microsoft/agent-framework

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A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

Stars: 13.6k
Forks: 2.3k
Open beginner issues: 1
Indexed issues: 494
Avg merge: 2d 45m
Merged PRs (30d): 358

Dominant language: Python
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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494 open issues indexed

Python: Harness: session-scoped file_access_store option when session_id is unknown at create_harness_agent time Open

python triage

Difficulty 5/5 Over a week Newbie friendliness 42/100

microsoft/agent-framework#8539 · Opened Sep 19, 2026
Python: [Bug]: Filtered vector delete tools reject MongoDB ObjectId keys Open

agents python reproduced

microsoft/agent-framework#8534 · 1 comment · 1 assignee · Opened Sep 18, 2026
.NET: Memory portability between agents — verified memory bundles with chain of custody (complements A2A) Open

.NET python triage

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/agent-framework#8530 · Opened Sep 18, 2026
.NET: [Bug]: Agent chat completions endpoint does not terminate SSE stream with data: [DONE]\n\n Open

.NET hosting reproduced

microsoft/agent-framework#8526 · 1 comment · 1 assignee · Opened Sep 18, 2026
Python: empty-string instructions inject a contentless system message Open

python triage

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

microsoft/agent-framework#8523 · Opened Sep 18, 2026
Python: [Feature]: Make workflows stateless with caller-owned checkpoints and msgspec snapshots Open

python vnext

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/agent-framework#8522 · Opened Sep 18, 2026
Python: duplicate User-Agent headers when caller passes lowercase user-agent Open

python triage

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

microsoft/agent-framework#8520 · Opened Sep 18, 2026
Python: checkpoints flatten dict subclasses (defaultdict/Counter/OrderedDict become plain dict) Open

python triage

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

microsoft/agent-framework#8517 · Opened Sep 18, 2026
Python: A2AAgent rejects int timeouts (only float/httpx.Timeout accepted) Open

python triage

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

microsoft/agent-framework#8515 · 2 comments · Opened Sep 18, 2026
Python: get_latest timestamp ties return a checkpoint chosen by save order, can restore stale state Open

python triage

Difficulty 3/5 1-2 days Newbie friendliness 68/100

microsoft/agent-framework#8513 · Opened Sep 18, 2026
.NET: [Bug]: Rejected tool approvals are re-requested unless CreateResponse(false, reason) provides a reason (using GPT-5.6-Terra) Open

.NET reproduced

microsoft/agent-framework#8503 · 1 comment · 1 assignee · Opened Sep 18, 2026
Python: [Bug] No API to control Session Memory injection on HITL retry — causes quadratic token growth in multi-turn agent workflows Open

python workflows

microsoft/agent-framework#8496 · 1 comment · 1 assignee · Opened Sep 18, 2026
.NET: Python: [Bug]: SwitchCaseEdgeGroup swallows case-condition errors and silently routes the message to the default branch Open

.NET observability python reproduced workflows

microsoft/agent-framework#8489 · 1 comment · 1 assignee · Opened Sep 18, 2026
Python: Hosted Responses lose CostControl budget failure metadata Open

foundry hosting python reproduced

microsoft/agent-framework#8487 · 1 comment · 1 assignee · Opened Sep 17, 2026
Python: [Bug]: Hosted /responses drops finish_reason="content_filter" — filtered turns are indistinguishable from successful ones Open

foundry hosting python reproduced

microsoft/agent-framework#8475 · 2 comments · 1 assignee · Opened Sep 17, 2026
Python: [Bug]: WorkflowAgent drops response metadata when streaming an AgentResponse output Open

python reproduced workflows

microsoft/agent-framework#8463 · 1 comment · 1 assignee · Opened Sep 17, 2026
.NET: [Bug]: Replying in a CopilotKit webchat with reasoning results in "System.InvalidOperationException: Unknown chat role: reasoning" Open

.NET ag-ui hosting reproduced

microsoft/agent-framework#8462 · 1 comment · 1 assignee · Opened Sep 17, 2026
Python: [Bug]: FileSystemAgentFileStore.delete can violate its result contract during concurrent deletion Open

harness python reproduced

microsoft/agent-framework#8456 · 1 comment · 1 assignee · Opened Sep 17, 2026
Python: [Bug]: once-per-run history drops earlier tool-loop turns when function middleware terminates Open

likely-fixed python

microsoft/agent-framework#8455 · 1 comment · 1 assignee · Opened Sep 17, 2026
.NET: Hyperlight host-tool parameter schemas missing from execute_code descriptions Open

.NET

Difficulty 3/5 1-2 days Newbie friendliness 48/100

microsoft/agent-framework#8446 · 1 comment · Opened Sep 17, 2026
.NET: track programmatic message-event configuration for OTel Distro Open

.NET

Difficulty 5/5 Over a week Newbie friendliness 45/100

microsoft/agent-framework#8444 · 2 comments · Opened Sep 17, 2026
.NET: [Bug]: Opening user message is dropped from InMemoryChatHistoryProvider when compaction is enabled and the first agent action is a tool call Open

.NET agents reproduced

microsoft/agent-framework#8441 · 2 comments · 1 assignee · Opened Sep 17, 2026
Python: Mixed pause recovery can lose provider outbox state and mis-correlate Host results Open

agents python reproduced

microsoft/agent-framework#8436 · 1 comment · 1 assignee · Opened Sep 17, 2026
.NET: [Bug]: Cannot set ReasoningEffort on gpt-5.6-luna Open

.NET harness

microsoft/agent-framework#8429 · 3 comments · 1 assignee · Opened Sep 16, 2026
.NET: [Docmentation]: Unclear how to show reasoning in AG-UI Open

.NET likely-fixed

microsoft/agent-framework#8426 · 4 comments · 1 assignee · Opened Sep 16, 2026
Python: Foundry Hosting: preserve standard MCP approval identity across continuation Open

foundry hosting python reproduced

microsoft/agent-framework#8418 · 2 comments · 1 assignee · Opened Sep 16, 2026
[Feature]: Support enable_message_events parameter in enable_instrumentation() to allow Microsoft OTel Distro configuration Open

agents foundry observability

microsoft/agent-framework#8412 · 1 assignee · Opened Sep 16, 2026
.NET: [Bug]: Hosted-agent runtime never activates OTLP export to a third-party destination, despite docs describing it as automatic Open

.NET needs-maintainer-triage python triage

Difficulty 4/5 3-5 days Newbie friendliness 72/100

microsoft/agent-framework#8407 · 2 comments · Opened Sep 15, 2026
.NET: Consolidate InMemoryAgentSessionStore in Microsoft.Agents.AI Open

.NET

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/agent-framework#8390 · Opened Sep 15, 2026
.NET: [Bug]: Hosted agent toolbox consent link is bound to the container's managed identity, so sign-in fails with "Code <id> not found" Open

.NET needs-maintainer-triage triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/agent-framework#8379 · Opened Sep 14, 2026
Python: [Bug]: AG-UI skips assistant text when response_format is a JSON Schema mapping Open

ag-ui python reproduced

microsoft/agent-framework#8361 · 1 comment · 1 assignee · Opened Sep 14, 2026
.NET: Provide typed access to RunAgentInput.State in .NET AG-UI Open

.NET ag-ui hosting

microsoft/agent-framework#8359 · 1 assignee · Opened Sep 13, 2026
Declarative CustomerSupport: how should a host uniformly render UserMessage from output? Open

.NET python triage

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/agent-framework#8346 · Opened Sep 13, 2026
Python: [Feature]: Publish which arguments an invocation's variable expansion rewrote Open

needs-maintainer-triage python triage

Difficulty 5/5 Over a week Newbie friendliness 48/100

microsoft/agent-framework#8342 · Opened Sep 13, 2026
.NET: [Bug]: Concurrency capability is not preserved by function and subworkflow bindings Open

.NET reproduced workflows

microsoft/agent-framework#8341 · 1 comment · 1 assignee · Opened Sep 13, 2026
.NET: [Bug]: ChatClientAgent drops ResponseFormat before invoking underlying IChatClient Open

.NET likely-fixed

microsoft/agent-framework#8339 · 1 comment · 1 assignee · Opened Sep 13, 2026
Python: [Feature]: First-class background execution for workflows (parity with agent Background Responses) Open

foundry python workflows

microsoft/agent-framework#8332 · 1 comment · 1 assignee · Opened Sep 12, 2026
Python: [Bug]: ChatMiddleware has no supported way to make a durable change to the message list, so compaction silently no-ops behind any middleware that replaces messages Open

agents compaction middleware python

microsoft/agent-framework#8313 · 1 comment · 1 assignee · Opened Sep 11, 2026
Python: Design question: why do Declarative InvokeAzureAgent and WorkflowBuilder AgentExecutor differ in agent conversation semantics? Open

.NET python triage

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/agent-framework#8298 · Opened Sep 11, 2026
Download files links are not working after publishing the agent in Microsoft 365 Copilot and Microsoft Teams Open

foundry hosting

microsoft/agent-framework#8293 · 1 comment · 1 assignee · Opened Sep 11, 2026
Python: [Bug]: Functional workflow checkpoint replay can swap cached results between concurrent calls to the same @step Open

python reproduced workflows

microsoft/agent-framework#8292 · 5 comments · 1 assignee · Opened Sep 11, 2026
Python: [Bug]: MAF workflow terminates on transient Foundry exceptions instead of retrying — workflow instance cannot be reused after crash Open

foundry python workflows

microsoft/agent-framework#8282 · 1 assignee · Opened Sep 11, 2026
Python: perf(foundry-hosting): FoundryAgentSessionStore rebuilds FoundryStateStore (credential + metadata round-trip) on every request Open

foundry hosting python reproduced

microsoft/agent-framework#8280 · 1 comment · 1 assignee · Opened Sep 11, 2026
Python: [Feature]: Support the stateless MCP 2026-07-28 revision alongside 2025-era peers Open

mcp python

microsoft/agent-framework#8245 · 1 comment · 1 assignee · Opened Sep 10, 2026
.NET: [Bug]: UseOpenTelemetry breaks background continuation tokens Open

.NET agents reproduced

microsoft/agent-framework#8243 · 1 comment · 1 assignee · Opened Sep 10, 2026
Python: [Bug]: SequentialBuilder second agent receives assistant-ending history and some models return empty text Open

orchestration python

microsoft/agent-framework#8240 · 1 assignee · Opened Sep 10, 2026
Python: [Feature]: Inbound chat middleware sample for an optional third-party pre-model screener Open

agents middleware python

microsoft/agent-framework#8218 · 1 assignee · Opened Sep 10, 2026
Python: [Feature]: Document a third-party Python evaluator that preserves evidence metadata Open

agents python

microsoft/agent-framework#8217 · 1 assignee · Opened Sep 10, 2026
Python: Add a typed schema for AgentExecutor checkpoint state Open

agents python

microsoft/agent-framework#8201 · 1 assignee · Opened Sep 9, 2026
.NET: [Feature]: UseOpenTelemetry support for IHostedAgentBuilder Open

.NET hosting

microsoft/agent-framework#8177 · 2 comments · 1 assignee · Opened Sep 9, 2026

microsoft/agent-framework

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