Large Transaction Monitoring services
Payable large transaction monitoring endpoints for agents, ranked by measured reliability.
notary-solana.forgemesh.io
notary-solana.forgemesh.io
Provides notarization services for Solana blockchain transactions or data.
www.api-xpay.com
www.api-xpay.com
Payment quote with amount, asset, and merchant wallet
coinflip402.vercel.app
coinflip402.vercel.app
Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails.
api.onesource.io
api.onesource.io
ENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPC
x402.ottoai.services
x402.ottoai.services
Trade and transaction history for a user's Otto AI Safe account — swaps, bridges, deposits, withdrawals with timestamps and explorer links.
x402.ottoai.services
x402.ottoai.services
Where DeFi capital is flowing — TVL rankings, fastest-growing vs bleeding protocols, chain-by-chain breakdown, and per-protocol deep dives. Track capital rotation and protocol health. Powered by DefiLlama.
defi.hugen.tokyo
defi.hugen.tokyo
Stablecoin distribution by blockchain — total circulating USD-pegged value on every supported chain. Track stablecoin flows and chain-level liquidity. Accepts USDC payments on Base and Solana
api.aurelianflo.com
api.aurelianflo.com
Exact-match OFAC wallet screening and crypto wallet sanctions check for sanctioned digital currency addresses. Screens one wallet address against Treasury's public SDN advanced XML and returns hit or clear status, asset coverage, sanctioned entity metadata, sanctions programs, list source, listing date, and a manual-review signal for onchain payment and treasury controls.
defi.hugen.tokyo
defi.hugen.tokyo
Stablecoin market data — circulating supply by peg type, chain distribution, market cap rankings, and issuer info for 100+ stablecoins. Accepts USDC payments on Base and Solana
coil.trade
coil.trade
START HERE — the cheapest answer we sell ($0.001) and the first call most agents make. Is crypto risk-on right now? Whether the BTC 200-day master gate is open or closed, the LONG/CASH state of the BTC and ETH sleeves, and a one-line verdict, all evaluated on UTC daily closes by a long-only rules engine. Poll it every cycle; when the gate flips, step up to /api/board/regime for the equity tape and /api/board/indices for the index ladder ($0.005 each). Research, not advice.
chain.cyberwarex.com
chain.cyberwarex.com
Transaction lookup and decode on any major EVM chain. Turns a raw tx hash into agent-readable facts: success or failure status, block number, sender and recipient, native value transferred, gas used, fee in native token and USD, and every ERC-20 transfer decoded with token symbol, decimals and human-readable amount. Returns found=false for an unknown hash instead of erroring.
twitr.sh
twitr.sh
Read a connected X/Twitter account's private surfaces: bookmarks and bookmark folders, notifications, and DM history. Billed per item returned; readable only for handles this wallet connected.
api.robinx.io
api.robinx.io
Pollable tape of follow/unfollow transitions by Robinhood Chain principal accounts on X — each followed handle crossed with its measured caller record
trust.nsgoods.org
trust.nsgoods.org
Address-risk screening for a raw wallet address across EVM chains + Solana — signed JSON with OFAC (Chainalysis oracle, EVM-only) + GoPlus hard/soft flags. Signals only, no decision imposed. USDC pay-per-call on Base mainnet.
api.oblique.markets
api.oblique.markets
Use when an agent needs base usdc transfer check. Returns Verify a Base mainnet transaction moved USDC: decodes all USDC Transfer logs from the receipt and reports settled=true only for a mined, successful tx with at least one transfer. $0.004.
api.insumermodel.com
api.insumermodel.com
Signed attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 37 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, and agent standing (ERC-8004 registration, ERC-7710 delegation validity with revocation proof). A verifiable boolean, never raw balances. Up to 10 conditions per pay-per-call request. Pay in USDC on Base, Polygon, Arbitrum, Arc, or Solana.
blockrun.ai
blockrun.ai
Get the global leaderboard of smart wallets
whale.lonestaroracle.xyz
whale.lonestaroracle.xyz
Large on-chain transaction monitor — whale movements on Base, Ethereum, and Robinhood Chain with AI pattern analysis
api.oblique.markets
api.oblique.markets
Use when an agent wants to know what a wallet has been doing before paying it, accepting payment from it or following it. Returns Recent transactions, token transfers, DEX swaps, NFT activity and internal transactions for an EVM wallet on Base or Ethereum, with a heuristic risk score. $0.03.
ozmium.org
ozmium.org
The tradeable Gains Network (gTrade) crypto pair universe on Base: on-chain pairIndex, symbol, and the FULL leverage band per pair- maxLeverage, minLeverage (10x on forex, 2x on metals; below it the contract reverts), and openable, which is false for the ~300 listings the venue currently refuses to open at any size. USDC-collateralized synthetic exposure- any pair trades without holding the asset. GET /v1/risk/pairs.
x402-store.dgdb.workers.dev
x402-store.dgdb.workers.dev
Live feed of freshly-detected malicious addresses on Base — address-poisoning seeders caught via zero-value transfer sprays, updated continuously by our on-chain collector. Poll ?since=<unix> to ingest only new threats into your agent's blocklist. Deterministic, evidence-backed, machine-readable.
kya.lonestaroracle.xyz
kya.lonestaroracle.xyz
KYA / counterparty check for a wallet (and optional name): OFAC + wallet risk + signed verdict
agent.connskill.com
agent.connskill.com
Wallet/contract state on 5 EVM chains in one call: native balance, nonce, EOA-or-contract (EIP-7702-aware), ERC-20 balances with symbol and decimals
ens-resolver.underscoredone.com
ens-resolver.underscoredone.com
Look up an ENS name or an Ethereum address and get back the matching one, automatically figuring out which direction you need.