MAX data.
MIN drama. Zero dead zones on the roadmap.

# send a one-time passcode
curl -X POST https://api.signalpeak.example/v2/otp \
  -H "Authorization: Bearer $PEAK_KEY" \
  -d '{"to":"+85255550100","channel":["sms"],"ttl":300}'

# 201 created
{"id":"otp_77c2","status":"delivering"}

# search available numbers
curl -G https://api.signalpeak.example/v2/numbers \
  -H "Authorization: Bearer $PEAK_KEY" \
  --data-urlencode "country=HK&type=mobile&pattern=5555"

# 200 ok
{"items":[{"e164":"+85255550142","state":"available"}]}

# provision an eSIM profile
curl -X POST https://api.signalpeak.example/v2/esim \
  -H "Authorization: Bearer $PEAK_KEY" \
  -d '{"iccid":"89441120300011223344","plan":"iot_5mb"}'

# 202 accepted
{"job":"esim_a11d","eta_s":12}

# subscribe to signed events
curl -X POST https://api.signalpeak.example/v2/webhooks \
  -H "Authorization: Bearer $PEAK_KEY" \
  -d '{"url":"https://you.example/hooks","events":["esim.ready"]}'

# 201 created — signature HMAC-SHA256
{"id":"wh_91","status":"active"}