feat: Adding portkey.ai gateway as a custom model

Author: Fede Kamelhar

README.md

@@ -118,6 +118,7 @@ from strands import Agent
 from strands.models import BedrockModel
 from strands.models.ollama import OllamaModel
 from strands.models.llamaapi import LlamaAPIModel
+from strands.models.portkey import PortkeyModel
 
 # Bedrock
 bedrock_model = BedrockModel(
@@ -142,6 +143,17 @@ llama_model = LlamaAPIModel(
 )
 agent = Agent(model=llama_model)
 response = agent("Tell me about Agentic AI")
+
+# Portkey for all models
+portkey_model = PortkeyModel(
+    api_key="<PORTKEY_API_KEY>",
+    model_id="anthropic.claude-3-5-sonnet-20241022-v2:0",
+    virtual_key="<BEDROCK_VIRTUAL_KEY>",
+    provider="bedrock",
+    base_url="http://portkey-service-gateway.service.prod.example.com/v1",
+)
+agent = Agent(model=portkey_model)
+response = agent("Tell me about Agentic AI")
 ```
 
 Built-in providers:

pyproject.toml

@@ -50,6 +50,11 @@ packages = ["src/strands"]
 anthropic = [
     "anthropic>=0.21.0,<1.0.0",
 ]
+# Optional dependencies for different AI providers
+portkey = [
+    "portkey-ai>=1.0.0,<2.0.0",
+]
+
 dev = [
     "commitizen>=4.4.0,<5.0.0",
     "hatch>=1.0.0,<2.0.0",
@@ -107,7 +112,7 @@ lint-fix = [
 ]
 
 [tool.hatch.envs.hatch-test]
-features = ["anthropic", "litellm", "llamaapi", "ollama", "openai"]
+features = ["anthropic", "litellm", "llamaapi", "ollama", "openai", "portkey"]
 extra-dependencies = [
     "moto>=5.1.0,<6.0.0",
     "pytest>=8.0.0,<9.0.0",