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summary OpenCode provider notes: browser cookies, local SQLite usage, and parsing.
read_when
Adding or modifying the OpenCode provider
Debugging OpenCode usage parsing or cookie import

OpenCode provider

Data sources

  • Browser cookies from opencode.ai.
  • OpenCode Go usage API at GET https://opencode.ai/zen/go/v1/usage, authenticated by OPENCODE_API_KEY or providers[].apiKey.
  • OpenCode Go local history from ~/.local/share/opencode/opencode.db on macOS and Linux.
  • POST https://opencode.ai/_server with server function IDs:
    • workspaces (def39973159c7f0483d8793a822b8dbb10d067e12c65455fcb4608459ba0234f)
    • subscription.get (7abeebee372f304e050aaaf92be863f4a86490e382f8c79db68fd94040d691b4)

Usage mapping

  • The Go usage API reports usage.rolling/weekly/monthly.percent in percentage units (0...100): 1 means 1%, and 0.5 means 0.5%. Generic dashboard JSON still accepts fractional usage values (0...1).
  • Primary window: rolling 5-hour usage (rollingUsage.usagePercent, rollingUsage.resetInSec).
  • Secondary window: optional weekly usage (weeklyUsage.usagePercent, weeklyUsage.resetInSec).
  • Resets computed as now + resetInSec.

Using OpenCode with Codex or OpenAI

Codex account quota and local token/cost history are separate data sources. The Codex provider reads session and weekly quota from the signed-in account's remote usage endpoint; those percentages do not come from local session logs.

If OpenCode holds your Codex OAuth session, the explicitly enabled External Codex OAuth sources setting can reuse its openai OAuth entry for remote quota. Native Codex credentials take precedence, and an explicit CODEX_HOME prevents external fallback. External credentials stay read-only; stale credentials fail closed, and API-key entries are ignored. See Codex external OAuth sources.

This does not import OpenCode sessions into Codex token or spend totals. The base OpenCode provider tracks its web dashboard, while the local SQLite reader described here selects only opencode-go assistant records for OpenCode Go. Ordinary OpenCode sessions using OpenAI/Codex are not currently included in local cost history. OpenAI API-platform usage is a separate OpenAI provider, not Codex subscription quota.

Notes

  • Responses are text/javascript with serialized objects; parse via regex.
  • Missing workspace ID or rolling usage fields should raise parse errors; omitted weekly usage stays absent.
  • OpenCode web Auto imports Chrome first, then Dia when their cookie stores exist; Keychain preflight stays scoped to each candidate browser. Other browsers stay on Manual Cookie import until CodexBar has an explicit browser selector.
  • Set CODEXBAR_OPENCODE_WORKSPACE_ID to skip workspace lookup and force a specific workspace.
  • Workspace override accepts a raw wrk_… ID or a full https://opencode.ai/workspace/... URL.
  • Cached cookies: Keychain cache com.steipete.codexbar.cache (account cookie.opencode, source + timestamp). Browser import only runs when the cached cookie fails.
  • OpenCode Go unscoped Auto mode tries daily cost history derived from local opencode-go assistant costs first, overlays authoritative API windows when an API key is configured, then falls back through the API and legacy web sources when local history is unavailable. Auto stays web-first when a token account, manual cookie, or workspace override scopes the request, because local history is device-wide.
  • The local monthly window is an estimate anchored at the earliest local row and can drift from the real billing cycle. The local strategy prefers API-reported rolling/weekly/monthly percentages and reset timestamps. When no API key is configured, a cached or manual session cookie can still overlay the legacy web values (plus Zen balance). Both paths keep local daily cost history and never trigger a fresh browser import. When no authoritative overlay is available, the menu and text CLI label the quota as estimated, and JSON includes dataConfidence: "estimated".
  • OpenCode Go cost history chart: opencode.ai has no daily-granularity endpoint, so per-day cost/request buckets come from local opencode-go assistant costs in opencode.db, keyed by device-local calendar day. Successful web usage remains workspace-scoped and is never blended with device-wide local costs, so it does not show cost history. Explicit Web mode never reads the local database either.
  • Each day's bucket also carries a per-model cost breakdown, read from each local assistant message's modelID (the real model behind the constant opencode-go Zen proxy providerID). This lets the shared Cost history chart show a per-model breakdown for OpenCode Go the same way it already does for Claude (see the "Cost usage" section in docs/claude.md). Rows with no modelID are grouped under an "unknown" bucket instead of being dropped.