OpenAI Codex July Update: MCP Tool-Search by Default, Multi-Agent Delegation Controls, and Rollout Token Budgets
Releasebot·medium signal
Codex's July release makes MCP tool search the default (improving discovery while preserving older-model compatibility) and adds configurable rollout token budgets that track usage across agent threads and abort a turn when exhausted. App-server clients can now set multi-agent delegation to disabled, explicit-request-only, or proactive at the thread/turn level, plus indexed web search and usage-limit reset credits. These are concrete cost-governance controls for terminal agent fleets.