Tutorials Intermediate
Migrate to Gemini 3.7 Flash: The minimal Thinking Trap
Preflight your configs for gemini-3.7-flash: 5 breaking changes, a validator, real cost math.
12 min read·Kodetra Technologies
2d agoGuides
AI Guides for Builders
How-to content for builders, indie hackers, and AI engineers. Less theory, more shipped code.
Tutorials 
Tutorials Intermediate
V4-Pro 0813 Just Went GA: A Multi-Step DeepSeek Agent
Build a tool-using DeepSeek V4-Pro agent with effort escalation, on the day it hit GA.
9 min read·Kodetra Technologies
7d ago
Tutorials Intermediate
Seedance 2.5 in Python: 30-Second AI Video, One Pass
Generate a 30-second AI video with synced audio using ByteDance's Seedance 2.5 API in Python.
8 min read·Kodetra Technologies
9d ago
Tutorials Intermediate
Drop-In Claude Swap: DeepSeek via the Anthropic SDK
Run your Claude Messages API code on DeepSeek V4-Pro by changing one base URL.
9 min read·Kodetra Technologies
11d ago
Tutorials Intermediate
Gemini Spark Agents: One API Call, One Cloud Sandbox
The Managed Agents API behind Gemini Spark: build a persistent cloud agent in Python.
9 min read·Kodetra Technologies
15d ago
Tutorials Intermediate
Auto-Route Claude Refusals by Category on Opus 5
Auto-recover from Claude safety refusals on Opus 5 with one line of code: fallbacks='default'.
8 min read·Kodetra Technologies
22d ago
Tutorials Intermediate
Guaranteed JSON From Claude: Structured Outputs in Python
Force Claude to return schema-valid JSON every time, no parsing errors and no retries.
9 min read·Kodetra Technologies
23d ago
Tutorials Advanced
Swap Tools Mid-Chat on Claude Opus 5, Keep the Cache
Add or drop Claude Opus 5 tools between turns without invalidating your prompt cache.
12 min read·Kodetra Technologies
24d ago
Tutorials Intermediate
Opus 5 Effort Router: Auto-Pick Cost vs Capability
Route each task to the right Claude Opus 5 effort level and cut your token bill.
7 min read·Kodetra Technologies
25d ago
Tutorials Intermediate
Gemini 3.6 Flash: Cut Agent Tokens With thinking_level
Build a token-thrifty tool-calling agent on Gemini 3.6 Flash using the new thinking_level control.
10 min read·Kodetra Technologies
Jul 22
Tutorials Intermediate
GPT-5.6 Persisted Reasoning: Reuse Thinking Across Turns
Use reasoning.context to reuse GPT-5.6's chain of thought across turns and cut redundant tokens.
9 min read·Kodetra Technologies
Jul 16
Tutorials Intermediate
Prompt Cache Retention: Cut OpenAI Bills Up to 90%
Structure prompts, set prompt_cache_retention, and read cached_tokens to slash GPT-5.6 input costs.
8 min read·Kodetra Technologies
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