API · /bip39-api

BIP39 Mnemonic API

healthy 4,450 Subscribers

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.

#bip39 #mnemonic #crypto #wallet #seed-phrase #developer-tools

api.oanor.com/bip39-api

Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

/api/bip39-api/openapi.json

/api/bip39-api/llms.txt

Discovery: GET /api/index.json lists every API.

BIP39 Mnemonic API — live data on the oanor API marketplace

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 72 ms; Server probes · 24h
Subscribers: 4,450; active
Total calls: 140; last 7 days

Full status page → · 28 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

1,200 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
1,200 calls/month
2 req/sec
9 languages, 12-24 words
No credit card

Starter

€3.80 /month

13,000 calls / month
8 requests / second
Hard cap (429 above quota, no overage)
13k calls/month
8 req/sec
Entropy + seed derivation
Email support

Pro

€23.40 /month

152,000 calls / month
20 requests / second
Hard cap (429 above quota, no overage)
152k calls/month
20 req/sec
Wallet / dev tooling
Priority support

Mega

€59.40 /month

780,000 calls / month
50 requests / second
Hard cap (429 above quota, no overage)
780k calls/month
50 req/sec
Platform scale
Dedicated SLA

Built by

PremiumApi

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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for BIP39 Mnemonic API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call BIP39 Mnemonic API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for BIP39 Mnemonic API?

Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.

How much does BIP39 Mnemonic API cost?

BIP39 Mnemonic API has a free tier with 100 calls / month. Paid plans start at €3.80 / month with higher quotas and faster rate limits.

Can I cancel my subscription anytime?

Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.

Is BIP39 Mnemonic API GDPR-compliant?

All requests to BIP39 Mnemonic API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Playground

Custom headers

Language: Client:

GET /v1/meta

Spec

Playground

Custom headers

Language: Client:

Code snippets

curl https://api.oanor.com/bip39-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/bip39-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/bip39-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);

import requests
r = requests.get(
    "https://api.oanor.com/bip39-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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BIP39 Mnemonic API

API health

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Related APIs

WEMIX API

Monad API

Superposition API

Matchain API

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