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Ben Thomas
d30cd927b0
* feat: Add Foundry Toolbox (MCP) support to AgentFrameworkResponseHandler Adds support for Foundry Toolsets MCP proxy integration in the hosted agent response handler. Toolsets connect at startup via IHostedService, gating the readiness probe per spec §3.1. MCP tools are injected into every request's ChatOptions and OAuth consent errors (-32006) are intercepted and surfaced as mcp_approval_request + incomplete SSE events. New files: - FoundryToolboxOptions.cs: configuration POCO for toolset names and API version - FoundryToolboxBearerTokenHandler.cs: DelegatingHandler with Azure Bearer token auth, Foundry-Features header injection, and 3x exponential backoff on 429/5xx - McpConsentContext.cs: AsyncLocal-based per-request consent state shared between the tool wrapper and the response handler - ConsentAwareMcpClientTool.cs: AIFunction wrapper that catches -32006 errors and signals consent via shared state and linked CancellationTokenSource - FoundryToolboxService.cs: IHostedService that creates McpClient per toolset at startup and exposes cached tools Modified files: - AgentFrameworkResponseHandler.cs: injects toolbox tools into ChatOptions, sets up linked CTS consent interception, emits mcp_approval_request on -32006 - ServiceCollectionExtensions.cs: adds AddFoundryToolboxes(params string[]) extension - Microsoft.Agents.AI.Foundry.csproj: adds ModelContextProtocol and Azure.Identity dependencies under NETCoreApp condition Sample: - Hosted-Toolbox: minimal hosted agent sample using AddFoundryToolboxes * Rename toolset to toolbox in user-facing API; rename ConsentAwareMcpClientTool to ConsentAwareMcpClientAIFunction * Add HostedMcpToolboxAITool for client-selectable Foundry toolboxes Introduces HostedMcpToolboxAITool, a marker tool subclassing HostedMcpServerTool that rides the OpenAI Responses 'mcp' wire format to let clients request a specific Foundry toolbox per request. - New FoundryAITool.CreateHostedMcpToolbox(name, version?) factory. - FoundryToolboxOptions.StrictMode (default true) rejects unregistered toolboxes; set to false to allow lazy-open on first use. - FoundryToolboxService.GetToolboxToolsAsync(name, version?) resolves cached or lazy-opened MCP tools. - AgentFrameworkResponseHandler parses request.Tools for foundry-toolbox://name[?version=v] markers and injects resolved tools per request, merging with pre-registered ones. - Unit tests for marker parsing and strict-mode resolution. * Bump Azure.AI.Projects to 2.1.0-alpha; add ToolboxRecord/ToolboxVersion factory overloads + tests * Fix PR review issues: retry off-by-one, URI encoding, docs, tests, build - Fix off-by-one in FoundryToolboxBearerTokenHandler retry loop (4 attempts → 3) - URI-encode version parameter in HostedMcpToolboxAITool.BuildAddress - Add XML doc clarifying version pinning is reserved for future use - Add comment clarifying AddHostedService deduplication safety - Fix DevTemporaryTokenCredential expiry to use DateTimeOffset.MaxValue - Fix AgentCard ambiguity in A2AServer sample with using alias - Add 18 new unit tests for retry handler and ReadMcpToolboxMarkers Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> --------- Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com> Co-authored-by: alliscode <bentho@microsoft.com> Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
d30cd927b0
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2026-04-20 12:13:40 -07:00
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