{"openapi":"3.1.0","info":{"title":"Crypto Address Validator API","version":"1.0.0","description":"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.","contact":{"name":"PremiumApi","url":"https://www.oanor.com/by/premiumapi"}},"servers":[{"url":"https://api.oanor.com/cryptoaddr-api","description":"oanor gateway"}],"tags":[{"name":"Validate"},{"name":"Reference"},{"name":"Meta"}],"components":{"securitySchemes":{"oanorKey":{"type":"apiKey","in":"header","name":"x-oanor-key","description":"Get your key at https://www.oanor.com/developer/keys"}}},"security":[{"oanorKey":[]}],"paths":{"/v1/validate":{"get":{"operationId":"get_v1_validate","tags":["Validate"],"summary":"Validate a crypto wallet address","description":"","parameters":[{"name":"address","in":"query","required":true,"description":"Wallet address","schema":{"type":"string"},"example":"1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa"},{"name":"currency","in":"query","required":false,"description":"Coin symbol (btc, eth, …) or auto","schema":{"type":"string"},"example":"btc"},{"name":"network","in":"query","required":false,"description":"mainnet|testnet","schema":{"type":"string"}}],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"valid":true,"address":"1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa","currency":"btc"},"meta":{"timestamp":"2026-06-02T16:51:52.634Z","request_id":"10b236f0-f3fa-43ce-88e6-fb7eb3189466"},"status":"ok","message":"Validate a crypto address","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/coins":{"get":{"operationId":"get_v1_coins","tags":["Reference"],"summary":"Auto-detect currency set","description":"","parameters":[],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"note":"Auto-detection tries these; pass any of 100+ symbols explicitly as ?currency= (e.g. btc, eth, ltc, doge, bch, xrp, ada, trx, xmr, …).","auto_detect":["btc","eth","ltc","doge","bch","dash","xrp","xlm","trx","ada","xmr","zec","etc","bnb","neo","qtum","xtz","atom","algo","dot"]},"meta":{"timestamp":"2026-06-02T16:51:52.747Z","request_id":"d17d8173-c031-4eec-aa9e-bfdbfabd8596"},"status":"ok","message":"Auto-detect currency set","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}},"/v1/meta":{"get":{"operationId":"get_v1_meta","tags":["Meta"],"summary":"Spec","description":"","parameters":[],"security":[{"oanorKey":[]}],"responses":{"200":{"description":"OK","content":{"application/json":{"example":{"data":{"auth":"none upstream; this gateway requires x-api-key","name":"Crypto Address Validator API","note":"Validate cryptocurrency wallet addresses. /v1/validate?address=...&currency=btc (or eth, ltc, doge, …; omit or use auto to auto-detect across popular coins). Checks base58check / bech32 (Bitcoin) and EIP-55 checksum (Ethereum), with optional ?network=mainnet|testnet. /v1/coins lists the auto-detect set. Instant, nothing stored. Distinct from blockchain-data and market-data APIs.","source":"Local address validation (multicoin-address-validator) — no key, no upstream","endpoints":3},"meta":{"timestamp":"2026-06-02T16:51:52.830Z","request_id":"8a8798a5-01ae-4264-b09c-a603891b47f2"},"status":"ok","message":"Meta","success":true}}}},"401":{"description":"Missing or invalid x-oanor-key header"},"402":{"description":"Active subscription required"},"429":{"description":"Rate-limit or monthly quota reached"},"502":{"description":"Upstream did not respond"}}}}},"x-oanor-pricing":[{"slug":"free","name":"Free","price_cents_month":0,"monthly_call_quota":1180,"rps_limit":2,"hard_limit":true},{"slug":"starter","name":"Starter","price_cents_month":360,"monthly_call_quota":12000,"rps_limit":8,"hard_limit":true},{"slug":"pro","name":"Pro","price_cents_month":2320,"monthly_call_quota":150000,"rps_limit":20,"hard_limit":true},{"slug":"mega","name":"Mega","price_cents_month":5920,"monthly_call_quota":770000,"rps_limit":50,"hard_limit":true}],"x-oanor-marketplace-url":"https://www.oanor.com/api/cryptoaddr-api"}