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OpenAI ships strict structured outputs for parallel tool use
Parallel tool calls now validate against JSON schema before execution — a whole class of agent failures disappears.
OpenAIJul 1, 20264 min
Source Summary
Strict mode extends to parallel tool calls: every call is schema-validated pre-execution, with a repair pass on failure. Available in the API and Codex.
Practical Implication
Delete your hand-rolled tool-call validators. Turn on strict mode and move validation effort to eval coverage instead.
Agent-Ready Context
OpenAI strict structured outputs now cover parallel tool calls. Schema-validated pre-execution with one repair pass. Remove custom validators; rely on strict mode + evals.
Labels
Tool UseCoding AgentsModel SelectionCodexChatGPTImprove Agent ReliabilityPlan Feature
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