Tutorials Intermediate
Anthropic SDK v1.0: The Silent httpx2 Mock Trap
Upgrade to anthropic>=1 without your respx mocks and OTel traces going quietly blind.
13 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 Advanced
Claude Browser Toolset: Ref Targeting Over Pixels
Wire browser_toolset_20260801 to Playwright: ref targeting, batched turns, halt-on-failure.
15 min read·Kodetra Technologies
7d ago
Tutorials Intermediate
Claude Skills API Is GA: Ship a Versioned Skill
Upload, version and pin a custom Agent Skill on the Claude API now that /v1/skills is GA.
12 min read·Kodetra Technologies
8d ago
Tutorials Intermediate
Script Vercel's fx Agent: Headless Runs in CI
Drive Vercel Labs' fx coding agent from scripts with fx ask --json, hard limits, and CI safety.
15 min read·Kodetra Technologies
8d ago
Machine Learning Advanced
Detect AI Text: Build a SynthID Watermark Scorer
Score any text for Claude-style SynthID watermarks in Python, with real measured g-values.
12 min read·Kodetra Technologies
9d ago
Tutorials Intermediate
Build a Self-Verifying Agent With Grok 4.6 in Python
Grok 4.6 self-verifies during long agent runs. Build a Python coding agent that checks its own work.
9 min read·Kodetra Technologies
15d ago
Tutorials Intermediate
Muse Code: Async Agents That Survive a Crash
Install Meta's Muse Code, run async agents, and recover long jobs from its crash-safe log.
10 min read·Kodetra Technologies
16d ago
Tutorials Intermediate
Claude Code Subagents: Build a Parallel Review Fleet
Define custom .claude/agents specialists and fan them out in parallel to review code.
11 min read·Kodetra Technologies
16d 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
18d ago
Tutorials Intermediate
Gate Every PR With Claude Code Security Reviews
Wire Anthropic's /security-review and GitHub Action to catch SQLi, XSS and RCE before merge.
8 min read·Kodetra Technologies
23d ago
Tutorials Intermediate
DeepSeek V4-Flash Tool Loop: A Coding Agent for Cents
Build an autonomous file-editing coding agent on DeepSeek V4-Flash's tool-calling API for pennies.
9 min read·Kodetra Technologies
24d 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
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