fix: Pin pyproject.toml to launchdarkly-server-sdk-ai>=0.20.0

The tokens= constructor kwarg requires SDK 0.20+; 0.19 still uses usage=. Bump the pyproject.toml pins across all 10 example projects so users land on a compatible SDK. Refs AIC-2383

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: jsonbailey

features/create_agent/pyproject.toml

@@ -13,7 +13,7 @@ agent = "create_agent_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-openai = {version = ">=0.5.0", extras = ["agents"]}
 launchdarkly-server-sdk-ai-langchain = ">=0.6.0"

features/create_agent_graph/pyproject.toml

@@ -13,7 +13,7 @@ agent-graph = "create_agent_graph_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-openai = {version = ">=0.5.0", extras = ["agents"]}
 launchdarkly-server-sdk-ai-langchain = {version = ">=0.6.0", extras = ["graph"]}

features/create_judge/pyproject.toml

@@ -13,7 +13,7 @@ judge = "create_judge_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-openai = ">=0.5.0"
 launchdarkly-server-sdk-ai-langchain = ">=0.6.0"

features/create_model/pyproject.toml

@@ -13,7 +13,7 @@ model = "create_model_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-openai = ">=0.5.0"
 launchdarkly-server-sdk-ai-langchain = ">=0.6.0"

getting_started/bedrock/converse/pyproject.toml

@@ -13,7 +13,7 @@ bedrock = "bedrock_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 boto3 = ">=0.2.0"
 

getting_started/gemini/generate_content/pyproject.toml

@@ -13,7 +13,7 @@ gemini = "gemini_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 google-genai = "^1.30.0"
 

getting_started/langchain/invoke/pyproject.toml

@@ -13,7 +13,7 @@ langchain = "langchain_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-langchain = ">=0.6.0"
 langchain = "^1.0.0"

getting_started/langgraph/react_agent/pyproject.toml

@@ -13,7 +13,7 @@ agent = "langgraph_agent_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-langchain = ">=0.6.0"
 langchain = "^1.0.0"

getting_started/langgraph/state_graph/pyproject.toml

@@ -13,7 +13,7 @@ agent-graph = "langgraph_multi_agent_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-langchain = ">=0.6.0"
 langchain = "^1.0.0"

getting_started/openai/chat_completions/pyproject.toml

@@ -13,7 +13,7 @@ openai = "openai_example:main"
 [tool.poetry.dependencies]
 python = "^3.10"
 python-dotenv = ">=1.0.0"
-launchdarkly-server-sdk-ai = ">=0.19.0"
+launchdarkly-server-sdk-ai = ">=0.20.0"
 launchdarkly-observability = ">=0.1.0"
 launchdarkly-server-sdk-ai-openai = ">=0.5.0"
 openai = ">=1.0.0"