---
title: "National Institute of Standards and Technology (@usnistgov)"
description: "The US agency for measurement science, standards and technology."
account: "usnistgov"
---

# National Institute of Standards and Technology

The US agency for measurement science, standards and technology.

## APIs

4 public APIs with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/usnistgov/feed.md

- [Dioptra REST API](https://skmtc.dev/usnistgov/apis/dioptra-rest-api.md): Machine learning workflows: manage experiments, models, plugins, jobs, queues and artifacts
- [MIDAS Group Management Service (GMS) – Convention GRP0](https://skmtc.dev/usnistgov/apis/midas-group-management-service-gms-convention-grp0.md): Groups: create and delete groups, list them, and manage membership lists
- [Resource Metadata Management API](https://skmtc.dev/usnistgov/apis/resource-metadata-management-api.md): Dataset discovery: search NERDm records, versions and release sets, plus usage metrics for datasets and files
- [PDR Resource Identifier Resolver Service](https://skmtc.dev/usnistgov/apis/pdr-resource-identifier-resolver-service.md): Resources: resolve ARK identifiers to dataset metadata, files, versions and landing pages