# CTX — Center for Computational Toxicology and Exposure APIs

**Canonical:** https://apis.io/apis/epa/ctx-center-for-computational-toxicology-and-exposure-apis/  
**Provider:** EPA — U.S. Environmental Protection Agency — https://apis.io/providers/epa/  
**Base URL:** https://api-ccte.epa.gov  
**Documentation:** https://comptox.epa.gov/ctx-api/docs/

CTX — Center for Computational Toxicology and Exposure APIs is one of 137 APIs that [EPA — U.S. Environmental Protection Agency](https://apis.io/providers/epa/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Government, Chemical Safety, and Toxicology. The published artifact set on APIs.io includes API documentation and a GitHub repository.

Chemical, hazard, bioactivity, and exposure data covering tens of thousands of chemicals. Includes Chemical, Bioactivity, Hazard, Exposure, and ToxRefDB endpoints.

## Machine-readable artifacts (7)

- **Documentation** — https://comptox.epa.gov/ctx-api/docs/
- **GitHubRepository** — https://github.com/USEPA/ccte-api-chemical
- **GitHubRepository** — https://github.com/USEPA/ccte-api-bioactivity
- **GitHubRepository** — https://github.com/USEPA/ccte-api-hazard
- **GitHubRepository** — https://github.com/USEPA/ccte-api-exposure
- **SDKs** — https://pypi.org/project/ctx-python/
- **SDKs** — https://github.com/USEPA/ctxR

## Other EPA — U.S. Environmental Protection Agency APIs (12)

- [EPA Facility Registry Service (FRS) API](https://apis.io/apis/epa/epa-facility-registry-service-frs-api/)
- [EPA TRI (Toxics Release Inventory) Web Service](https://apis.io/apis/epa/epa-tri-toxics-release-inventory-web-service/)
- [EPA ATTAINS Web Services](https://apis.io/apis/epa/epa-attains-web-services/)
- [EPA WATERS — Watershed Assessment, Tracking & Environmental Results](https://apis.io/apis/epa/epa-waters-watershed-assessment-tracking-environmental-results/)
- [EPA Grants API](https://apis.io/apis/epa/epa-grants-api/)
- [EPA Insect Repellents API](https://apis.io/apis/epa/epa-insect-repellents-api/)
- [EPA e-Manifest Hazardous Waste Tracking](https://apis.io/apis/epa/epa-e-manifest-hazardous-waste-tracking/)
- [EPA System of Registries (SoR)](https://apis.io/apis/epa/epa-system-of-registries-sor/)
- [EPA — U.S. Environmental Protection Agency Account Type Codes API](https://apis.io/apis/epa/epa-account-type-codes-api/)
- [EPA — U.S. Environmental Protection Agency Accounts API](https://apis.io/apis/epa/epa-accounts-api/)
- [EPA — U.S. Environmental Protection Agency Air Emission Testing API](https://apis.io/apis/epa/epa-air-emission-testing-api/)
- [EPA — U.S. Environmental Protection Agency Allowance Compliance API](https://apis.io/apis/epa/epa-allowance-compliance-api/)

## Tags

Government, Chemical Safety, Toxicology

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/epa/ctx-center-for-computational-toxicology-and-exposure-apis/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/epa/.