> For the complete documentation index, see [llms.txt](https://docs.concurrence.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.concurrence.com/api-reference/readme/classic.md).

# Classic

Generated Classic API operations and models for organization-scoped users, services, conversations, tools, data access, and simulations.

The Classic API scopes resources to an organization and acts on behalf of an authenticated user. It covers users, services, conversations, Tools/Actions, Dynamic Behaviors, simulations, and data access. Supported conversation paths include text, voice notes, and realtime interactions.

The child pages in this section are generated from the [Classic OpenAPI specification](https://api.amigo.ai/v1/openapi.json). Select the resource and operation you need; use the Models page to inspect shared schema definitions.

Start with [Classic Authentication](https://docs.concurrence.com/developer-guide/getting-started/authentication), [Regions & Endpoints](https://docs.concurrence.com/developer-guide/getting-started/regions-and-endpoints), and [Classic SDKs](https://docs.concurrence.com/developer-guide/classic-api/sdks). The API key-to-user-token exchange is different from using a Platform workspace key.

For incremental conversation events, completion, and error handling, follow the [Classic conversation guide](https://docs.concurrence.com/developer-guide/classic-api/core-api/conversations). Generated JSON schemas alone do not explain how to consume an NDJSON or WebSocket stream.

{% content-ref url="/pages/xeTm226uVfQa8aU6u77u" %}
[Concurrence API](/api-reference/change-logs/amigo-api.md)
{% endcontent-ref %}


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# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
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