# API Reference

::::card-grid
:::card{title="Overview" href="/guides/api-reference-overview"}
The Credal API v0 provides a simple interface for sending messages to simple agents using static API keys.
:::

:::card{title="Fetch the status of an agent response" href="/guides/api-reference-v-1-agents-fetch-response"}
:::

:::card{title="Send a message to an agent" href="/guides/api-reference-v-1-agents-send-message"}
:::

:::card{title="OAuth Setup" href="/guides/api-reference-v-1-o-auth-setup"}
:::

:::card{title="Overview" href="/guides/api-reference-v-1-overview"}
API v1 brings fully featured agent messaging to the Credal API.
:::
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## Related pages

- [API Reference](./api-reference-2-index.md)
- [Credal | Documentation](../index.md)
- [Getting Started](./getting-started-index.md)
- [Platform](./platform-index.md)
- [Agent Builder](./platform-agent-builder.md)
- [Copilots](./api-reference-2-copilots.md)
- [Overview](./api-reference-overview.md)
- [What is Credal?](./getting-started-introduction.md)
- [Fetch the status of an agent response](./api-reference-v-1-agents-fetch-response.md)
- [Quickstart](./getting-started-quickstart.md)

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