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agent-framework/python/samples/getting_started/workflows
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Eduard van Valkenburg 0521f5bed8 Python: [BREAKING] Simplify API: ChatAgent -> Agent, ChatMessage -> Message (#3747)
* [BREAKING] Rename ChatAgent -> Agent, ChatMessage -> Message, ChatClientProtocol -> SupportsChatGetResponse

Simplify the public API by removing redundant 'Chat' prefix from core types:
- ChatAgent -> Agent
- RawChatAgent -> RawAgent
- ChatMessage -> Message
- ChatClientProtocol -> SupportsChatGetResponse

Also renamed internal WorkflowMessage (was Message in _runner_context) to avoid collision.

No backward compatibility aliases - this is a clean breaking change.

* [BREAKING] Rename Agent chat_client parameter to client

* Fix rebase issues: WorkflowMessage references and broken markdown links

* Fix formatting and lint issues from code quality checks

* Fix import ordering in workflow sample files

* fixed rebase

* Fix test failures: use WorkflowMessage and A2AMessage after ChatMessage→Message rename

- Replace Message(data=..., source_id=...) with WorkflowMessage(...) in workflow tests
- Fix isinstance check in A2A agent to use A2AMessage instead of Message
- Fix import in test_workflow_observability.py (Message→WorkflowMessage)

* Fix lint, fmt, and sample errors after ChatMessage→Message rename

- Auto-fix 70+ ruff lint issues across samples (ChatMessage→Message refs)
- Fix HostedVectorStoreContent→Content.from_hosted_vector_store in file search sample
- Fix _normalize_messages→normalize_messages in custom agent sample
- Fix context.terminate→raise MiddlewareTermination in middleware samples
- Fix with_update_hook→with_transform_hook in override middleware sample
- Add TOptions_co import back to custom_chat_client sample
- Add noqa for FastAPI File() default in chatkit sample
- Fix B023 loop variable capture in weather agent sample

* fix: update Agent constructor calls from chat_client to client in declaration-only tool tests

* fix: add register_cleanup to devui lazy-loading proxy and type stub

* fixed tests and updated new pieces

* fix agui typevar

* fix merge errors

* fix merge conflicts

* fiux merge

* Remove unused links

---------

Co-authored-by: Evan Mattson <evan.mattson@microsoft.com>
0521f5bed8 · 2026-02-10 23:04:32 +00:00
History
..

Workflows Getting Started Samples

Installation

Microsoft Agent Framework Workflows support ships with the core agent-framework or agent-framework-core package, so no extra installation step is required.

To install with visualization support:

pip install agent-framework[viz] --pre

To export visualization images you also need to install GraphViz.

Samples Overview

Foundational Concepts - Start Here

Begin with the _start-here folder in order. These three samples introduce the core ideas of executors, edges, agents in workflows, and streaming.

Sample File Concepts
Executors and Edges _start-here/step1_executors_and_edges.py Minimal workflow with basic executors and edges
Agents in a Workflow _start-here/step2_agents_in_a_workflow.py Introduces adding Agents as nodes; calling agents inside a workflow
Streaming (Basics) _start-here/step3_streaming.py Extends workflows with event streaming

Once comfortable with these, explore the rest of the samples below.


Samples Overview (by directory)

agents

Sample File Concepts
Azure Chat Agents (Streaming) agents/azure_chat_agents_streaming.py Add Azure Chat agents as edges and handle streaming events
Azure AI Agents (Streaming) agents/azure_ai_agents_streaming.py Add Azure AI agents as edges and handle streaming events
Azure AI Agents (Shared Thread) agents/azure_ai_agents_with_shared_thread.py Share a common message thread between multiple Azure AI agents in a workflow
Custom Agent Executors agents/custom_agent_executors.py Create executors to handle agent run methods
Sequential Workflow as Agent agents/sequential_workflow_as_agent.py Build a sequential workflow orchestrating agents, then expose it as a reusable agent
Concurrent Workflow as Agent agents/concurrent_workflow_as_agent.py Build a concurrent fan-out/fan-in workflow, then expose it as a reusable agent
Magentic Workflow as Agent agents/magentic_workflow_as_agent.py Configure Magentic orchestration with callbacks, then expose the workflow as an agent
Workflow as Agent (Reflection Pattern) agents/workflow_as_agent_reflection_pattern.py Wrap a workflow so it can behave like an agent (reflection pattern)
Workflow as Agent + HITL agents/workflow_as_agent_human_in_the_loop.py Extend workflow-as-agent with human-in-the-loop capability
Workflow as Agent with Thread agents/workflow_as_agent_with_thread.py Use AgentThread to maintain conversation history across workflow-as-agent invocations
Workflow as Agent kwargs agents/workflow_as_agent_kwargs.py Pass custom context (data, user tokens) via kwargs through workflow.as_agent() to @ai_function tools
Handoff Workflow as Agent agents/handoff_workflow_as_agent.py Use a HandoffBuilder workflow as an agent with HITL via FunctionCallContent/FunctionResultContent

checkpoint

Sample File Concepts
Checkpoint & Resume checkpoint/checkpoint_with_resume.py Create checkpoints, inspect them, and resume execution
Checkpoint & HITL Resume checkpoint/checkpoint_with_human_in_the_loop.py Combine checkpointing with human approvals and resume pending HITL requests
Checkpointed Sub-Workflow checkpoint/sub_workflow_checkpoint.py Save and resume a sub-workflow that pauses for human approval
Handoff + Tool Approval Resume checkpoint/handoff_with_tool_approval_checkpoint_resume.py Handoff workflow that captures tool-call approvals in checkpoints and resumes with human decisions
Workflow as Agent Checkpoint checkpoint/workflow_as_agent_checkpoint.py Enable checkpointing when using workflow.as_agent() with checkpoint_storage parameter

composition

Sample File Concepts
Sub-Workflow (Basics) composition/sub_workflow_basics.py Wrap a workflow as an executor and orchestrate sub-workflows
Sub-Workflow: Request Interception composition/sub_workflow_request_interception.py Intercept and forward sub-workflow requests using @handler for SubWorkflowRequestMessage
Sub-Workflow: Parallel Requests composition/sub_workflow_parallel_requests.py Multiple specialized interceptors handling different request types from same sub-workflow
Sub-Workflow: kwargs Propagation composition/sub_workflow_kwargs.py Pass custom context (user tokens, config) from parent workflow through to sub-workflow agents

control-flow

Sample File Concepts
Sequential Executors control-flow/sequential_executors.py Sequential workflow with explicit executor setup
Sequential (Streaming) control-flow/sequential_streaming.py Stream events from a simple sequential run
Edge Condition control-flow/edge_condition.py Conditional routing based on agent classification
Switch-Case Edge Group control-flow/switch_case_edge_group.py Switch-case branching using classifier outputs
Multi-Selection Edge Group control-flow/multi_selection_edge_group.py Select one or many targets dynamically (subset fan-out)
Simple Loop control-flow/simple_loop.py Feedback loop where an agent judges ABOVE/BELOW/MATCHED
Workflow Cancellation control-flow/workflow_cancellation.py Cancel a running workflow using asyncio tasks

human-in-the-loop

Sample File Concepts
Human-In-The-Loop (Guessing Game) human-in-the-loop/guessing_game_with_human_input.py Interactive request/response prompts with a human via ctx.request_info()
Agents with Approval Requests in Workflows human-in-the-loop/agents_with_approval_requests.py Agents that create approval requests during workflow execution and wait for human approval to proceed
Agents with Declaration-Only Tools human-in-the-loop/agents_with_declaration_only_tools.py Workflow pauses when agent calls a client-side tool (func=None), caller supplies the result
SequentialBuilder Request Info human-in-the-loop/sequential_request_info.py Request info for agent responses mid-workflow using .with_request_info() on SequentialBuilder
ConcurrentBuilder Request Info human-in-the-loop/concurrent_request_info.py Review concurrent agent outputs before aggregation using .with_request_info() on ConcurrentBuilder
GroupChatBuilder Request Info human-in-the-loop/group_chat_request_info.py Steer group discussions with periodic guidance using .with_request_info() on GroupChatBuilder

tool-approval

Tool approval samples demonstrate using @tool(approval_mode="always_require") to gate sensitive tool executions with human approval. These work with the high-level builder APIs.

Sample File Concepts
SequentialBuilder Tool Approval tool-approval/sequential_builder_tool_approval.py Sequential workflow with tool approval gates for sensitive operations
ConcurrentBuilder Tool Approval tool-approval/concurrent_builder_tool_approval.py Concurrent workflow with tool approvals across parallel agents
GroupChatBuilder Tool Approval tool-approval/group_chat_builder_tool_approval.py Group chat workflow with tool approval for multi-agent collaboration

observability

Sample File Concepts
Executor I/O Observation observability/executor_io_observation.py Observe executor input/output data via executor_invoked events (type='executor_invoked') and executor_completed events (type='executor_completed') without modifying executor code

For additional observability samples in Agent Framework, see the observability getting started samples. The sample demonstrates integrating observability into workflows.

orchestration

Orchestration samples (Sequential, Concurrent, Handoff, GroupChat, Magentic) have moved to the dedicated orchestrations samples directory.

parallelism

Sample File Concepts
Concurrent (Fan-out/Fan-in) parallelism/fan_out_fan_in_edges.py Dispatch to multiple executors and aggregate results
Aggregate Results of Different Types parallelism/aggregate_results_of_different_types.py Handle results of different types from multiple concurrent executors
Map-Reduce with Visualization parallelism/map_reduce_and_visualization.py Fan-out/fan-in pattern with diagram export

state-management

Sample File Concepts
State with Agents state-management/state_with_agents.py Store in state once and later reuse across agents
Workflow Kwargs (Custom Context) state-management/workflow_kwargs.py Pass custom context (data, user tokens) via kwargs to @tool tools

visualization

Sample File Concepts
Concurrent with Visualization visualization/concurrent_with_visualization.py Fan-out/fan-in workflow with diagram export

declarative

YAML-based declarative workflows allow you to define multi-agent orchestration patterns without writing Python code. See the declarative workflows README for more details on YAML workflow syntax and available actions.

Sample File Concepts
Conditional Workflow declarative/conditional_workflow/ Nested conditional branching based on user input
Customer Support declarative/customer_support/ Multi-agent customer support with routing
Deep Research declarative/deep_research/ Research workflow with planning, searching, and synthesis
Function Tools declarative/function_tools/ Invoking Python functions from declarative workflows
Human-in-Loop declarative/human_in_loop/ Interactive workflows that request user input
Marketing declarative/marketing/ Marketing content generation workflow
Simple Workflow declarative/simple_workflow/ Basic workflow with variable setting, conditionals, and loops
Student Teacher declarative/student_teacher/ Student-teacher interaction pattern

resources

Notes

  • Agent-based samples use provider SDKs (Azure/OpenAI, etc.). Ensure credentials are configured, or adapt agents accordingly.

Sequential orchestration uses a few small adapter nodes for plumbing:

  • "input-conversation" normalizes input to list[Message]
  • "to-conversation:" converts agent responses into the shared conversation
  • "complete" publishes the final output event (type='output') These may appear in event streams (executor_invoked/executor_completed). They're analogous to concurrents dispatcher and aggregator and can be ignored if you only care about agent activity.

Environment Variables