diff --git a/a2as.yaml b/a2as.yaml
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+++ b/a2as.yaml
@@ -0,0 +1,259 @@
+manifest:
+  version: "0.1.2"
+  schema: https://a2as.org/cert/schema
+  subject:
+    name: datasciencedisciple/expert-agent-engine
+    source: https://github.com/datasciencedisciple/expert-agent-engine
+    branch: main
+    commit: "8360d58b"
+    scope: [src/agent_factory.py, src/agents/__init__.py, src/config_loader.py, src/context.py, src/engine.py, src/output_manager.py]
+  issued:
+    by: A2AS.org
+    at: '2026-01-26T16:14:47Z'
+  signatures:
+    digest: sha256:nLR0VO5_f1enpAuG_0V34Vljr9byKWhn9GVnK6ICQaA
+    key: ed25519:LleC3I-E_9lF_Jv2DbS1IEo3dXMTZPl13wPASjDWx0U
+    sig: ed25519:bkXgg_x8VucZD9J4VCVdYU05vzcs5wL4GiGE6lsKGW_gBjlRstFV4PLoOfEf4ZgPp_-1ribfmuwO12W0GC5vAg
+
+agents:
+  expert_agent:
+    type: instance
+    models: [config.openai_model]
+    params:
+      function: create_expert_agent
+      name: ExpertAgent
+      instructions: [expert_instructions]
+  user_agent:
+    type: instance
+    models: [config.openai_model]
+    params:
+      function: create_user_agent
+
+models:
+  config.openai_model:
+    type: variable
+    agents: [user_agent, expert_agent]
+
+imports:
+  Agent: agents.Agent
+  Any: typing.Any
+  AppConfig: src.config_loader.AppConfig
+  argparse: argparse
+  asyncio: asyncio
+  BaseModel: pydantic.BaseModel
+  ConfigLoaderError: src.config_loader.ConfigLoaderError
+  ConversationContext: src.context.ConversationContext
+  ConversationEngine: src.engine.ConversationEngine
+  ConversationHistory: src.conversation.ConversationHistory
+  create_expert_agent: src.agent_factory.create_expert_agent
+  create_user_agent: src.agent_factory.create_user_agent
+  dataclass: dataclasses.dataclass
+  datetime: datetime
+  Dict: typing.Dict
+  Field: pydantic.Field
+  field_validator: pydantic.field_validator
+  json: json
+  List: typing.List
+  load_config: src.config_loader.load_config
+  load_dotenv: dotenv.load_dotenv
+  logging: logging
+  openai: openai
+  Optional: typing.Optional
+  os: os
+  OutputManager: src.output_manager.OutputManager
+  Path: pathlib.Path
+  RunContextWrapper: agents.run_context.RunContextWrapper
+  Runner: agents.Runner
+  sys: sys
+  TYPE_CHECKING: typing.TYPE_CHECKING
+  ValidationError: pydantic.ValidationError
+  yaml: yaml
+
+functions:
+  __init__:
+    type: sync
+    module: src.output_manager
+    args: [self, output_dir]
+  _ensure_output_dir_exists:
+    type: sync
+    module: src.output_manager
+    args: [self]
+    params:
+      returns: None
+  _get_user_agent_instructions:
+    type: sync
+    module: src.agent_factory
+    args: [context, agent]
+    params:
+      returns: str
+  _set_openai_key:
+    type: sync
+    module: src.agent_factory
+    args: [api_key]
+  create_expert_agent:
+    type: sync
+    module: src.agent_factory
+    args: [config]
+    params:
+      returns: Agent[ConversationContext]
+  create_user_agent:
+    type: sync
+    module: src.agent_factory
+    args: [config]
+    params:
+      returns: Agent[ConversationContext]
+  format_conversation:
+    type: sync
+    module: src.output_manager
+    args: [self, history]
+    params:
+      returns: str
+  generate_filename:
+    type: sync
+    module: src.output_manager
+    args: [self, prefix, extension]
+    params:
+      returns: str
+  generate_takeaways:
+    type: async
+    module: src.output_manager
+    args: [self, history, context, expert_agent, config]
+    params:
+      returns: str
+  get_expert_agent_instructions:
+    type: sync
+    module: src.config_loader
+    args: [self]
+    params:
+      returns: str
+  get_final_history:
+    type: sync
+    module: src.engine
+    args: [self]
+    params:
+      returns: ConversationHistory
+  get_user_agent_instructions:
+    type: sync
+    module: src.config_loader
+    args: [self]
+    params:
+      returns: str
+  history_file_must_exist:
+    type: sync
+    module: src.config_loader
+    args: [cls, v]
+  load_config:
+    type: sync
+    module: src.config_loader
+    args: [config_path_str]
+    params:
+      returns: AppConfig
+  main:
+    type: async
+    module: src.cli
+  output_dir_must_exist:
+    type: sync
+    module: src.config_loader
+    args: [cls, v]
+  parse_arguments:
+    type: sync
+    module: src.cli
+  run_conversation:
+    type: async
+    module: src.engine
+    args: [self]
+    params:
+      returns: ConversationHistory
+  save_takeaways:
+    type: sync
+    module: src.output_manager
+    args: [self, takeaways, transcript_filename]
+    params:
+      returns: Path
+  save_transcript:
+    type: sync
+    module: src.output_manager
+    args: [self, history, filename]
+    params:
+      returns: Path
+
+variables:
+  OPENAI_API_KEY:
+    type: env
+    params:
+      caller: [os.getenv, os.environ]
+      path: [src.config_loader, src.agent_factory]
+
+files:
+  args.config_file:
+    type: variable
+    actions: [read]
+    params:
+      caller: [Path]
+  config/dummy_config.json:
+    type: literal
+    actions: [read]
+  config/dummy_config.yaml:
+    type: literal
+    actions: [read]
+  config/dummy_config_no_key.yaml:
+    type: literal
+    actions: [read]
+  config/dummy_history.txt:
+    type: literal
+    actions: [read]
+  config/temp_factory_test_config.yaml:
+    type: literal
+    actions: [read]
+  config_path:
+    type: literal
+    actions: [read]
+    params:
+      caller: [Path(args.config_file), open, json.load, yaml.safe_load]
+  dummy_config_path:
+    type: literal
+    actions: [read, write, delete]
+    params:
+      caller: [Path('config/temp_factory_test_config.yaml'), dummy_config_path.parent.mkdir, dummy_config_path.write_text,
+        dummy_config_path.unlink]
+  dummy_history_path:
+    type: literal
+    actions: [read, write, delete]
+    params:
+      caller: [Path('config/dummy_history.txt'), dummy_history_path.touch, dummy_history_path.unlink]
+  dummy_json_path:
+    type: literal
+    actions: [read, write, delete]
+    params:
+      caller: [Path('config/dummy_config.json'), dummy_json_path.write_text, dummy_json_path.unlink]
+  dummy_output_dir:
+    type: literal
+    actions: [read, write, delete]
+    params:
+      caller: [Path(temp_factory_output), dummy_output_dir.mkdir, dummy_output_dir.rmdir]
+  dummy_output_path:
+    type: literal
+    actions: [read, write, delete]
+    params:
+      caller: [Path(temp_output), dummy_output_path.mkdir, dummy_output_path.rmdir]
+  dummy_yaml_no_key_path:
+    type: literal
+    actions: [read, write, delete]
+    params:
+      caller: [Path('config/dummy_config_no_key.yaml'), dummy_yaml_no_key_path.write_text, dummy_yaml_no_key_path.unlink]
+  dummy_yaml_path:
+    type: literal
+    actions: [read, write, delete]
+    params:
+      caller: [Path('config/dummy_config.yaml'), dummy_yaml_path.write_text, dummy_yaml_path.unlink]
+  file_path:
+    type: variable
+    actions: [write]
+    params:
+      caller: [open]
+      alias: [f]
+  output_dir:
+    type: variable
+    actions: [read]
+    params:
+      caller: [Path]