Tutorials Intermediate
Preserved Thinking: Build a Prefix-Drift Guard in Python
Claude now 400s agents that edit history. Catch the edit before the API does.
13 min read·Kodetra Technologies
8d agoGuides
AI Guides for Builders
How-to content for builders, indie hackers, and AI engineers. Less theory, more shipped code.
Tutorials 
Tutorials Intermediate
OpenAI Decisions API: Calibrate Thresholds on Labeled Data
Use /v1/decisions as a $0.10 guardrail, then sweep thresholds and escalate only the unsure band.
11 min read·Kodetra Technologies
12d ago
Tutorials Intermediate
Haiku 5.5 Triage: Measure Effort, Then Route by Cost
Benchmark Haiku 5.5 effort levels on your own tickets, then route cheap-first.
10 min read·Kodetra Technologies
14d ago
Tutorials Intermediate
OpenAI Dots: Rebuild Its Custom Rules as a Python Gate
OpenAI dots have no API yet. Build their allow/ask/hand-off rules in Python.
13 min read·Kodetra Technologies
14d ago
Tutorials Intermediate
OpenAI Agents API: Run a Data Audit in a Cloud Sandbox
Run a durable Codex-powered agent in OpenAI's hosted sandbox with a custom tool and file outputs.
14 min read·Kodetra Technologies
21d ago
Tutorials Intermediate
Codex Security CLI: Gate PRs on High Severity
Scan a PR diff with OpenAI's Codex Security, cap the spend, and fail CI on high-severity bugs.
13 min read·Kodetra Technologies
21d ago
Tutorials Intermediate
OpenAI Ultrafast: Pay 6x Only When Latency Matters
A Python router that buys Ultrafast speed only where users wait, with fallback and cost tracking.
9 min read·Kodetra Technologies
21d ago
Tutorials Intermediate
GPT-6.1 Sol Computer Use: Build a Browser Agent
Drive a real browser with GPT-6.1 Sol's batched computer tool, with guardrails.
8 min read·Kodetra Technologies
22d ago
Tutorials Intermediate
Sonnet 5.5 Drops tool_choice: Build a Strict Tool Router
Forced tool use now 400s on Claude Sonnet 5.5. Replace it with strict tools and a retry guard.
9 min read·Kodetra Technologies
23d ago
Tutorials Intermediate
Opus 5.5 Progress Updates: Stop Silent Agent Turns
Opus 5.5 moved agent narration into thinking blocks. Stream it back with display updates and nudges.
15 min read·Kodetra Technologies
27d ago
Tutorials Intermediate
MiMo-V2.6 Bug Triage: Screenshot, Voice Note and Logs
Build an agent that turns a screenshot, voice note and logs into a ticket with Xiaomi's MiMo-V2.6.
14 min read·Kodetra Technologies
28d ago
Tutorials Advanced
Opus 5.5 Background Compaction: Agents That Never Stall
Summarize long Claude Opus 5.5 sessions in a background thread and swap the result in, no pause.
15 min read·Kodetra Technologies
28d agoPage 1 of 6