# UW Token Authentication Web Service (TAWS)

**Canonical:** https://apis.io/apis/university-of-washington/token-authentication-web-service/  
**Provider:** University of Washington — https://apis.io/providers/university-of-washington/  
**Base URL:** https://taws.s.uw.edu:716/token/v2  
**Documentation:** https://iam-tools.u.washington.edu/apis/tawsv2/

UW Token Authentication Web Service (TAWS) is one of 32 APIs that [University of Washington](https://apis.io/providers/university-of-washington/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Identity, Authentication, Tokens, IAM, and Enterprise Web Services. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

UW-IT's Token Authentication Web Service V2 — the institution-operated issuer for the AccessToken credential that the Student and IdCard Web Services accept. Three paths; the OpenAPI is published by UW at iam-tools.u.washington.edu. The runtime listens on a non-standard port on a restricted network and is not reachable from the public internet.

## Operations (5)

| Method | Path | Summary |
|---|---|---|
| GET | `/crn/{user}` | The Crn endpoint returns the user's crn list. |
| PUT | `/crn/{user}` | The Crn endpoint sets the user's crn list. |
| DELETE | `/crn/{user}` | The Crn endpoint deletes the user's crn list. |
| GET | `/preauth/{user}` | The Preauth endpoint returns the user's available authentication factors. |
| POST | `/auth/{user}` | The Auth endpoint performs second-factor authentication for a user. |

## Machine-readable artifacts (2)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/university-of-washington/refs/heads/main/openapi/university-of-washington-token-authentication-web-service-v2-openapi.yml
- **Documentation** — https://iam-tools.u.washington.edu/apis/tawsv2/

## Other University of Washington APIs (12)

- [Identity Registration Web Service (IRWS)](https://apis.io/apis/university-of-washington/identity-registry-web-service/)
- [UW-IT Enterprise Web Services Registry](https://apis.io/apis/university-of-washington/enterprise-web-services/)
- [UW Groups Web Service (GWS)](https://apis.io/apis/university-of-washington/groups-web-service/)
- [UW Shibboleth Identity Provider (InCommon)](https://apis.io/apis/university-of-washington/identity-federation/)
- [ResearchWorks Repository (DSpace REST + OAI-PMH)](https://apis.io/apis/university-of-washington/researchworks-dspace/)
- [Student Web Service (SWS) Campus API](https://apis.io/apis/university-of-washington/university-of-washington-campus-api/)
- [IdCard Web Service (IdCardWS) Card API](https://apis.io/apis/university-of-washington/university-of-washington-card-api/)
- [Student Web Service (SWS) College API](https://apis.io/apis/university-of-washington/university-of-washington-college-api/)
- [Student Web Service (SWS) Course API](https://apis.io/apis/university-of-washington/university-of-washington-course-api/)
- [Student Web Service (SWS) Curriculum API](https://apis.io/apis/university-of-washington/university-of-washington-curriculum-api/)
- [Student Web Service (SWS) Degree API](https://apis.io/apis/university-of-washington/university-of-washington-degree-api/)
- [Student Web Service (SWS) Degree Audit API](https://apis.io/apis/university-of-washington/university-of-washington-degreeaudit-api/)

## Tags

Identity, Authentication, Tokens, IAM, Enterprise Web Services

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/university-of-washington/token-authentication-web-service/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/university-of-washington/.