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Which API does this use?

This guide selects Responses through wire_api = "responses". The base URL is https://api.asterwise.dev/v1. The client builds the full endpoint: https://api.asterwise.dev/v1/responses. The model name chooses AsterCode or AsterWork, not the protocol. Use the base URL in the configuration below, rather than the full endpoint.

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Configuration

Set your key in the terminal:
Install Codex CLI, then edit ~/.codex/config.toml. Merge these settings with existing sections; do not duplicate [features] or [model_providers.aster]. Keep top-level settings such as model above the table headings:

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Start Codex

Run codex from the same terminal where you set the key. Ask a simple question about your project, then check Usage in AsterWise. This configuration disables web search and multi-agent features. Before starting, add model_context_window at the top level using the value in the app’s Setup snippet. A custom model name does not tell Codex the service’s context capacity.

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Next steps

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Official reference

Configuration reviewed on September 16, 2026. See Codex configuration reference. Tool updates can change behavior; this source review does not establish compatibility for every version or feature.