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OSS2026-09-19 · source-backed
It's the customer-run half of OpenAI's Secure MCP Tunnel, letting a private or localhost MCP server reach ChatGPT, Codex, the Responses API and Agent Builder without exposing it publicly. 422 stars, v0.0.14 tagged September 1, pushed this morning. GitHub Pre-1.0 numbering and daily commits, but it's the sanctioned path rather than a community workaround.
Each link below shares sources, entities, or timing with this story.
Three things happened this month that only make sense together. Agent Plugins 1.0 shipped co-signed by six competitors: AWS, Anysphere, Microsoft, OpenAI, Vercel and Google (GitHub Changelog). It makes skills-plus-MCP bundles portable across clients. OpenAI's August 11 Codex c...
The 60 commits between rust-v0.155.0-alpha.4 and alpha.6, published September 15 with an empty release body as every Codex alpha has, include configuring the Guardian prompt template (#45516), Guardian reviewers routed through ThreadManager for inline parents (#45518), reviewe...
A standalone macOS and Windows desktop beta released September 14, moving the open-source agent out of the VS Code extension slot; the releases page shows Desktop v0.0.26 on September 11, v0.0.27 on September 13 and v0.0.28 on September 15, so it's shipping daily (GitHub). It...
Published September 7, it puts OpenAI Codex in the agent picker with a copy-ready ~/.codex/config.toml panel pointing Codex CLI and Desktop at Manifest over the Responses API (GitHub). Two compatibility fixes make it work: Responses-API role: "developer" instruction messages f...
Waishnav/devspace (4,247 stars, v1.0.8 August 25) runs a local Node server exposing read, edit, search and shell execution over MCP, reached through a reverse proxy tunnel like Cloudflare or ngrok, with password-gated owner approval per client. The pitch is turning ChatGPT int...
OpenAI Devs announced on August 26 that WebMCP works in the ChatGPT desktop app's built-in browser and in ChatGPT Sites, so ChatGPT and Codex can call a site's declared tools directly. WebMCP is an experimental web standard adding navigator.modelContext to the browser, letting...
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