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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
844 results- Sscan.convrgent.aiCrypto & DeFi
Paid equivalent of /api/aeo/scan — scanner for AI search visibility (AEO, GEO) and agent readiness. Triple score + AI Identity Card + top issues covering JSON-LD Schema.org, meta tags, llms.txt, robots.txt, sitemap, and agent-discovery signals for ChatGPT, Perplexity, Google AI Overviews, Bing Copilot. $0.01 in USDC (Base or Solana) — Bazaar-indexable variant; the free version at /api/aeo/scan sta
BaseSolanascan.convrgent.aifrom $0.011 endpoint - Ppayerproof-production.up.railway.appCrypto & DeFi
Verified on-chain USDC revenue stats for any x402 seller address on Base: total received, transfer count, unique payers, top-payer concentration, largest transfers. Window up to 720h (30d), incremental coverage.
Basepayerproof-production.up.railway.appfrom $0.012 endpoints - Ppastebin.0000402.xyzCrypto & DeFi
Pay $0.01 USDC to store up to 100 KB of text or code. Returns a token for free retrieval anytime via GET /paste/{token}. Network: Base Mainnet. Each request stores one text or code blob and returns a retrieval token, making it useful for notes, code snippets, logs, and debug-output sharing.
Basepastebin.0000402.xyzfrom $0.011 endpoint - WWicked MemoryCrypto & DeFi
Semantic search over an agent's own persistent memories (wallet-scoped). Free with a valid x-api-key.
Basememory.wickedapi.comfrom $0.0011 endpoint - DDecode a JWTCrypto & DeFi
Decode a JSON Web Token WITHOUT verifying its signature and return the header, payload and signature. A structurally malformed token is rejected before payment. Never trust a decoded payload you have not verified.
Basejwt.openverbs.comfrom $0.0042 endpoints - AAlgono InferenceCrypto & DeFi
Low-cost OpenAI-compatible Responses API inference over Solana USDC x402.
Solanainference.algono.cofrom $0.0021 endpoint - Iident.halowerk.comCrypto & DeFi
Creates a five-minute inbound SMS lease through a configured licensed provider, polls received messages, and releases the number upstream on cancellation, expiry or failed x402 settlement. Twilio is supported directly; an HTTPS bearer-token lease provider can also implement the documented generic contract. Messages and lease metadata are removed after expiry.
Baseident.halowerk.comfrom $0.0061 endpoint - HHash dataCrypto & DeFi
Compute a cryptographic digest (SHA-2, SHA-3, BLAKE2, and legacy SHA-1/MD5/RIPEMD-160) of some data. The input may be utf8/hex/base64/base64url and the digest is returned as hex/base64/base64url.
Basehash.openverbs.comfrom $0.0022 endpoints - x402 Trust ScanCrypto & DeFi
Batch EVM token contract-risk check: up to 10 addresses in one paid call (half the per-token price), on any one chain (base, ethereum, arbitrum, optimism, polygon, bnb). Same output as /v1/check. Query: ?addresses=0x1,0x2,...&chain=base
SolanaBasegdzlcxskuhupymyxywzm.supabase.cofrom $0.0018 endpoints
DeepCounterfeitCrypto & DeFiDeepCounterfeit pre-buy check for 8QtbrC9d3BezyCwzBFUQbNsWJGte7ckrZ7HWcn81pump (risk signals, informational only, not financial advice)
BaseSolanaPolygon+1deepcounterfeit.comfrom $0.011 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 - BBase PulseCrypto & DeFi
Run before sending ETH or USDC or paying gas, to confirm the wallet really has enough. Never trust a balance remembered from earlier in a chat. Reads a wallet's ETH and native USDC balance on Base directly from the chain, at one block.
Basebase-pulse-1021990235790.us-central1.run.appfrom $0.012 endpoints - WWalletTriageCrypto & DeFi
WalletTriage — real-time wallet risk check: dangerous ERC20 approvals cross-referenced with a live exploit threat feed. Returns risk_score (0-100), risk_level and actionable findings.
Baseapi.wallettriage.comfrom $0.011 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
MACH BaseCrypto & DeFiVerify an onchain payment or investigate a failed Base transaction in one call with transaction, receipt, success status, confirmations, gas and fee context.
Baseapi.mach.galleryfrom $0.0052 endpoints
BotPay NFT MintCrypto & DeFiMint a BotPay NFT on Base after an x402 USDC payment.
BaseSolanaapi.botpay.networkfrom $0.013 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- WWicked IdentityCrypto & DeFi
Check whether a wallet currently holds a valid, unexpired Wicked Identity agent-liveness assertion.
Baseverify.wickedapi.comfrom $0.0011 endpoint - Ccode402 Chain DataCrypto & DeFi
Latest Ethereum block height
Baseverify.code402.devfrom $0.0051 endpoint - 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 - Pprotocol-tvl-brief.x402supply.comCrypto & DeFi
Compact DeFi protocol brief by slug or name: current TVL, 1d/7d/30d TVL change, TVL by chain, category, chains, audit links, fees and revenue for 24h/7d/30d where available, DefiLlama URL. Data by DefiLlama. Not financial advice.
Baseprotocol-tvl-brief.x402supply.comfrom $0.011 endpoint
ProofableCrypto & DeFiCreate a signed proof for a wallet that anyone can verify offline.
Baseapi.proofable.mefrom $0.011 endpoint- ZZeroWorker MCP Trust GateCrypto & DeFi
MCP security checks and feedback for users and developers. Choose paid access without reports, or ongoing free access within limits: POST /v1/client-token; 1 check/24h + 1 for a previous-use report. Check URL/DNS, metadata/schema/auth, OSV/CVE risk and catalog drift before connecting. Verified owners can read consented weekly reports. ALLOW/BLOCK/UNKNOWN uses caller-confirmed versions. No tool exe
BaseSolanazeroworker-mcp-preflight-api.zeroworker-lab.workers.devfrom $0.0051 endpoint - Xx402.fablerlabs.comCrypto & DeFi
Scan text for accidentally-committed secrets (API keys, tokens, private keys) before you publish it.
Basex402.fablerlabs.comfrom $0.0014 endpoints - Xx402-v2-mint-dictionary-define.vercel.appCrypto & DeFi
Dictionary definitions via api.dictionaryapi.dev (keyless). Word → meanings (partOfSpeech + definitions), phonetics, sourceUrls.
Basex402-v2-mint-dictionary-define.vercel.appfrom $0.0021 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 - PPort-Dwell Congestion IndexCrypto & DeFi
Port/chokepoint congestion index (daily & live, computed from public AIS)
Basex402-portdwell.nobodytools.comfrom $0.011 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 - CCount tokensCrypto & DeFi
Count the LLM tokens in text for a given model or encoding — exact for OpenAI and open models (Llama, Mistral, Qwen, Gemma, DeepSeek, Command-R); labelled-approximate for Claude & Gemini.
Basetokens.openverbs.comfrom $0.0041 endpoint
DevX Token Safety & HoneypotCrypto & DeFiHoneypot check, rug check and token safety check: is this token safe or a scam? Token verdict (safe/caution/danger), 0-100 token risk score and reasons. Chains: Base, Ethereum, Arbitrum, Optimism, Polygon, Robinhood Chain, Solana. Honeypot detector (EVM): simulated buy/sell with real tax. Rug check incl. Solana: owner, mint, blacklist, pause, proxy, mint/freeze authority, liquidity, holders, age.
BasePolygonArbitrum+2tokencheck.madebydevx.comfrom $0.011 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.