Arc/Base original and wrapped token addresses, bridged supply and ownerless verification. Arc Gateway or direct Base USDC: 0.005 USDC.
EVM chain 5042Basebridge-api.argosbot.iofrom $0.0052 endpoints- CCheckpoint402 Tx ExplainerCrypto & DeFi
Explains any Base or Ethereum transaction in plain English: who sent what to whom, which tokens/NFTs moved, the function called, success/failure and fee — plus the structured decoded data.
Baseapi.checkpoint402.comfrom $0.026 endpoints - AAgent Transaction TrustCrypto & DeFi
Authorize an AI-agent payment under a predelegated spending policy before funds move. Verify that the merchant's exact x402 challenge, amount, payer, payee and HTTP request are within authority already delegated to the agent. No synchronous human approval is required when the predelegated policy permits the purchase. Includes signed authorization plus post-payment on-chain settlement verification
Basejson-repair-api-9ybv.onrender.comfrom $0.0015 endpoints - Xx402 CartographerCrypto & DeFi
Ranks live x402 endpoints for a task such as 'web search', 'token price' or 'pdf to text'. Returns up to 10 endpoints ranked by text match, 7-day liveness probes and on-chain USDC payer counts. Not charged when nothing matches.
Basefinder.marknetic.co.ukfrom $0.0055 endpoints - EEagle EyeCrypto & DeFi
Eagle Eye v1.0.0 — U.S. enterprise-grade wallet compliance screening. OFAC SDN + Circle USDC blacklist on Base. Signed audit receipts. Certified single-address check.
Baseeagle.quickai.buildfrom $0.0051 endpoint - Ccrypto.forgemesh.ioCrypto & DeFi
Returns current market risk state, per-symbol signal streaks, and active cooldown timers — use it as a pre-trade risk gate before acting on any signal. Typical agent tasks: check if BTC or ETH is in cooldown before a trading agent acts, confirm signal streak length for momentum context, gate an autonomous workflow on risk state, or add a safety check ahead of a decision call. Fresh continuously, U
Basecrypto.forgemesh.iofrom $0.024 endpoints - MM2M SentinelCrypto & DeFi
How deep is liquidity for tracked Base tokens and how much is actually trading, with the source named, for sizing an order or declining one.
Baseapi.m2msentinel.comfrom $0.0053 endpoints - Lliquita-x402-edge.liquita.workers.devCrypto & DeFi
Real-time at-risk DeFi borrowers across Aave V3, Morpho, Comet, Euler V2, Fluid, Moonwell, Spark on 11 EVM chains. Returns health factor, collateral, debt, and protocol. Updated every 5 minutes from the liquita liquidation engine.
Baseliquita-x402-edge.liquita.workers.devfrom $0.0012 endpoints - Ggas.genexxis.comCrypto & DeFi
Current gas on one EVM chain: base fee and slow/standard/fast priority fee in gwei, and USD cost of a native transfer, an ERC-20 transfer and a Uniswap swap including the L1 data fee on rollups.
Basegas.genexxis.comfrom $0.0022 endpoints - MMercer x402 (hub probe)Crypto & DeFi
Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.
Basex402.lucidcove.orgfrom $0.0011 endpoint - Ccanary.countersignpay.comCrypto & DeFi
Current Base mainnet block height and base fee per gas in wei, read from the chain at request time
Basecanary.countersignpay.comfrom $0.011 endpoint - 55108-x402.community.iamstarchild.comCrypto & DeFi
Get real-time spot price and market data for a cryptocurrency
Base5108-x402.community.iamstarchild.comfrom $0.0021 endpoint - Nnooscape.siCrypto & DeFi
Nooscape pre-flight check on an AI agent in an on-chain registry (ERC-8004, Solana), a wallet that registers agents, or an endpoint host: dated flags for first seen, ownership changes, revoked ratings and fleet, with sources. No score, no verdict.
BaseEVM chain 5042nooscape.sifrom $0.011 endpoint - Ddev.gavedu.comCrypto & DeFi
Crypto market data bundle: BTC/ETH OHLCV candles (Coinbase) with pre-computed EMA10/EMA30, RSI14 and trend/range/chop regime label per request — one call replaces fetch + indicator math.
Basedev.gavedu.comfrom $0.022 endpoints - SSCV ApprovalsCrypto & DeFi
SCV Approvals: active token approvals of a wallet (unlimited/unknown spender detection) for $0.01 USDC via x402
Basescv-agent.onlinefrom $0.0055 endpoints
TickerLayerCrypto & DeFiReturns historical OHLCV bars for one currency pair between two UTC dates, inclusive, at 1, 5 or 15 minute, 1 or 4 hour, or daily size, paged with limit and offset. Priced by the page size requested, in three tiers: up to 100 bars, up to 500 (the default) and up to 1,000. One request covers at most 31 days of 1-minute bars, 90 of 5-minute, 180 of 15-minute, 365 of hourly, 730 of 4-hour and 5,000 o
Baseagents.tickerlayer.comfrom $0.012 endpoints- TThermodynamics and Heat TransferCrypto & DeFi
Carnot limit for a heat engine, refrigerator and heat pump from hot and cold absolute temperatures, with work and heat flows.
BaseSolanaPolygon+1thermo-heat-calc.x402tookit.comfrom $0.028 endpoints - SStableCryptoCrypto & DeFi
List all chains with TVL
BaseSolanastablecrypto.devfrom $0.013 endpoints - AAUROS VerdictCrypto & DeFi
Issuer-prep compliance gate ALLOW / CHALLENGE / BLOCK for an RWA tokenization project. Pay $0.25 USDC to avoid acting blind on a multi‑million desk decision. Indicative — not a CRA rating or trade authorization.
Basegetauros.comfrom $0.1210 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.