#wallet

Tell whether a domain is a known crypto phishing or scam site before a wallet or user connects to it — using MetaMask's canonical eth-phishing-detect blocklist, the same list that protects millions of MetaMask users, read keyless and live. It runs the real detection logic: an exact and subdomain match against the blocklist and allowlist, plus a Levenshtein fuzzy match against high-value lookalike targets to catch typosquats like "myetherwaliet.com" or "app-wallet-uniswap.org". Check a domain or URL for a verdict (blocked, allowed, fuzzy or unknown) with the reason, search the 190,000-entry blocklist, or read its stats. The dApp-connection safety layer every wallet, browser extension, Telegram bot and security tool needs to warn users before they sign. Live, lightly cached.

api.oanor.com/phishingcheck-api

A live ERC-20 token metadata directory aggregated from the curated, on-chain token lists that wallets and dApps actually trust — Uniswap Labs Default, CoinGecko, 1inch, Aave and the Optimism Superchain list — read keyless from their public endpoints. Resolve any token contract address on any chain to its canonical name, symbol, decimals and logo; list a curated set in full (paged, filterable by chain); search across every list by symbol or name; and discover a token's bridged addresses on other chains. The metadata layer every wallet, swap UI and portfolio tracker needs before it can safely display or transact a token. Live, short cache only — nothing stored.

api.oanor.com/tokenlist-api

Inspect any Safe (formerly Gnosis Safe) multisig smart wallet, keyless. For any Safe address on any supported chain it returns the multisig configuration — the owner signers, the signature threshold (the M-of-N), the current nonce, the enabled modules, guard and contract version — and the Safe token balances (native + ERC-20, with symbols and amounts). The multisig-inspection layer for DAO treasuries, security, due-diligence, wallet and dashboard tooling. Live, nothing stored. Backed by the open Safe Transaction Service.

api.oanor.com/safe-api

Live audit of the token approvals (allowances) a crypto wallet has granted, and the risk of the contracts it has approved to spend its tokens — powered by the public GoPlus Security data, no key, nothing stored. Token approvals are the single most common way wallets get drained: once you approve a contract to move a token, a malicious or compromised spender can take it whenever it likes. This is the allowance-hygiene layer — the data behind tools like revoke.cash. The approvals endpoint lists every token a wallet has approved, who it approved (the spender contract), how much was approved and when, and whether that spender is flagged as malicious, trusted or unverified, together with a risk summary counting the dangerous approvals to revoke. The contract endpoint profiles a single spender contract before you approve it — its name, whether it is open-source, its creator, deploy time and risk tags. The chains endpoint lists the 40-plus supported blockchains. Catch wallet-draining allowances before they cost a user everything. This is the approval / allowance-risk cut — distinct from the token-contract-security, scam-detection and on-chain APIs in the catalogue.

api.oanor.com/approvalsecurity-api

Live on-chain data from the Algorand blockchain (ALGO), a fast carbon-negative pure-proof-of-stake Layer 1, served straight from the public AlgoNode indexer and algod APIs — no key, nothing cached. The account endpoint returns any address's state: its ALGO balance, participation status (online/offline for staking), pending rewards, the Algorand Standard Assets (ASAs) it holds with their amounts, and how many apps it has created. The asset endpoint returns the on-chain registry entry for any ASA — its name, unit, decimals, total supply, creator and URL, so you can resolve USDC, USDt and thousands of tokens. The transactions endpoint returns the account's most recent transactions with the type, counterparty, amount, fee, round and time. The network endpoint returns the live chain state: the last round, the round time, and the total and online ALGO supply. Everything is read live from AlgoNode, nothing stored. This is the Algorand on-chain layer for any wallet, explorer, payments, DeFi or analytics app. Distinct from the XRP Ledger, Stellar, TRON, Aptos, EVM and Solana on-chain APIs and from price feeds — this is Algorand account state, ASA holdings, asset registry, transactions and ledger health. 4 endpoints, no key on our side.

api.oanor.com/algorand-api

Live on-chain data from the Aptos blockchain (APT), a high-throughput Move-based Layer 1, served straight from the official public Aptos fullnode REST API — no key, nothing cached. The account endpoint returns any address's state: its sequence number, authentication key, APT balance and how many on-chain resources it holds. The balance endpoint returns the balance of APT or any coin or fungible asset for an address, handling both the classic coin standard and the newer fungible-asset standard in one call. The resources endpoint lists the Move resource types an account holds — its coins, stores, staking and module data — the structural view of what lives at an address. The transactions endpoint returns the account's most recent transactions with the version, hash, entry function, success flag, gas used and time. The network endpoint returns the live chain state: chain id, the latest ledger version and block height, the epoch and the ledger timestamp. Everything is read live from the fullnode, nothing stored. This is the Aptos on-chain layer for any wallet, explorer, payments, gaming or analytics app. Distinct from the XRP Ledger, Stellar, TRON, EVM and Solana on-chain APIs and from price feeds — this is Aptos account state, balances, Move resources, transactions and ledger health. 5 endpoints, no key on our side.

api.oanor.com/aptos-api

Live on-chain data from the XRP Ledger (XRPL), the decentralized blockchain behind XRP, served straight from public XRPL nodes by JSON-RPC — no key, nothing cached. The account endpoint returns any address's core state: its XRP balance, transaction sequence, the number of objects it owns, and its account flags and domain — the genesis-era account rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh holds tens of thousands of XRP. The balances endpoint returns the full wallet: the XRP balance plus every issued-currency trustline (token or stablecoin) the account holds, with the issuer, currency and amount, decoding hex currency codes to readable tickers. The transactions endpoint returns the account's most recent ledger activity — payments, DEX offers, trustline changes — each with its hash, type, amount, fee, result and time. The server endpoint returns the state of the ledger itself: the latest validated ledger index and age, the base and per-object XRP reserves, the current fee and the node software version — the network health a wallet or explorer needs. Everything is read live from the XRPL, nothing stored. This is the XRP Ledger on-chain layer for any wallet, explorer, exchange, payments or analytics app. Distinct from EVM and Solana on-chain APIs and from price feeds — this is XRPL account state, token balances, transactions and ledger health. 4 endpoints, no key on our side.

api.oanor.com/xrpl-api

Live Solana blockchain data, read straight from a public Solana RPC node — no key, nothing cached. Where EVM chains use 0x addresses, Solana uses base58 keys, and this reads them directly. The balance endpoint returns any wallet's SOL balance (in lamports and SOL) along with the account's program owner, whether it is executable and its rent epoch. The network endpoint returns the live state of the chain: the current epoch and how far through it the cluster is, the absolute slot and block height, the running transactions-per-second, the cumulative transaction count and the node health — Solana runs at thousands of transactions per second. The transactions endpoint returns a wallet's most recent transaction signatures with the slot, block time, success or failure and an explorer link. It reads Solana mainnet live. This is the account-and-network layer every Solana wallet, explorer, dashboard or dapp needs. Live from the chain, nothing stored. Distinct from EVM balance, token and transaction APIs — this is Solana on-chain data. 4 endpoints.

api.oanor.com/solana-api

Live crypto token prices by contract address — no key, nothing cached. Unlike price APIs keyed on a coin slug, this prices a token by its on-chain contract address on its chain, exactly what you have when a token comes out of a wallet, a DEX pair or a transaction. The price endpoint returns the current USD price, symbol, decimals, a confidence score and the timestamp for one or many tokens at once, addressed as chain:address (ethereum:0xA0b8…, a Solana mint, etc.) or as coingecko:slug — USD Coin resolves to about $1.00 and Wrapped Ether to its live price, in one batched call. The historical endpoint returns a token's price at any past moment by Unix timestamp. The chart endpoint returns a price series over a span and period, so you can plot or back-test. It spans every chain DefiLlama indexes — Ethereum, Solana, BSC, Base, Arbitrum and dozens more — including long-tail tokens a slug-based API will not have. This is the address-based price layer every wallet, portfolio tracker, DEX tool and crypto-accounting app needs to value arbitrary tokens. Live from DefiLlama, nothing stored. Distinct from coin-slug price and market-cap APIs — this prices tokens by contract address, across chains. 4 endpoints.

api.oanor.com/tokenprice-api

Live Ethereum Name Service resolution — the phone book of web3, no key, nothing cached. It turns a human .eth name into the wallet address behind it and back again, and reads the on-chain profile records the owner has set. The resolve endpoint takes a name like vitalik.eth and returns the Ethereum address, the avatar, the primary-name flag, the resolver contract, the content hash (for decentralised websites) and every text record the owner published — Twitter, GitHub, Reddit, Discord, Telegram, email, website and description — plus any multi-chain wallet addresses: vitalik.eth resolves to 0xd8dA…96045 with Twitter @VitalikButerin and GitHub vbuterin. The reverse endpoint does the opposite — give it any Ethereum address and it returns that address's primary ENS name and the same profile, so a bare 0x… becomes a human identity. The records endpoint returns just the profile text records for a name. This is the name-resolution and on-chain-profile layer every wallet, dapp, block explorer, payment and web3 app needs: address to name and name to address, with the owner's verified social links. Live from the Ethereum Name Service, nothing stored. Distinct from raw-RPC and token-metadata APIs — this is ENS naming and profile data. 4 endpoints.

api.oanor.com/ens-api

Live native-coin balance for any EVM wallet address across the major chains as an API, read straight from each network's public JSON-RPC node. For any 0x address it returns the native balance (in coin units and in wei), the transaction count (nonce), and whether the address is a smart contract. Check one chain, or fan out across every supported chain at once to see where a wallet holds funds — Ethereum, Polygon, BNB Smart Chain, Arbitrum, Optimism, Base and Avalanche. The wallet-balance and address-lookup layer every wallet app, portfolio tracker and dashboard needs. Live, no key, no cache. Distinct from gas-fee and price APIs — this is on-chain address balances.

api.oanor.com/walletbalance-api

Validate cryptocurrency wallet addresses before you send funds or store them. Check an address against a specific coin — Bitcoin (legacy base58check and bech32 SegWit), Ethereum (with EIP-55 checksum), Litecoin, Dogecoin, Bitcoin Cash, XRP, Cardano, Tron, Monero and 100+ others — or let it auto-detect the likely currency across the most popular coins. Optionally restrict to mainnet or testnet. Catches typos, wrong-network mistakes and malformed addresses. Pure local validation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. Built for payment and checkout forms, exchanges and wallets, withdrawal validation and KYT pre-checks. Distinct from blockchain-data and market-price APIs.

api.oanor.com/cryptoaddr-api

Work with BIP39 mnemonic seed phrases — the 12-to-24-word recovery phrases used by crypto wallets. Generate a phrase at a chosen strength (128–256 bits) in any of 9 wordlist languages, validate a phrase, convert between a phrase and its raw entropy in both directions, and derive the 512-bit BIP39 seed (with an optional passphrase) used for HD-wallet key derivation. Pure local computation — no key, no third-party service. Note: intended for development, testing and education; generate seeds for real funds offline / client-side, never trust a remote API with production keys. Live, nothing stored. 7 endpoints. Distinct from market-data, password and 2FA tools.

api.oanor.com/bip39-api