arcsecond.io
Science & Math
Multiple astronomy data sources
No keyCORSHTTPS
RCSB PDB
3D structures of proteins and nucleic acids
Checked 4 days ago: not responding
API key
Not required
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Failing · 0/100
What our checks found
- Health score
- 0/100
- Reliability
- 0%
- Average latency
- 1218ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for RCSB PDB. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://data.rcsb.org/ENDPOINT" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Where this listing comes from
Aggregated from one public source (public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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RCSB PDB — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is RCSB PDB free to use?
RCSB PDB is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.
Does RCSB PDB need an API key?
No. We called RCSB PDB on 2026-09-18 with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.
Can I call RCSB PDB from browser JavaScript?
Not directly. RCSB PDB did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is RCSB PDB still working?
Not at our last check on 2026-09-18. RCSB PDB did not respond successfully, which is why it is marked as down here. This may be temporary; we re-check on a schedule and the badge above reflects the most recent run.
Is RCSB PDB available over HTTPS?
Yes. RCSB PDB serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.