migrating-ai-sdk-to-common-ai

Migrate airflow-ai-sdk to apache-airflow-providers-common-ai

This skill migrates Airflow projects from airflow-ai-sdk to apache-airflow-providers-common-ai (0.1.0+), the official Airflow AI provider built on PydanticAI.

CRITICAL: The new provider requires Airflow 3.0+ and pydantic-ai-slim >= 1.34.0. The API surface has changed: LLM configuration moves from code (model strings/objects) to Airflow connections (pydanticai type). There is no @task.embed in the new provider.

Before starting

Use the Grep tool with the pattern below to inventory everything that needs to migrate:

airflow_ai_sdk|airflow-ai-sdk|ai_sdk|@task\.llm|@task\.agent|@task\.llm_branch|@task\.embed

From the results, capture:

1. All files importing airflow-ai-sdk / airflow_ai_sdk
2. Which decorators are in use: @task.llm, @task.agent, @task.llm_branch, @task.embed
3. The model configuration pattern (string names like "gpt-5", or OpenAIModel(...) objects)
4. Any airflow_ai_sdk.BaseModel subclasses used as output_type

Use this inventory to drive the steps below.

---

Step 1: Update requirements.txt

Remove:

airflow-ai-sdk[openai]
# or any variant: airflow-ai-sdk[openai]==0.1.7, airflow-ai-sdk[anthropic], etc.

Add:

apache-airflow-providers-common-ai[openai]>=0.1.0

Use the latest available 0.x version unless the user has pinned a specific one. Available extras match the LLM provider: [openai], [anthropic], [google], [bedrock], [groq], [mistral], [mcp].

Keep sentence-transformers and torch if the project uses embeddings (they now run via plain @task instead of @task.embed).

---

Step 2: Create PydanticAI connection

The new provider uses an Airflow connection instead of model strings or objects in code.

Connection type: pydanticai Default connection ID: pydanticai_default

Via environment variable (.env)

AIRFLOW_CONN_PYDANTICAI_DEFAULT='{
    "conn_type": "pydanticai",
    "password": "<api-key>",
    "extra": {
        "model": "<provider>:<model-name>"
    }
}'

Model format

The model field uses provider:model format:

Provider	Example model value
OpenAI	openai:gpt-5
Anthropic	anthropic:claude-sonnet-4-20250514
Google	google:gemini-2.5-pro
Groq	groq:llama-3.3-70b-versatile
Mistral	mistral:mistral-large-latest
Bedrock	bedrock:us.anthropic.claude-sonnet-4-20250514-v1:0

Custom endpoints (Ollama, vLLM, Snowflake Cortex, etc.)

Set host to the base URL:

AIRFLOW_CONN_PYDANTICAI_CORTEX='{
    "conn_type": "pydanticai",
    "password": "<api-key>",
    "host": "https://my-endpoint.com/v1",
    "extra": {
        "model": "openai:<model-name>"
    }
}'

Use the openai: prefix for any OpenAI-compatible API, regardless of the actual provider.

Connection ID convention

The env var name determines the connection ID:

• AIRFLOW_CONN_PYDANTICAI_DEFAULT creates pydanticai_default
• AIRFLOW_CONN_PYDANTICAI_CORTEX creates pydanticai_cortex

Model resolution priority

1. model_id parameter on the decorator/operator (highest)
2. model in connection's extra JSON (fallback)

---

Step 3: Migrate decorators

@task.llm

# BEFORE (airflow-ai-sdk)
import airflow_ai_sdk as ai_sdk

class MyOutput(ai_sdk.BaseModel):
    field: str

@task.llm(
    model="gpt-5",                    # or model=OpenAIModel(...)
    system_prompt="You are helpful.",
    output_type=MyOutput,
)
def my_task(text: str) -> str:
    return text

# AFTER (apache-airflow-providers-common-ai)
from pydantic import BaseModel

class MyOutput(BaseModel):
    field: str

@task.llm(
    llm_conn_id="pydanticai_default",  # Airflow connection ID
    system_prompt="You are helpful.",
    output_type=MyOutput,
)
def my_task(text: str) -> str:
    return text

Parameter mapping:

airflow-ai-sdk	common-ai provider	Notes
model="gpt-5"	llm_conn_id="pydanticai_default"	Model specified in connection
model=OpenAIModel(...)	llm_conn_id="pydanticai_default"	Model + endpoint in connection
system_prompt="..."	system_prompt="..."	Unchanged
output_type=MyModel	output_type=MyModel	Unchanged
result_type=MyModel	output_type=MyModel	result_type was already deprecated
(not available)	model_id="openai:gpt-5"	Override connection's model
(not available)	require_approval=True	Built-in HITL review
(not available)	agent_params={...}	Extra kwargs for pydantic-ai Agent

@task.llm_branch

# BEFORE
@task.llm_branch(
    model="gpt-5",
    system_prompt="Choose a team...",
    allow_multiple_branches=False,
)
def route(text: str) -> str:
    return text

# AFTER
@task.llm_branch(
    llm_conn_id="pydanticai_default",
    system_prompt="Choose a team...",
    allow_multiple_branches=False,    # same parameter, unchanged
)
def route(text: str) -> str:
    return text

Only change: model= becomes llm_conn_id=.

@task.agent

This has the biggest API change. The Agent is no longer pre-built in user code.

# BEFORE (airflow-ai-sdk) - Agent built at module level
from pydantic_ai import Agent

my_agent = Agent(
    "gpt-5",
    system_prompt="You are a research assistant.",
    tools=[search_tool, lookup_tool],
)

@task.agent(agent=my_agent)
def research(question: str) -> str:
    return question

# AFTER (common-ai provider) - No Agent object, config via parameters
@task.agent(
    llm_conn_id="pydanticai_default",
    system_prompt="You are a research assistant.",
    agent_params={"tools": [search_tool, lookup_tool]},
)
def research(question: str) -> str:
    return question

Parameter mapping:

airflow-ai-sdk	common-ai provider	Notes
agent=Agent(model, ...)	llm_conn_id="..."	Model from connection
Agent's system_prompt	system_prompt="..."	Now a decorator param
Agent's tools=[...]	agent_params={"tools": [...]}	Tools via agent_params dict
Agent's output_type	output_type=MyModel	Now a decorator param
(not available)	toolsets=[...]	pydantic-ai 1.x Toolset objects
(not available)	durable=True	Step-level caching
(not available)	enable_hitl_review=True	Iterative human review loop

Key insight: Everything that was configured on the Agent() constructor now goes into either a top-level decorator parameter or agent_params. The agent_params dict is passed directly to pydantic-ai's Agent constructor.

@task.embed (NO EQUIVALENT)

The new provider does NOT include an embed decorator. Replace with a plain @task:

# BEFORE (airflow-ai-sdk)
@task.embed(
    model_name="all-MiniLM-L6-v2",
    encode_kwargs={"normalize_embeddings": True},
    max_active_tis_per_dagrun=1,
)
def embed_text(text: str) -> str:
    return text

# AFTER (plain @task with sentence-transformers)
@task(max_active_tis_per_dagrun=1)
def embed_text(text: str) -> list[float]:
    from sentence_transformers import SentenceTransformer
    model = SentenceTransformer("all-MiniLM-L6-v2")
    return model.encode(text, normalize_embeddings=True).tolist()

Note: The model is loaded on each task execution. For small workloads this is fine. For large batches, consider embedding all texts in a single task instead of using .expand().

---

Step 4: Update imports

Old import	New import
import airflow_ai_sdk as ai_sdk	Remove entirely
from airflow_ai_sdk import BaseModel	from pydantic import BaseModel
from airflow_ai_sdk.models.base import BaseModel	from pydantic import BaseModel
class Foo(ai_sdk.BaseModel):	class Foo(BaseModel):
from pydantic_ai import Agent	Remove if Agent was only used for @task.agent
from pydantic_ai.models.openai import OpenAIModel	Remove (model config in connection now)

The @task.llm, @task.agent, @task.llm_branch decorators are auto-registered by the provider. No explicit import needed beyond from airflow.sdk import task.

pydantic_ai imports for non-decorator usage (e.g., BinaryContent for multimodal) are still valid since the new provider depends on pydantic-ai-slim>=1.34.0.

---

Step 5: Update connections.yaml (if used for local testing)

pydanticai_default:
  conn_type: pydanticai
  password: <api-key>
  extra:
    model: "openai:gpt-5"

For custom endpoints:

pydanticai_cortex:
  conn_type: pydanticai
  password: <api-key>
  host: https://my-endpoint.com/v1
  extra:
    model: "openai:llama3.1-8b"

---

Step 6: Clean up env vars

The new provider reads model config from the pydanticai connection, so env vars that previously fed the model in code are usually redundant. Before removing any of them, grep the project (and any sibling scripts/services) to confirm nothing else still references them:

OPENAI_API_KEY|OPENAI_BASE_URL|ANTHROPIC_API_KEY|GOOGLE_API_KEY

Candidates for removal only if no other code references them:

• OPENAI_API_KEY (now in the pydanticai connection's password field)
• OPENAI_BASE_URL (now in the connection's host field)
• Custom model name vars (now in the connection's extra.model)

If anything outside the migrated DAGs still uses them (other DAGs not yet migrated, helper scripts, non-Airflow services sharing the .env), leave them in place.

Keep AIRFLOW_CONN_* env vars for all connections.

---

Step 7: Verify

After migration, grep the codebase to confirm no stale references remain:

airflow_ai_sdk|airflow-ai-sdk|ai_sdk\.BaseModel|from pydantic_ai import Agent|from pydantic_ai.models

Verify:

• No imports from airflow_ai_sdk
• No Agent() objects created for @task.agent (unless used outside decorators)
• No model= parameter on LLM decorators (should be llm_conn_id=)
• All @task.embed replaced with plain @task
• pydanticai connection configured in .env or connections.yaml
• requirements.txt has apache-airflow-providers-common-ai[...] instead of airflow-ai-sdk[...]

---

Quick reference: New features in common-ai provider

These features are available after migration but have no airflow-ai-sdk equivalent:

Feature	Parameter	Description
HITL approval	require_approval=True on @task.llm	Pause for human review before returning
HITL review loop	enable_hitl_review=True on @task.agent	Iterative review with regeneration
Durable execution	durable=True on @task.agent	Step-level caching for resilience
Tool logging	enable_tool_logging=True on @task.agent	INFO-level tool call logs (default: on)
Model override	model_id="openai:gpt-5"	Override connection's model per-task
File analysis	@task.llm_file_analysis	Analyze files/images via ObjectStoragePath
NL-to-SQL	@task.llm_sql	Generate SQL from natural language