opencode/packages/core/src/plugin/provider/openai-codex.ts

42 lines
1.9 KiB
TypeScript

export * as OpenAICodex from "./openai-codex"
// TEMPORARY SEAM (#34765): plugins have no hook into LLM route construction, so
// Codex routing lives in ModelResolver and catalog filtering.
// in OpenAIPlugin, sharing this module. Once the native provider packages land
// (#33689/#33925/#34462) this should collapse into the native OpenAI provider.
// The eligibility rules mirror V1's CodexAuthPlugin allowlist; models.dev has no
// plan-eligibility data for OpenAI today, but models other vendors' subscriptions
// as dedicated providers (e.g. zai-coding-plan) - a future openai-chatgpt-plan
// provider entry could replace the hardcoded rules with catalog data.
/** ChatGPT-plan requests must target the codex backend instead of the public API. */
export const baseURL = "https://chatgpt.com/backend-api/codex"
const methodIDs: readonly string[] = ["chatgpt-browser", "chatgpt-headless"]
/** Structural credential shape so both core and plugin-facing credential types fit. */
type CredentialLike = {
readonly type: string
readonly methodID?: string
readonly metadata?: Record<string, unknown> | undefined
}
export const isChatGPT = (credential: CredentialLike | undefined) =>
credential?.type === "oauth" && credential.methodID !== undefined && methodIDs.includes(credential.methodID)
export const accountID = (credential: CredentialLike | undefined) => {
if (!isChatGPT(credential)) return undefined
const value = credential?.metadata?.accountID
return typeof value === "string" ? value : undefined
}
const allowed = new Set(["gpt-5.5", "gpt-5.3-codex-spark", "gpt-5.4", "gpt-5.4-mini"])
const disallowed = new Set(["gpt-5.5-pro", "gpt-5.6"])
/** Which API model ids a ChatGPT subscription may call through the codex backend. */
export const eligible = (apiID: string) => {
if (allowed.has(apiID)) return true
if (disallowed.has(apiID)) return false
const match = apiID.match(/^gpt-(\d+\.\d+)/)
return match ? Number.parseFloat(match[1]) > 5.4 : false
}