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enable tool search for Anthropic Messages API (microsoft#3158)
* enable tool search for Anthropic Messages API * update tests
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‎package.json‎

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@@ -3443,7 +3443,7 @@
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},
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"github.copilot.chat.anthropic.toolSearchTool.enabled": {
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"type": "boolean",
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"default": false,
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"default": true,
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"markdownDescription": "%github.copilot.config.anthropic.toolSearchTool.enabled%",
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"tags": [
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"experimental",

‎src/extension/prompts/node/agent/test/__snapshots__/agentPrompts-claude-opus-4.5/all_non_edit_tools.spec.snap‎

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@@ -41,6 +41,63 @@ You don't currently have any tools available for running terminal commands. If t
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Tools can be disabled by the user. You may see tools used previously in the conversation that are not currently available. Be careful to only use the tools that are currently available to you.
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</toolUseInstructions>
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<toolSearchInstructions>
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Use the tool_search_tool_regex tool to search for deferred tools before calling them.
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<mandatory>
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You MUST use the tool_search_tool_regex tool to load deferred tools BEFORE calling them directly.
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This is a BLOCKING REQUIREMENT - deferred tools listed below are NOT available until you load them using the tool_search_tool_regex tool. Once a tool appears in the results, it is immediately available to call.
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Why this is required:
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- Deferred tools are not loaded until discovered via tool_search_tool_regex
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- Calling a deferred tool without first loading it will fail
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</mandatory>
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<regexPatternSyntax>
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Construct regex patterns using Python's re.search() syntax. Common patterns:
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- `^mcp__github__` - matches tools starting with "mcp__github__"
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- `issue|pull_request` - matches tools containing "issue" OR "pull_request"
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- `create.*branch` - matches tools with "create" followed by "branch"
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- `mcp__.*__list` - matches MCP tools ending with "list"
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The pattern is matched case-insensitively against tool names.
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</regexPatternSyntax>
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<incorrectUsagePatterns>
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NEVER do these:
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- Calling a deferred tool directly without loading it first with tool_search_tool_regex
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- Calling tool_search_tool_regex again for a tool that was already returned by a previous search
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</incorrectUsagePatterns>
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<availableDeferredTools>
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Available deferred tools (must be loaded with tool_search_tool_regex before use):
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copilot_getNotebookSummary
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create_directory
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create_new_jupyter_notebook
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create_new_workspace
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edit_notebook_file
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get_doc_info
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get_project_setup_info
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get_search_view_results
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get_vscode_api
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github_repo
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install_extension
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open_simple_browser
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read_notebook_cell_output
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read_project_structure
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run_notebook_cell
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run_vscode_command
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search_subagent
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search_workspace_symbols
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test_failure
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test_search
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tool_replay
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</availableDeferredTools>
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</toolSearchInstructions>
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<communicationStyle>
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Maintain clarity and directness in all responses, delivering complete information while matching response depth to the task's complexity.
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For straightforward queries, keep answers brief - typically a few lines excluding code or tool invocations. Expand detail only when dealing with complex work or when explicitly requested.

‎src/extension/prompts/node/agent/test/__snapshots__/agentPrompts-claude-opus-4.5/all_tools.spec.snap‎

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@@ -40,6 +40,63 @@ You don't currently have any tools available for running terminal commands. If t
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Tools can be disabled by the user. You may see tools used previously in the conversation that are not currently available. Be careful to only use the tools that are currently available to you.
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</toolUseInstructions>
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<toolSearchInstructions>
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Use the tool_search_tool_regex tool to search for deferred tools before calling them.
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<mandatory>
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You MUST use the tool_search_tool_regex tool to load deferred tools BEFORE calling them directly.
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This is a BLOCKING REQUIREMENT - deferred tools listed below are NOT available until you load them using the tool_search_tool_regex tool. Once a tool appears in the results, it is immediately available to call.
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Why this is required:
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- Deferred tools are not loaded until discovered via tool_search_tool_regex
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- Calling a deferred tool without first loading it will fail
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</mandatory>
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<regexPatternSyntax>
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Construct regex patterns using Python's re.search() syntax. Common patterns:
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- `^mcp__github__` - matches tools starting with "mcp__github__"
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- `issue|pull_request` - matches tools containing "issue" OR "pull_request"
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- `create.*branch` - matches tools with "create" followed by "branch"
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- `mcp__.*__list` - matches MCP tools ending with "list"
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The pattern is matched case-insensitively against tool names.
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</regexPatternSyntax>
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<incorrectUsagePatterns>
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NEVER do these:
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- Calling a deferred tool directly without loading it first with tool_search_tool_regex
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- Calling tool_search_tool_regex again for a tool that was already returned by a previous search
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</incorrectUsagePatterns>
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<availableDeferredTools>
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Available deferred tools (must be loaded with tool_search_tool_regex before use):
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copilot_getNotebookSummary
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create_directory
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create_new_jupyter_notebook
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create_new_workspace
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edit_notebook_file
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get_doc_info
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get_project_setup_info
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get_search_view_results
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get_vscode_api
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github_repo
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install_extension
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open_simple_browser
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read_notebook_cell_output
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read_project_structure
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run_notebook_cell
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run_vscode_command
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search_subagent
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search_workspace_symbols
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test_failure
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test_search
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tool_replay
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</availableDeferredTools>
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</toolSearchInstructions>
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<communicationStyle>
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Maintain clarity and directness in all responses, delivering complete information while matching response depth to the task's complexity.
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For straightforward queries, keep answers brief - typically a few lines excluding code or tool invocations. Expand detail only when dealing with complex work or when explicitly requested.

‎src/platform/configuration/common/configurationService.ts‎

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@@ -855,7 +855,7 @@ export namespace ConfigKey {
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/** Context editing for Anthropic Messages API */
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export const AnthropicContextEditingEnabled = defineSetting<boolean>('chat.anthropic.contextEditing.enabled', ConfigType.ExperimentBased, false);
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/** Enable tool search for Anthropic Messages API (deferred tool loading). Uses BM25 for natural language search. */
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export const AnthropicToolSearchEnabled = defineSetting<boolean>('chat.anthropic.toolSearchTool.enabled', ConfigType.ExperimentBased, false);
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export const AnthropicToolSearchEnabled = defineSetting<boolean>('chat.anthropic.toolSearchTool.enabled', ConfigType.ExperimentBased, true);
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/** Configure reasoning effort sent to Responses API */
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export const ResponsesApiReasoningEffort = defineSetting<'low' | 'medium' | 'high' | 'default'>('chat.responsesApiReasoningEffort', ConfigType.ExperimentBased, 'default');
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/** Configure reasoning summary style sent to Responses API */

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