Articles tagged “claude-code”
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Claude Opus 5.5 in Claude Code: Defaults, Effort, and Cost
Claude Code 2.1.280 points the opus alias and the default model at Opus 5.5. Measured per-turn cost, the new medium effort default, and how to pin Opus 5.
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Claude Agent SDK SessionStore: Managed Postgres or Valkey
Managed Postgres or Valkey for a Claude Agent SDK SessionStore on DigitalOcean. Both reference adapters tested: stored bytes, connections, the eviction trap.
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Claude Code AGENTS.md: When It Loads and When It Doesn't
Claude Code reads AGENTS.md since 2.1.277, unless a CLAUDE.md sits above it or feature flags are off. Eight measured runs, plus the import that always works.
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Claude Code OpenTelemetry: Test the Export Locally First
What Claude Code sends over OpenTelemetry, measured with a 50-line OTLP receiver and ten headless runs: exit flush, redaction, three silent failure modes.
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Claude Code MCP Timeout in Headless Runs: 3 Knobs Measured
MCP_TIMEOUT, MCP_TOOL_TIMEOUT and the new CLAUDE_CODE_MCP_STARTUP_WAIT_MS explained and measured against a deliberately slow MCP server under claude -p.
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Claude Agent SDK SessionStore on DigitalOcean Spaces
Mirror Claude Agent SDK sessions to DigitalOcean Spaces with the reference S3 adapter: tested end to end, with the settings and per-session cost that follow.
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Claude Agent SDK Hosting: Droplet or App Platform?
Where to host a Claude Agent SDK app on DigitalOcean, a Droplet or App Platform, decided by the SDK's subprocess model, measured memory and disk, and price.
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Claude Code Plugin Eval: Test a Plugin Against a Baseline
How claude plugin eval works in Claude Code 2.1.269: the case files, six grader types, the no-plugin baseline delta, what a real run costs, and the CI gate.
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Claude Code Effort Levels: Cost, Caps, and maxEffortLevel
How Claude Code effort levels change token spend, which models support xhigh and max, where /effort saves, and how the new maxEffortLevel setting caps a team.
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CodeRabbit vs Claude Code Review: Cost and Coverage
CodeRabbit bills per developer, Anthropic's Code Review bills per review. The break-even math, what each one actually catches, and a cheaper middle path.
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Claude Code /skill-doctor: Find Unused Skills and Their Cost
What Claude Code /skill-doctor reports, why every installed skill costs context on each turn, the 1% listing budget, and how to prune with skillOverrides.
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Claude Code Without Permission Prompts: Unattended VPS Setup
How to run Claude Code unattended with --permission-prompts none, auto mode, and the Bash sandbox on a Linux VPS, plus a hardened settings file you can copy.
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Claude Cowork Skills: Port Your Claude Code SKILL.md Files
Claude Cowork does not read ~/.claude/skills. How to port a Claude Code SKILL.md into Cowork: six allowed frontmatter fields, the 200-character cap, ZIP shape.
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Claude Code Design Skill: Draft UI Artboards in the CLI
The Claude Code /design skill drafts editable UI artboards as an artifact. What it produces, the plan and version gates, and how to get code from it.
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Claude Code Self-Hosted Runners: Sizing and Cost Guide
What a Claude Code self-hosted runner needs: host requirements, per-session CPU and memory, the egress allowlist, and how many runners a team must run.
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Claude Code Status Line: Prompt Cache Fields
The prompt_cache object Claude Code v2.1.251 added to the status line JSON: all twelve fields, what warm and misses really mean, and two tested scripts.
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Claude Code PreModelSwitch Hook: Block or Confirm /model
How Claude Code's PreModelSwitch and PostModelSwitch hooks work: the input fields, allow/ask/deny decisions, matcher rules, and three tested example scripts.
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Claude Code Restricted Mode: What --restricted Blocks
What Claude Code's --restricted flag does: the tools it removes, the settings files it ignores, how to hand a tool back with --tools, and when to use it.
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Claude Code Credential Masking: Keep Secrets Out of Bash
How to keep API keys and tokens out of Claude Code's Bash sandbox: deny vs mask mode, the tlsTerminate requirement, and settings.json examples that work.
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Claude Code Prompt Caching: What Breaks It and the TTL Fix
How Claude Code prompt caching works, the eight actions that invalidate it, what a miss costs, and the new promptCacheTtl and subagentPromptCacheTtl settings.
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Claude Code Auto Mode: A Configuration Guide
Claude Code auto mode explained: the classifier's decision order, what it blocks by default, the autoMode settings block, and fixing Blocked by classifier.
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Claude Code Plugin Tutorial: Build One and Share It
A Claude Code plugin tutorial with the exact directory layout, plugin.json fields, a working skill, and the marketplace.json that lets a team install it.
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Claude Agent SDK vs Cline SDK: Which to Embed in 2026
Claude Agent SDK vs Cline SDK, checked against both projects' docs and npm: licensing, model lock-in, native binary vs pure TypeScript, and who wins.
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Run Claude Code on a Schedule: 3 Hosts Compared
How to run Claude Code unattended on a schedule: the headless flags that survive cron, and GitHub Actions vs a VPS vs your own machine compared.
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Lovable vs Claude Code: Which Builds Your App in 2026?
Lovable and Claude Code solve different problems. A verified 2026 comparison: pricing, generated stack, code ownership, and when to use each one.
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Claude Code Hooks: A Practical Guide
A practical guide to Claude Code hooks. The events worth knowing, exit code semantics, matcher syntax, and working examples you can copy into settings.json.
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Claude Code Skills Tutorial: Write Your First SKILL.md
A hands-on Claude Code skills tutorial. Where skill files live, which frontmatter fields matter, and a complete working SKILL.md you can copy today.
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Claude Code Subagents: A Practical Guide
A practical guide to Claude Code subagents. Where agent files live, every frontmatter field that matters, delegation, and a working example agent.
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CLAUDE.md Best Practices: What to Put In, What to Leave Out
CLAUDE.md best practices from daily use. File locations and precedence, the under-200-line rule, import syntax, and what belongs in a skill instead.