Finding / codex
2026-07-01-codex-codex-0-142-2-stable-ships-mcp-tools-now-use-tool-search
Codex 0.142.2 stable ships: MCP tools now use tool search by default when supported (channel: tagged-release, 2026-06-25). Operator consequence: Runtime behavior change for anyone wiring MCP servers into Codex: tool discovery now defaults to tool-search rather than dumping the full tool list. Re-verify that your MCP-backed workflows still resolve the tools you expect against your model/provider; older models retain compatibility but discovery path differs. Upgrade to 0.142.2+ to get it. Full receipted detail lives in harvest/watchlist.md.
Receipt
Finding metadata
Run: 2026-07-01-weekly-digest-2026-06-24_2026-07-01-frontier-v0
Finding ID: 2026-07-01-codex-codex-0-142-2-stable-ships-mcp-tools-now-use-tool-search
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Primary links, including exact changelog lines when available.
Versioned source: run artifact