feat(ai): support SystemModelMessage[] in system and instructions properties #10924
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lgrammel
changed the title
nicoalbanese
approved these changes
Dec 6, 2025
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Background
For fine grained cache control (Anthropic), system prompts need to be split into multiple system messages (see #10914 ).
Summary
SystemModelMessage[]insystemproperty onPrompt(breaking change on tool call repair functions)SystemModelMessage[]in agent instructionsManual Verification
examples/ai-core/src/agent/anthropic-cache-instruction.tstwice and check requestFuture Work
Instruction, that is an alias forstring | SystemModelMessage | SystemModelMessage[]Related Issues
Resolves #10914
Builds on #10635
Relates to #10329