second-claude-code

English | 한국어

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Second Claude Code — Work OS for Knowledge Work

You type one prompt. Researchers crawl 20+ sources. An analyst finds patterns. A writer drafts 3,000 words — and before you even see it, five reviewers are already tearing the draft apart. One checks the logic. Another attacks the weak points. A third fact-checks every number.

One prompt. Full cycle. No duct tape between plugins.

This isn't a coding assistant. It's a work OS — it runs the full knowledge-work cycle autonomously: Plan → Do → Check → Act. Research, analysis, writing, and quality assurance in a single automated loop.

_{Image created with SceneSteller}

Docs · 한국어 문서 · User Manual · 사용 매뉴얼 · Skill Guides · GitHub Issues · 한국어 README

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System at a Glance

flowchart TB
    U[One user prompt] --> R[Prompt router]
    R --> O{External plugin wins?}
    O -->|yes| E[Installed plugin capability]
    O -->|no| P[Second Claude PDCA]
    E --> P
    P --> PLAN[Plan: research and analyze]
    PLAN --> DO[Do: write or build]
    DO --> CHECK[Check: review and verify]
    CHECK --> ACT[Act: refine, commit, or route back]
    ACT --> OUT[Finished artifact plus cycle memory]

Second Claude Code is the control loop. The v1.4.0 orchestrator sits in front of that loop and gives installed plugins the first shot when they are a stronger fit.

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What's New in v1.5.2

Deep Interview + Code Engineering Lane — clearer requirements before safer execution. v1.5.2 adds the 18th public command, /second-claude-code:deep-interview, and tightens domain=code PDCA work with stricter planning, validation, cleanup, and handoff contracts.

• Deep Interview — Socratic requirements discovery with Round 0 topology confirmation, per-component ambiguity scoring, ontology convergence, Korean/session-language preservation, and approval-gated handoff into ralplan/ultragoal/team.
• Executable code plans — Plan now requires acceptance criteria, rollback path, complexity, and human approval status for risky work.
• Worker-validator split — Check requires validator/reviewer proof instead of trusting the implementer's self-report.
• Stage reports for long work — non-trivial Do phases record branch/worktree isolation, stage progress, verification, and next action.
• Cleanup before handoff — Act requires clean-ai-slop/simplification, relevant verification, measured performance claims when applicable, and issue/PR/local handoff state.
• Public docs aligned — README, architecture docs, Deep Interview guides, PDCA skill guides, stage contracts, and contract tests now describe the same 18-skill surface.

See docs/RELEASE-v1.5.2.md for the release notes and validation.

Previously in v1.5.0...

What's New in v1.5.0

unblock skill — zero-key adaptive fetch chain. The 16th skill closes the gap where blocked URLs (4xx, captcha, WAF, JS-heavy SPAs) silently degraded research output. Eevee researcher and the auto-router now invoke a 9-phase escalation pipeline before giving up.

Phase 0a → 0b → 0c → 0d → 1 → 2 → 3 → 4 → 5 → 6
public APIs → Jina → yt-dlp → keyword → curl variants →
TLS rotation → LightPanda → Playwright → free archives → optional paid

• 11 public-API routes — Reddit, HN, arXiv, Bluesky, GitHub, NPM, Stack Exchange, Wikipedia, Mastodon (any host), Lemmy (any host), oEmbed fallback
• TLS multi-rotation Phase 2 — chrome131 → safari17_0 → firefox133 with cookie carry between attempts
• Hidden API discovery Phase 4 — Playwright network intercept surfaces internal JSON endpoints when the rendered HTML fails validation
• Free archive cluster Phase 5 — Wayback + archive.today + AMP raced in parallel; RSS/Atom discovery; OG-tag rescue
• Operational hardening — SSRF guard rejects RFC1918/loopback/cloud-metadata hosts; schema_version + idempotency_key envelope; stagnation detection short-circuits to archive after 3 same-reason failures
• 397 tests (394 pass, 0 fail, 3 skipped)

See docs/RELEASE-v1.5.0.md for full release notes and verification.

Previously in v1.4.0...

What's New in v1.4.0

Cross-Plugin Orchestrator — Second Claude Code now discovers and commands all your installed Claude Code plugins automatically.