# Reference

::::card-grid
:::card{title="Pinecone Nexus API" href="/guides/reference-introduction"}
Programmatic access to Nexus workspaces, contexts, sources, curation, and KnowQL queries.
:::

:::card{title="Authentication" href="/guides/reference-authentication"}
Authenticate to the Nexus API with your Pinecone API key, sent directly or exchanged for a short-lived session token.
:::
::::

## Related pages

- [Account management](./account-management-index.md)
- [Admin](./admin-2-index.md)
- [Admin](./admin-index.md)
- [APIs](./apis-index.md)
- [Architecture](./architecture-index.md)
- [Assistants](./assistants-index.md)
- [Bring Your Own Cloud](./bring-your-own-cloud-index.md)
- [Build an assistant](./build-an-assistant-index.md)
- [Build an integration](./build-an-integration-index.md)
- [Changelog](./changelog-index.md)

# Agent Instructions

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