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
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How-to content for builders, indie hackers, and AI engineers. Less theory, more shipped code.
Tutorials 
Tutorials Intermediate
Kimi K3 Partial Mode: Prefill Replies to Force Output
Prefill Kimi K3's assistant turn to lock output shape, force clean JSON, and steer tone.
9 min read·Kodetra Technologies
8d ago
Tutorials Intermediate
Kimi K3 Vision: Extract Structured Data From PDFs in Python
Use Kimi K3's native vision and JSON schema output to turn messy PDF pages into clean, typed data.
9 min read·Kodetra Technologies
11d ago
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
18d ago
Machine Learning Advanced
Read an LLM's Mind: Probe Hidden Thoughts Like J-Space
Train a linear probe on hidden activations and steer output, the method behind Anthropic's J-Lens.
9 min read·Kodetra Technologies
22d ago
Tutorials Intermediate
Pydantic AI: Type-Safe Agents You Can Unit Test
Build agents with typed deps, validated output, and offline tests using Pydantic AI.
9 min read·Kodetra Technologies
Jun 24
Tutorials Intermediate
Claude Opus 4.8 Fast Mode: 2.5x Faster Output in Python
Use speed:"fast" on Claude Opus 4.8 for up to 2.5x faster output, with a safe rate-limit fallback.
9 min read·Kodetra Technologies
Jun 10
Tutorials Intermediate
Fork Gemini Environments: Reusable Agent Sandboxes
Build custom Gemini agents that fork sandboxes every run and stream output.
10 min read·Kodetra Technologies
May 29
Tutorials Intermediate
Pydantic AI 1.85: Type-Safe Agents That Survive Crashes
Type-safe AI agents in Python with durable execution, retries, and validated outputs.
4 min read·Kodetra Technologies
Apr 28