# SCEDC FDSN Web Services

**Canonical:** https://apis.io/apis/caltech/scedc-fdsn/  
**Provider:** California Institute of Technology — https://apis.io/providers/caltech/  
**Base URL:** https://service.scedc.caltech.edu/fdsnws  
**Documentation:** https://scedc.caltech.edu/

SCEDC FDSN Web Services is one of 11 APIs that [California Institute of Technology](https://apis.io/providers/caltech/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Seismology, Earthquakes, FDSN, Open Data, and Research Data. The published artifact set on APIs.io includes an OpenAPI specification, sample payloads, and API documentation.

The Southern California Earthquake Data Center, operated by the Caltech Seismological Laboratory, exposes FDSN-standard seismic web services — fdsnws-event, fdsnws-station and fdsnws-dataselect. Verified live 2026-08-19 with real queries returning SCEDC catalog earthquakes and CI-network station metadata, plus verified 204 no-data and structured 400 error behaviour. The best-versioned surface in Caltech's estate.

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/caltech/refs/heads/main/openapi/caltech-scedc-fdsn-openapi.yml
- **Example** — https://raw.githubusercontent.com/api-evangelist/caltech/refs/heads/main/examples/caltech-scedc-event-example.yml
- **WADL** — https://service.scedc.caltech.edu/fdsnws/dataselect/1/application.wadl
- **Documentation** — https://service.scedc.caltech.edu/

## Other California Institute of Technology APIs (10)

- [CaltechDATA REST API](https://apis.io/apis/caltech/caltechdata-rest/)
- [CaltechDATA OAI-PMH](https://apis.io/apis/caltech/caltechdata-oai/)
- [CaltechAUTHORS REST API and OAI-PMH](https://apis.io/apis/caltech/caltechauthors/)
- [Caltech Library Feeds](https://apis.io/apis/caltech/library-feeds/)
- [IRSA Virtual Observatory APIs (Caltech/IPAC)](https://apis.io/apis/caltech/irsa-vo/)
- [NED Table Access Protocol (Caltech/IPAC)](https://apis.io/apis/caltech/ned-tap/)
- [NASA Exoplanet Archive TAP (Caltech/IPAC)](https://apis.io/apis/caltech/exoplanet-archive-tap/)
- [Caltech Shibboleth Identity Provider (InCommon)](https://apis.io/apis/caltech/identity-federation/)
- [Caltech Library Guides (Springshare tenancy)](https://apis.io/apis/caltech/libguides-springshare/)
- [EBSCO Link Resolver (Caltech instance)](https://apis.io/apis/caltech/ebsco-resolver/)

## Tags

Seismology, Earthquakes, FDSN, Open Data, Research Data, Time Series

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/caltech/scedc-fdsn/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/caltech/.