BIP21 URI Normalizer

Canonicalize bitcoin: URIs for deterministic output — 4 sats

About

Normalize Bitcoin payment URIs (bitcoin:..., BIP21) into canonical formatting. This endpoint keeps the payment intent intact while returning deterministic output fields for integrations and tests.

Try It

4 sats via L402.

Bitcoin URI (BIP21)

API Usage

curl -X POST https://maximumsats.com/api/bip21-normalize \
  -H "Content-Type: application/json" \
  -d '{"uri":"BITCOIN:bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kygt080?label=Coffee%20Shop&amount=0.00100000&message=Thanks"}'

Sample Response

{
  "ok": true,
  "input_uri": "bitcoin:bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kygt080?label=Coffee%20Shop&amount=0.00100000&message=Thanks",
  "normalized_uri": "bitcoin:bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kygt080?amount=0.001&label=Coffee+Shop&message=Thanks",
  "changed": true,
  "amount_sats": 100000
}

Also available via MCP as bip21_normalize at maximumsats.com/mcp