Authentication

Alphanume offers both unauthenticated (free-tier) access and API key–authenticated access, depending on your usage needs.

Free Tier (No API Key)

You can begin using the API without an API key.

This is intended for evaluation and light usage. Free-tier requests may:

• Return a limited number of records

• Include response delays for certain datasets

• Be subject to rate limits

No changes to the request structure are required.

API Key Access

For higher throughput or unrestricted access, requests can be authenticated using an API key.

When you upgrade:

• An API key is generated and emailed to you

• Free-tier limits are removed or expanded

• Requests are prioritized where applicable

To authenticate a request, append your API key as a query parameter:

params = {
    "ticker": "AAPL",
    "date": "2025-12-01",
    "api_key": "alp_yourapikeyhere"
}

All authenticated requests follow the same pattern:

GET /v1/{endpoint}?param1=value&api_key=alp_

Notes

• API keys are generated and emailed to you after signup

• Keys should be kept private

• Keys are tied to your account and usage tier