Tutorials Intermediate
Opus 4.8 Mid-Convo System Messages in Python (Cache-Safe)
Use Opus 4.8 role:system messages mid-conversation to update agent rules without invalidating cache.
10 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
Gemini Code Execution: Build a Self-Fixing Analyst
Use Gemini 3.5 Flash code execution to write Python that fixes itself in a loop.
10 min read·Kodetra Technologies
4d ago
Tutorials Intermediate
GLM-4.7 in Python: Build a Cheap Coding Assistant
Use Zhipu's GLM-4.7 through the OpenAI SDK to build a tool-calling coding assistant for pennies.
9 min read·Kodetra Technologies
4d ago
Tutorials Intermediate
NVIDIA Verified Skills: Sign and Verify Agent Skills
Build a signed AI agent skill with a skill card using OpenSSF Model Signing, then verify it.
11 min read·Kodetra Technologies
4d ago
Tutorials Intermediate
Gemini Interactions API: Build Stateful AI Agents
Use Gemini's new Interactions API and previous_interaction_id to build stateful agents in Python.
9 min read·Kodetra Technologies
6d ago
Tutorials Intermediate
Gemini 3.5 Flash Function Calling: Build a Tool-Using Agent
Wire Gemini 3.5 Flash to your own Python functions and run a real multi-step agent loop.
8 min read·Kodetra Technologies
6d agoMore guides like this?
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Tutorials Intermediate
DSPy GEPA: Auto-Optimize AI Agent Prompts
Use DSPy GEPA to auto-evolve prompts with reflection and beat hand-tuned baselines.
4 min read·Kodetra Technologies
9d ago
Tutorials Intermediate
OpenAI Agents SDK Guardrails: Block Bad Input Fast
Use input guardrails and tripwires to stop bad input before your costly OpenAI agent runs.
4 min read·Kodetra Technologies
10d ago
Frontend Intermediate
React 19.2 Activity API: Hide Components Without State Loss
Use <Activity> in React 19.2 to hide UI while preserving state, DOM, and scroll position.
8 min read·Kodetra Technologies
16d ago
Tutorials Intermediate
LangGraph Subagents: Stop AI Agent Context Bloat
Use LangGraph v0.4 subagents to isolate tool noise and keep main agent context clean.
4 min read·Kodetra Technologies
19d ago Tutorials Intermediate
LangGraph Subagents: Stop AI Agent Context Bloat
Use LangGraph v0.4 subagents to isolate tool noise and keep main agent context clean.
4 min read·Kodetra Technologies
19d ago
Database Intermediate
PostgreSQL 18 UUIDv7: Better Primary Keys
Use Postgres 18 uuidv7() for ordered primary keys, smaller indexes, fewer page splits.
8 min read·Kodetra Technologies
19d agoPage 1 of 2