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Service Protocol Price Category Health Latency Source
Dutch address search and geocoding from the official BAG register via PDOK: free... https://opendata402.com/v1/address/nl x402 $0.0010 tools/search healthy 285ms bazaar
Dutiful - Base block number https://dutiful.work/api/utilities/base-block-number x402 — on-chain data healthy — self-registered
Dutiful Company Report https://dutiful.work/api/pay-demo x402 $3.00 research healthy 214ms self-registered
E-Commerce Schema Fix Generator https://agents.varsity54.com/fix x402 $3.50 tools/seo healthy 588ms self-registered
E-commerce full store catalog: every current product variant of one Shopify stor... https://scraplingdata.xyz/v1/ecom/catalog x402 $0.25 media/images healthy 940ms bazaar
E-commerce product price + stock lookup: search 180+ public Shopify brand stores... https://scraplingdata.xyz/v1/ecom/product x402 $0.01 tools/search healthy 911ms bazaar
EBI OLS4 ontology term search (keyless). POST {q|query}/{rows?}. Empty -> 400 no... https://x402-v2-mint-ols-ontology-search.vercel.app/v1/ols-ontology-search x402 $0.02 tools/search healthy 776ms bazaar
EBI PRIDE proteomics project search (keyless). POST {q|query|keyword}/{pageSize?... https://x402-v2-mint-pride-project-search.vercel.app/v1/pride-project-search x402 $0.02 tools/search healthy 557ms bazaar
ECB Exchange Rates (~30 currencies) — via FiatDock Marketplace https://fiatdock.com/s/svc_cae69d21-bf69-46cf-8437-d490f087204c x402 $0.0010 finance healthy 182ms self-registered
ECB euro FX reference rates https://agent-data-tools.grit-77.workers.dev/ecb-fx-rates?currency=USD x402 $0.01 finance healthy 387ms self-registered
EIP-1559 base fee and priority fee percentiles (p25/p50/p90) for Base and/or Eth... https://grokzilla.shop/api/skills/gas-price x402 $0.0010 crypto/transactions healthy 479ms bazaar
EIP-1559 gas fee oracle before an agent sends a tx: next base fee, slow/standard... https://beggar-bot-demand.beggarbot.workers.dev/v1/gasfee x402 $0.02 crypto/defi healthy — self-registered
EIP-7702 delegation & sweeper check for EVM wallets across 8 chains (Ethereum, B... https://sweeper-check.nextill-pos.workers.dev/v1/check x402 $0.01 crypto/wallet healthy 423ms bazaar
EMBL-EBI ChEMBL molecule search: ChEMBL ID, preferred name, maximum clinical pha... https://api.healthtravel-api.workers.dev/api/health/chEMBL-bioactive-molecules x402 $0.0020 tools/search healthy 184ms bazaar
EMBL-EBI GWAS Catalog genome-wide association hits for a gene symbol (REST API v... https://api.healthtravel-api.workers.dev/api/health/gwas-catalog-associations x402 $0.0020 tools/search healthy 432ms bazaar
ENCODE genomics experiment/search (keyless). POST {q|query|searchTerm}/{limit?}.... https://x402-v2-mint-encode-search.vercel.app/v1/encode-search x402 $0.02 tools/search healthy 645ms bazaar
ENS + Basename resolve (forward and reverse) https://ai-policy-kit.moneymaker-ai.workers.dev/api/ens-resolve x402 $0.0010 crypto healthy 142ms self-registered
ENS Name ⇄ Address Resolver — via FiatDock Marketplace https://fiatdock.com/s/svc_4b83cc36-6f13-4acc-8975-0aa034ca18f8 x402 $0.0010 data healthy 172ms self-registered
ENS Resolver https://x402.professorsausages.com/ens-resolve/name/vitalik.eth x402 $0.0010 Blockchain healthy 678ms self-registered
ENS name resolution https://api.gadgethumans.com/ens L402 $0.0020 crypto/onchain-data healthy — self-registered
ENS name resolution (x402) https://api.gadgethumans.com/ens x402 $0.0020 crypto/onchain-data healthy — self-registered
ENS-style agent name register (Nock) https://x402-checker.nock-for-mak.workers.dev/name x402 $0.05 tools/utility healthy 260ms self-registered
EOA vs contract, ETH + USDC balance, transaction count and activity level — stra... https://402.com.tr/api/x402/address-intel x402 $0.02 crypto/transactions healthy 895ms bazaar
EPA ECHO CWA facility search (keyless). POST {p_fn|facility_name} and/or geo fil... https://x402-v2-mint-epa-echo-facilities.vercel.app/v1/epa-echo-facilities x402 $0.02 tools/search healthy 710ms bazaar
EPA Facility Registry by State https://proxy.suverse.io/v1/data/suverse-regulatory-epa-frs-facilities x402 $0.06 regulatory healthy 190ms self-registered
EPA Greenhouse Gas Reporting Program (GHGRP) reported emissions for one facility... https://api.tradeenergy-api.workers.dev/api/energy/epa-flight-emissions x402 $0.0020 tools/search healthy 961ms bazaar
EPA Toxics Release Facilities by State https://proxy.suverse.io/v1/data/suverse-regulatory-epa-tri-facilities x402 $0.07 regulatory healthy 355ms self-registered
ERC-20 Token Metadata (5 chains) — via FiatDock Marketplace https://fiatdock.com/s/svc_d1cd7b55-85da-41b1-9092-0ce05f507559 x402 $0.0010 data healthy 291ms self-registered
ERC-20 Token Metadata — via FiatDock Marketplace https://fiatdock.com/s/svc_f636a681-c447-45d8-9edf-96122610a19e x402 $0.0020 data healthy 210ms self-registered
ERC-20 Transfer events on Base via eth_getLogs - the newest transfers of a token... https://mintintel.35-171-220-195.sslip.io/v1/base/erc20-transfers/:token x402 $0.0020 crypto/transactions healthy 501ms bazaar
ERC-20 Transfer events on Ethereum via eth_getLogs - the newest transfers of a t... https://mintintel.35-171-220-195.sslip.io/v1/eth/erc20-transfers/:token x402 $0.0020 crypto/transactions healthy 550ms bazaar
ERC-20 Unsigned Calldata Decoder — Approvals & Allowance Risk Flags https://vm5-openapi-x402.onrender.com/v1/erc20-calldata-preflight x402 $0.01 developer-tools/web3 healthy 469ms self-registered
ERC-20 allowance / approval check (8 chains) https://ai-policy-kit.moneymaker-ai.workers.dev/api/erc20-allowance x402 $0.0010 crypto healthy 667ms self-registered
ERC-20 allowance on Base via allowance(owner, spender) (eth_call) - how much a s... https://mintintel.35-171-220-195.sslip.io/v1/base/allowance/:token/:owner/:spender x402 $0.0010 crypto/wallet healthy 573ms bazaar
ERC-20 allowance on Base: how much a spender may transfer from an owner, whether... https://onchaincheck.dev/base/allowance x402 $0.0050 crypto/transactions healthy 183ms bazaar
ERC-20 allowance on Ethereum via allowance(owner, spender) (eth_call) - how much... https://mintintel.35-171-220-195.sslip.io/v1/eth/allowance/:token/:owner/:spender x402 $0.0010 crypto/wallet healthy 700ms bazaar
ERC-20 allowance on Ethereum: how much a spender may transfer from an owner, whe... https://ca-tax-api-mainnet.lxtap.workers.dev/eth/allowance x402 $0.0050 crypto/transactions healthy 115ms bazaar
ERC-20 allowance on OP Mainnet: how much a spender may transfer from an owner, w... https://ca-tax-api-mainnet.lxtap.workers.dev/optimism/allowance x402 $0.0050 crypto/transactions healthy 142ms bazaar
ERC-20 allowance on OP Mainnet: how much a spender may transfer from an owner, w... https://onchaincheck.dev/optimism/allowance x402 $0.0050 crypto/transactions healthy 205ms bazaar
ERC-20 allowance on Polygon PoS: how much a spender may transfer from an owner, ... https://ca-tax-api-mainnet.lxtap.workers.dev/polygon/allowance x402 $0.0050 crypto/transactions healthy 178ms bazaar
ERC-20 allowance on Polygon PoS: how much a spender may transfer from an owner, ... https://onchaincheck.dev/polygon/allowance x402 $0.0050 crypto/transactions healthy 103ms bazaar
ERC-20 approval check on Base: how much can spender move from owner? owner=0x..&... https://kr-x402-mvp.kgy5612.workers.dev/crypto/allowance x402 $0.0020 crypto/defi healthy 327ms bazaar
ERC-20 approval risk scanner for wallets: flags unlimited allowances and unverif... https://agentforge-taupe.vercel.app/v1/approval-scan x402 $0.01 crypto/wallet healthy 345ms bazaar
ERC-20 metadata, proxy detection and free DEX liquidity data for a token on Base... https://xhagents.xyz/api/token-check x402 $0.10 crypto/defi healthy 703ms bazaar
ERC-20 token balance for a wallet against one token contract, on Ethereum, from ... https://www.x402financialdata.com/token-balance/:address x402 $0.01 crypto/balances healthy 224ms bazaar
ERC-20 token balance for any Base wallet - USDC, WETH, USDT or any token - via b... https://mintintel.35-171-220-195.sslip.io/v1/base/erc20-balance/:address/:token x402 $0.0010 crypto/balances healthy 569ms bazaar
ERC-20 token balance for any Ethereum wallet - USDC, WETH, USDT or any token - v... https://mintintel.35-171-220-195.sslip.io/v1/eth/erc20-balance/:address/:token x402 $0.0010 crypto/balances healthy 677ms bazaar
ERC-20 token balance of a Base mainnet address, incl. symbol, decimals, balance_... https://x402-data-api.sigrunner.workers.dev/chain/token-balance x402 $0.01 crypto/balances healthy 855ms self-registered
ERC-20 token balance of a Base mainnet address, incl. symbol, decimals, balance_... https://api.greyridgesignals.ai/chain/token-balance x402 $0.0020 crypto/balances healthy 620ms bazaar
ERC-20 token balance of a wallet on Base (USDC or any other token), formatted wi... https://aether-x402.vercel.app/v1/base/erc20-balance x402 $0.0020 crypto/balances healthy 423ms bazaar