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Authenticated Access

NH48 and NH52WAV API access

Build against the NH48.info dataset API with a signed-in account and a scoped API key. Access now requires either a monthly plan or an approved nonprofit grant.

Legacy public dataset URLs remain online during the migration window, but authenticated API keys are the supported path for remote apps.
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Monthly access

Production API plan

$19.99/mo

For apps, dashboards, and recurring remote fetches that need stable NH48 and NH52WAV dataset access.

Contact support
Nonprofit access

Request a grant

Nonprofits, volunteer groups, educational projects, and public-interest tools can apply for access. Support can approve with a single-use grant link.

Sign in first so the grant can attach to your NH48.info account.

Plan limits

Choose the smallest plan that matches the workload

Free

NH48 API Free

10,000 requests/mo

For prototypes, personal tools, and low-volume integrations.

60 requests/minute

Production

NH48 API Pro

250,000 requests/mo

For recurring app, dashboard, and analytics usage.

600 requests/minute

Scale

NH48 API Business

2,000,000 requests/mo

For commercial apps and higher-throughput data products.

3,000 requests/minute

Grant

NH48 API Nonprofit

250,000 requests/mo

For approved public-interest, volunteer, education, and nonprofit work.

600 requests/minute

Nonprofit application

Sign in first

Dataset endpoints

Protected datasets
2
Legacy sunset
October 1, 2026
Support
[email protected]

Management endpoints

  • GET /api/v1/me/access-summary
  • POST /api/v1/me/nonprofit-application
  • POST /api/v1/me/keys
  • DELETE /api/v1/me/keys/current

Example request

curl -H "x-api-key: nh48_live_yourpublicid_yoursecret" https://nh48.info/api/v1/datasets/nh48

Migration notes