npub Decoder

Convert npub identifiers to hex pubkeys — 5 sats

About

Decode a Nostr npub1... identifier to a canonical 64-character hex pubkey. Useful when APIs and tooling require hex format.

Try It

5 sats via L402.

npub identifier

API Usage

curl -X POST https://maximumsats.com/api/npub-decode \
  -H "Content-Type: application/json" \
  -d '{"npub":"npub17td9xj68m0lqtq9y9h3mwkx2jsge630d8r55utumurq4dze3c42sdav95p"}'

Sample Response

{
  "ok": true,
  "npub": "npub17td9xj68m0lqtq9y9h3mwkx2jsge630d8r55utumurq4dze3c42sdav95p",
  "hex_pubkey": "3bf0c63fcb93463407af97a5e5ee64fa883d107ef9e558472c4eb9aaaefa459d"
}

Also available via MCP at maximumsats.com/mcp