Peptide Library API gives programmatic access to peptide research profiles, study references, regulatory status and vendor product/price data. Research endpoints work without a key; vendor, product and pricing endpoints require a developer key and are rate-limited.
What can you use it for?
Build a peptide reference widget for your lab notes, a vendor price-compare tool, or a research dashboard with study links. You get full research profiles, regulatory status, study references and vendor price offers. Research endpoints are keyless for quick lookups; vendor and pricing data require a free developer key and are rate-limited. It’s great for search, procurement helpers, or embedding vetted research data into your tools.
API Stats
Health ▼
85
A score out of 100 from our daily tests over the last 30 days, based on error rate, reliability and speed.
Reliability ▼
100%
Share of our daily test calls in the last 30 days that succeeded, averaged over all endpoints of this API.
Error rate ▼
0%
Share of our daily test calls in the last 30 days that failed, averaged over all endpoints of this API.
Pricing ▼
Freemium
Docs list Free Developer: 60/min, 5,000/month; app Pro subscriptions available.
Auth ▼
API key
Sign up for a key and send it as a query parameter or header. The endpoints listed here work without it.
🤖 Robot last checked the docs and pricing 2 hours ago
Research and study endpoints work without a key, but vendor, product and pricing endpoints require a developer key created in the dashboard.
The Free Developer plan is documented as 60 requests/minute and 5,000 requests/month for keyed endpoints; anonymous requests are limited by IP (about 300/min).
You may use the data, but must follow the API terms and show attribution; the site notes the content is for research and education and not medical advice.
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