@@ -32,8 +32,10 @@ pip install langbase
3232### 1. Set up your API key
3333
3434Create a ` .env ` file and add your [ Langbase API Key] ( https://langbase.com/docs/api-reference/api-keys ) .
35+
3536``` bash
3637LANGBASE_API_KEY=" your-api-key"
38+ LLM_API_KEY=" your-llm-api-key"
3739```
3840
3941---
@@ -49,6 +51,7 @@ load_dotenv()
4951
5052# Get API key from environment variable
5153langbase_api_key = os.getenv(" LANGBASE_API_KEY" )
54+ llm_api_key = os.getenv(" LLM_API_KEY" )
5255
5356# Initialize the client
5457lb = Langbase(api_key = langbase_api_key)
@@ -58,57 +61,83 @@ lb = Langbase(api_key=langbase_api_key)
5861
5962``` python
6063# Simple generation
61- response = lb.pipes.run(
62- name = " ai-agent" ,
63- messages = [{" role" : " user" , " content" : " Tell me about AI" }],
64+ response = lb.agent.run(
65+ input = [{" role" : " user" , " content" : " Tell me about AI" }],
66+ model = " openai:gpt-4.1-mini" ,
67+ api_key = llm_api_key,
6468)
6569
66- print (response[" completion " ])
70+ print (response[" output " ])
6771```
6872
6973---
7074
7175### 4. Stream text (Simple)
7276
7377``` python
78+ form langbase import get_runner
79+
7480# Stream text as it's generated
75- response = lb.pipes.run(
76- name = " ai-agent" ,
77- messages = [{" role" : " user" , " content" : " Tell me about AI" }],
81+ response = langbase.agent.run(
82+ input = [{" role" : " user" , " content" : " Tell me about AI" }],
83+ model = " openai:gpt-4.1-mini" ,
84+ api_key = llm_api_key,
7885 stream = True ,
7986)
8087
81- for text in stream_text(response[" stream" ]):
82- print (text, end = " " , flush = True )
88+ runner = get_runner(response)
89+
90+ for content in runner.text_generator():
91+ print (content, end = " " , flush = True )
8392```
8493
8594### 5. Stream with typed events (Advanced) 🆕
8695
8796``` python
8897from langbase import StreamEventType, get_typed_runner
8998
90- # Get streaming response
91- response = lb.pipes.run(
92- name = " ai-agent " ,
93- messages = [{ " role " : " user " , " content " : " Tell me about AI " }] ,
99+ response = langbase.agent.run(
100+ input = [{ " role " : " user " , " content " : " What is an AI Engineer? " }],
101+ model = " openai:gpt-4.1-mini " ,
102+ api_key = llm_api_key ,
94103 stream = True ,
95104)
96105
97106# Create typed stream processor
98107runner = get_typed_runner(response)
99108
100109# Register event handlers
101- runner.on(StreamEventType.CONNECT , lambda e :
102- print (f " ✓ Connected to thread: { e[' threadId' ]} " ))
110+ runner.on(
111+ StreamEventType.CONNECT ,
112+ lambda event : print (f " ✓ Connected! Thread ID: { event[' threadId' ]} \n " ),
113+ )
103114
104- runner.on(StreamEventType.CONTENT , lambda e :
105- print (e[" content" ], end = " " , flush = True ))
115+ runner.on(
116+ StreamEventType.CONTENT ,
117+ lambda event : print (event[" content" ], end = " " , flush = True ),
118+ )
106119
107- runner.on(StreamEventType.TOOL_CALL , lambda e :
108- print (f " \n 🔧 Tool: { e[' toolCall' ][' function' ][' name' ]} " ))
120+ runner.on(
121+ StreamEventType.TOOL_CALL ,
122+ lambda event : print (
123+ f " \n 🔧 Tool call: { event[' toolCall' ][' function' ][' name' ]} "
124+ ),
125+ )
109126
110- runner.on(StreamEventType.END , lambda e :
111- print (f " \n ⏱️ Duration: { e[' duration' ]:.2f } s " ))
127+ runner.on(
128+ StreamEventType.COMPLETION ,
129+ lambda event : print (f " \n\n ✓ Completed! Reason: { event[' reason' ]} " ),
130+ )
131+
132+ runner.on(
133+ StreamEventType.ERROR ,
134+ lambda event : print (f " \n ❌ Error: { event[' message' ]} " ),
135+ )
136+
137+ runner.on(
138+ StreamEventType.END ,
139+ lambda event : print (f " ⏱️ Total duration: { event[' duration' ]:.2f } s " ),
140+ )
112141
113142# Process the stream
114143runner.process()
@@ -205,9 +234,9 @@ Explore the [examples](./examples) directory for complete working examples:
205234- [ Document processing] ( ./examples/parser/ )
206235- [ Workflow automation] ( ./examples/workflow/ )
207236
208- ## API Reference
237+ ## SDK Reference
209238
210- For detailed API documentation, visit [ langbase.com/docs/sdk] ( https://langbase.com/docs/sdk ) .
239+ For detailed SDK documentation, visit [ langbase.com/docs/sdk] ( https://langbase.com/docs/sdk ) .
211240
212241## Contributing
213242
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