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
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AI Guides for Builders
How-to content for builders, indie hackers, and AI engineers. Less theory, more shipped code.
Tutorials 
Tutorials Intermediate
Agent Tool Broker: Identity, Audit Log, Kill Switch
Build an out-of-model tool broker in Python: per-agent identity, scoped policy, tamper-evident logs.
10 min read·Kodetra Technologies
Yesterday
Tutorials Intermediate
Blocked Is an Alert: Egress Gates for Claude Agents
Build a Python egress gate that stops the four workarounds Anthropic saw Claude use on live sites.
12 min read·Kodetra Technologies
Yesterday
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
6d ago
Tutorials Intermediate
Reflection Beam: Get Agent-Ready Before the Weights Drop
Build an effort-routing tool-loop client for Beam's OpenAI-compatible API and size the self-host bill.
8 min read·Kodetra Technologies
7d ago
Tutorials Intermediate
Claude Code Mods: Build a Fail-Closed Bash Guard in JS
Write a Claude Code mod that blocks, asks, and logs risky shell commands, then test it.
16 min read·Kodetra Technologies
8d 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
13d 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
14d ago
Tutorials Intermediate
Claude 950-Agent Swarm: Build a Funnel in Python
Rebuild the 21-hour enzyme-hunt pattern: cheap triage, deep read, budget cap, resumable.
11 min read·Kodetra Technologies
15d 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
15d ago
Tutorials Intermediate
Stop Claude Code From Deleting Your Files
A Claude Code agent deleted 48,000 files in 103 seconds. Build the setup that stops it.
10 min read·Kodetra Technologies
15d ago
Tutorials Intermediate
Claude Code Projects: Retire an API Across 3 Repos
Set up Claude Code's new Projects beta to run coordinated, parallel AI coding threads across repos.
11 min read·Kodetra Technologies
18d agoPage 1 of 10