Four ways to turn ChatGPT web into a coding agent via MCP, bypassing Codex usage caps
alexcovo_eth · x · 2026-09-08
After his earlier post went viral, @criscxuan details four ways to exploit the fact that ChatGPT web tokens and Codex usage are separately metered — wiring MCP into the ChatGPT web app so it can do Codex-style local coding work without burning Codex quota:
- WebCodex: the most complete architecture. ChatGPT connects via MCP to a Server, while a local Runner handles file read/write, Git, tests, Shell, and long-running tasks; supports multi-project/device connections, task status, run logs, human guidance, file transfer, and Computer Use. Users install a Desktop app and connect via OpenAI Secure Tunnel. The tradeoff is complexity (Server, Runner, project registration, Tunnel, tokens/scopes) and security: runshell executes as the Runner's system user, so opening Shell effectively hands that user's command execution rights to the AI.
- DevSpace: also lets ChatGPT operate local projects directly but exposes a smaller default toolset (openworkspace, read, etc.).
- codex-with-chatgpt: a division-of-labor approach — ChatGPT plans, Codex executes, saving quota.
- Mac Developer Bridge: the most aggressive option, handing the entire Mac over to ChatGPT.
The post links the WebCodex repo (yyjeqhc/webcodex, Rust, 389 stars) with Docker deployment and workspace boundary configs.
More from coding & agent
- Xiaomi launches invite-only beta of MiMo Desktop, an agent that ships finished work — teortaxesTex · 2026-09-08
- Coval Raises $28M, Launches First Self-Improving Voice Agents With Phonely's Alma Model — massimosgrelli · 2026-09-08
- EU compliance checks as prepaid MCP tools for agents, from €0.10 per call — jithox_AI · 2026-09-08
- Same prompt, four models, one motorcycle: Blender MCP comparison crowns Astra — a10ondr · 2026-09-08
- Dev wires pre-push hook to run tests, SSH-sign a receipt as a git note — fforres · 2026-09-08
- 21 days to OpenAI DevDay: Codex team tracking multiple launches in 28-page deck — reach_vb · 2026-09-08