CodexData

Not affiliated with OpenAI. An independent, open mirror and dataset for the OpenAI Codex client.

Static JSON served from Cloudflare Workers: a mirror of the official OpenAI Codex model catalog (what the Codex client itself fetches from chatgpt.com/backend-api/codex/models) with snapshots and a change feed, a per-tag registry of the Codex client's feature flags (official facts extracted from the client's own sources, layered with human-curated Chinese annotations), the JSON Schema of Codex's ModelInfo, plus (upcoming) curated third-party model profiles that clients render into Codex's ModelInfo format.

Endpoints (v1)

Path	What
`/v1/index.json`	Discovery: endpoints, last sync summary, licenses.
`/v1/codex/models.json`	Latest official Codex catalog envelope `{"models":[…]}`, unmodified. `ETag` + `If-None-Match` supported.
`/v1/codex/meta.json`	When it was fetched/checked, client version used, content hash, source plan label.
`/v1/codex/snapshots/index.json`	Recent immutable snapshots; each at `/v1/codex/snapshots/<sha256>.json`.
`/v1/codex/changes.json`	Models added / removed / changed, newest first.
`/v1/schema/codex-model-info/latest.json`	JSON Schema of the Codex client's `ModelInfo` rejection rules; per verified tag at `/<tag>.json`, tag list at `/index.json`. Static asset, updated per verified tag.
`/v1/features/codex/latest.json`	Feature-flag registry per verified Codex tag: key, lifecycle stage, default, official rustdoc + /experimental menu copy, legacy aliases (e.g. `telepathy` → `chronicle`), cross-tag history, and community-curated annotations (zh today; translations welcome). Per tag at `/<tag>.json`, tag list at `/index.json`. Static asset, updated per verified tag; field reference in `docs/DATASETS.md`.
`/healthz`	200 when the mirror has a catalog fetched within 24h; 503 otherwise.

Caveats

The Codex catalog reflects one dedicated ChatGPT account's view (plan label in meta.json); other plans may see a different list.
It is fetched with the latest published @openai/codex client version. Older clients ignore unknown fields.
If the upstream is unreachable, the last successfully fetched catalog keeps being served.

Licenses

Code: MIT. Profile data, feature-flag registry + annotations: CC-BY-4.0 (derived from openai/codex sources, Apache-2.0, reproduced with LICENSE + NOTICE in the repository). /v1/codex/* bodies are served as-is from OpenAI; CodexData grants no license over them.