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EMS quickstart ​

Request signed entropy from the Light Rider cloud in a few minutes.

1. Get an API key ​

Create or copy an API key from the EMS account page. Keep it private.

2. Install the official Python SDK ​

bash
pip install lightrider

Python 3.9 or newer is required.

3. Configure the cloud client ​

bash
export LR_EMS_ENDPOINT="https://ems.lightriderinc.com"
export LR_EMS_API_KEY="lr_..."
python
from lightrider import EntropyClient, Policy

with EntropyClient() as client:
    client.fetch_verifier()
    response = client.get_bytes(32, policy=Policy.QUANTUM_VERIFIED)

print(response.bytes_.hex())
print(response.receipt.quality_score)
print(response.receipt.contributing_sources)

fetch_verifier() pins the active signing key. Later calls reject invalid receipts before returning bytes.

REST example ​

bash
curl -X POST https://ems.lightriderinc.com/v1/entropy/request \
  -H "Authorization: Bearer $LR_EMS_API_KEY" \
  -H "content-type: application/json" \
  -d '{"bytes":32,"policy":"quantum_verified"}'

The response contains bytes_hex and a signed receipt.

Limits ​

  • Request size: 1 to 65,536 bytes.
  • Authentication: Authorization: Bearer <key>.
  • Default policy: highest_quality.

Next: Policies, Multi-source extraction, and Receipts.