Codex

openai_base_url = "https://api.pioneer.ai/v1"
model = "pioneer/auto"

Set up this machine's Codex CLI to use Pioneer, including a fresh local model catalog.
  Do exactly this, in order:
  1. Read my Pioneer API key from the PIONEER_API_KEY environment variable. If it is not set, stop and ask me for it — never
  guess or hardcode a key, and never print the key value.
  2. Determine this user's absolute home directory (e.g. run `echo "$HOME"`). Call it HOME_ABS. Everywhere below, use the
  literal absolute path — do NOT write "~" or "$HOME" into any file, because Codex does not expand them in config.toml.
  3. Fetch the Pioneer model list:
     curl -fsS https://api.pioneer.ai/v1/models -H "Authorization: Bearer $PIONEER_API_KEY"
     If the request fails (non-200), show me the status and body and STOP without changing any files.
  4. From the JSON response, take ONLY the top-level "models" array (not "data"). Wrap it as {"models": [ ... ]} and write it
  pretty-printed to:
     HOME_ABS/.codex/model-catalogs/pioneer.json
     Create HOME_ABS/.codex/model-catalogs/ if needed. Overwrite the file if it exists.
  5. Back up HOME_ABS/.codex/config.toml to config.toml.bak (skip if config.toml doesn't exist yet). Then ensure config.toml
  has exactly these Pioneer settings, written as TOP-LEVEL keys plus the [model_providers.pioneer] table (substitute HOME_ABS
  into the catalog path):
     model = "pioneer/auto"
     model_provider = "pioneer"
     model_reasoning_effort = "medium"
     model_catalog_json = "HOME_ABS/.codex/model-catalogs/pioneer.json"
     [model_providers.pioneer]
     name = "Pioneer"
     base_url = "https://api.pioneer.ai/v1"
     wire_api = "responses"
     supports_websockets = false
     Preserve any unrelated existing sections (e.g. [projects.*], [tui.*], other providers). Only set/replace the keys above
  and the [model_providers.pioneer] table. Make sure model_catalog_json is a top-level key, NOT nested inside
  [model_providers.pioneer].
  6. Report how many models were written to the catalog, confirm the config keys are set, and remind me to restart Codex so
  the /model picker reloads.