ZV-2026-1906 · 2026-10-07 · learn.microsoft.com
learn.microsoft.com: Type of language on microsoft_code_sample_search changed string → string|null.
breaking
What changed
Type of language on microsoft_code_sample_search changed string → string|null. Type of query on microsoft_docs_search changed string → string|null.
What to do
If your agents call learn.microsoft.com, pin the new snapshot, patch the affected call sites, and let a green contract check confirm the fix. If you don't use the changed tools, nothing is required, but the rest of the ecosystem just learned about it at the same moment you did.
The redline
− string + string|null microsoft_code_sample_search − string + string|null microsoft_docs_search − Search for code snippets and examples in official Microsoft Learn documentation. This tool… + Search for code snippets in official Microsoft Learn documentation. Returns relevant code … microsoft_code_sample_search − Fetch and convert a Microsoft Learn documentation webpage to markdown format. This tool re… + Fetch complete content from a Microsoft documentation page and convert to markdown. ## Wh… microsoft_docs_fetch − Search official Microsoft/Azure documentation to find the most relevant and trustworthy co… + Search official Microsoft/Azure documentation for the most relevant and trustworthy conten… microsoft_docs_search