.NET: [BREAKING] Add auto-approval rules (heuristics) to ToolApprovalAgent - #6335
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westey-m merged 5 commits intoJun 5, 2026
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Pull request overview
Adds configurable auto-approval heuristics to the .NET ToolApprovalAgent pipeline, enabling tool calls to be auto-approved (after standing “don’t ask again” rules, before prompting the user), and threads these options through UseToolApproval() and HarnessAgent.
Changes:
- Introduces
ToolApprovalAgentOptionsto configure bothJsonSerializerOptionsand orderedAutoApprovalRules. - Updates
ToolApprovalAgentto evaluate heuristic rules in both non-streaming and streaming flows. - Plumbs
ToolApprovalAgentOptionsthroughUseToolApproval()andHarnessAgentOptions.
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Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| dotnet/src/Microsoft.Agents.AI/Harness/ToolApproval/ToolApprovalAgentOptions.cs | Adds new options type including AutoApprovalRules. |
| dotnet/src/Microsoft.Agents.AI/Harness/ToolApproval/ToolApprovalAgent.cs | Implements heuristic evaluation (standing rules → heuristics → prompt) in both run paths. |
| dotnet/src/Microsoft.Agents.AI/Harness/ToolApproval/ToolApprovalAgentBuilderExtensions.cs | Switches UseToolApproval to accept ToolApprovalAgentOptions. |
| dotnet/src/Microsoft.Agents.AI.Harness/HarnessAgentOptions.cs | Adds ToolApprovalAgentOptions pass-through property. |
| dotnet/src/Microsoft.Agents.AI.Harness/HarnessAgent.cs | Passes ToolApprovalAgentOptions into UseToolApproval(). |
| dotnet/tests/Microsoft.Agents.AI.UnitTests/Harness/ToolApproval/ToolApprovalAgentTests.cs | Updates constructor test + adds heuristic coverage for run and streaming paths. |
| dotnet/tests/Microsoft.Agents.AI.UnitTests/Harness/ToolApproval/ToolApprovalAgentBuilderExtensionsTests.cs | Updates extension tests for new options parameter. |
| dotnet/tests/Microsoft.Agents.AI.Harness.UnitTests/HarnessAgentTests.cs | Adds a new test intended to validate options pass-through. |
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peibekwe
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Co-authored-by: SergeyMenshykh <68852919+SergeyMenshykh@users.noreply.github.com>
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Port microsoft/agent-framework#6335: add heuristic auto-approval rules to ToolApprovalAgent. AutoApprovalFuncs in Config lets callers provide predicate functions that are evaluated after standing rules but before surfacing an approval request to the user. The first function returning true auto-approves the call without interrupting the caller. - Add AutoApprovalFuncs []func(*message.FunctionCallContent) bool to Config - Change New to capture cfg via closure instead of ignoring it - Change run to accept Config and thread it through to drainAutoApprovable - Add matchesAutoApprovalFuncs helper (first-match-wins semantics) - Apply auto-approval funcs in drainAutoApprovable (queued requests) and in the outbound classification loop (new requests from inner agent) - Add 5 tests covering: matching, non-matching, first-match-wins, queued request drain, and standing-rule precedence Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Jun 8, 2026
…iddleware (#254) * feat(toolapproval): add auto-approval funcs (heuristics) to Config Port microsoft/agent-framework#6335: add heuristic auto-approval rules to ToolApprovalAgent. AutoApprovalFuncs in Config lets callers provide predicate functions that are evaluated after standing rules but before surfacing an approval request to the user. The first function returning true auto-approves the call without interrupting the caller. - Add AutoApprovalFuncs []func(*message.FunctionCallContent) bool to Config - Change New to capture cfg via closure instead of ignoring it - Change run to accept Config and thread it through to drainAutoApprovable - Add matchesAutoApprovalFuncs helper (first-match-wins semantics) - Apply auto-approval funcs in drainAutoApprovable (queued requests) and in the outbound classification loop (new requests from inner agent) - Add 5 tests covering: matching, non-matching, first-match-wins, queued request drain, and standing-rule precedence Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * docs(toolapproval): clarify auto-approval callback expectations and naming parity note * refactor(toolapproval): rename auto approval rules and pass context * docs(toolapproval): align config comment terminology with AutoApprovalRules --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
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Summary
Adds configurable auto-approval rules to
ToolApprovalAgent, allowing users to supply heuristic functions that can automatically approve function calls without user interaction.Closes #6083
Changes
New:
ToolApprovalAgentOptionsclassJsonSerializerOptions?— moved from the constructor parameterIEnumerable<Func<FunctionCallContent, ValueTask<bool>>>? AutoApprovalRules— heuristic functions for auto-approving tool callsUpdated:
ToolApprovalAgentToolApprovalAgentOptions?instead ofJsonSerializerOptions?trueresult auto-approves the callValueTask<bool>return typeUpdated:
UseToolApprovalextensionToolApprovalAgentOptions?instead ofJsonSerializerOptions?Updated:
HarnessAgentToolApprovalAgentOptions?property toHarnessAgentOptionsUseToolApproval()for easy configurationEvaluation Order
For each
ToolApprovalRequestContent:trueauto-approvesTests