Problem

Sub-agents (Pi embedded agent) cannot use openai/gpt-5.2 or openai/gpt-5.2-pro with OAuth Pro subscription tokens.

Error:

HTTP 401: You have insufficient permissions for this operation. 
Missing scopes: api.responses.write.

Root Cause

• Sub-agents use the Responses API (/v1/responses) via openai-responses provider
• The main session uses Chat Completions API (/v1/chat/completions) — works fine
• OAuth tokens from ChatGPT Pro subscription ($200/mo) only have scopes: openid, profile, email, offline_access
• The api.responses.write scope is not available via the Codex OAuth client (app_EMoamEEZ73f0CkXaXp7hrann)
• Confirmed with both browser OAuth and device-code auth flow — same scopes

Expected Behavior

Sub-agents should work with OpenAI OAuth Pro tokens, either by:

1. Requesting api.responses.write scope in the OAuth client registration
2. Falling back to Chat Completions API when Responses API returns 401/scope error
3. Using openai-codex-responses provider (chatgpt.com/backend-api) which works with the same token

Environment

• OpenClaw: 2026.2.22-2
• OpenAI subscription: Pro ($200/mo)
• Auth mode: OAuth (device-code + browser)
• codex CLI: 0.104.0

Workaround

Use openai-codex/gpt-5.3-codex for sub-agents (works via chatgpt.com/backend-api).
Main session can use openai/gpt-5.2 normally.