Not just configs. A complete system: skills, instincts, memory optimization, continuous learning, security scanning, and research-first development. Production-ready agents, skills, hooks, rules, MCP configurations, and legacy command shims evolved over 10+ months of intensive daily use building real products.
Works across Claude Code, Codex, Cowork, and other AI agent harnesses.
| Topic | What You'll Learn |
|---|
| Token Optimization | Model selection, system prompt slimming, background processes |
| Memory Persistence | Hooks that save/load context across sessions automatically |
| Continuous Learning | Auto-extract patterns from sessions into reusable skills |
| Verification Loops | Checkpoint vs continuous evals, grader types, pass@k metrics |
| Parallelization | Git worktrees, cascade method, when to scale instances |
| Subagent Orchestration | The context problem, iterative retrieval pattern |
What's New
v1.9.0 — Selective Install & Language Expansion (Mar 2026)
- Selective install architecture — Manifest-driven install pipeline with
install-plan.js and install-apply.js for targeted component installation. State store tracks what's installed and enables incremental updates.
- 6 new agents —
typescript-reviewer, pytorch-build-resolver, java-build-resolver, java-reviewer, kotlin-reviewer, kotlin-build-resolver expand language coverage to 10 languages.
- New skills —
pytorch-patterns for deep learning workflows, documentation-lookup for API reference research, bun-runtime and nextjs-turbopack for modern JS toolchains, plus 8 operational domain skills and mcp-server-patterns.
- Session & state infrastructure — SQLite state store with query CLI, session adapters for structured recording, skill evolution foundation for self-improving skills.
- Orchestration overhaul — Harness audit scoring made deterministic, orchestration status and launcher compatibility hardened, observer loop prevention with 5-layer guard.
- Observer reliability — Memory explosion fix with throttling and tail sampling, sandbox access fix, lazy-start logic, and re-entrancy guard.
- 12 language ecosystems — New rules for Java, PHP, Perl, Kotlin/Android/KMP, C++, and Rust join existing TypeScript, Python, Go, and common rules.
- Community contributions — Korean and Chinese translations, security hook, biome hook optimization, video processing skills, operational skills, PowerShell installer, Antigravity IDE support.
- CI hardening — 19 test failure fixes, catalog count enforcement, install manifest validation, and full test suite green.
v1.8.0 — Harness Performance System (Mar 2026)
- Harness-first release — ECC is now explicitly framed as an agent harness performance system, not just a config pack.
- Hook reliability overhaul — SessionStart root fallback, Stop-phase session summaries, and script-based hooks replacing fragile inline one-liners.
- Hook runtime controls —
ECC_HOOK_PROFILE=minimal|standard|strict and ECC_DISABLED_HOOKS=... for runtime gating without editing hook files.
- New harness commands —
/harness-audit, /loop-start, /loop-status, /quality-gate, /model-route.
- NanoClaw v2 — model routing, skill hot-load, session branch/search/export/compact/metrics.
- Cross-harness parity — behavior tightened across Claude Code, Cursor, OpenCode, and Codex app/CLI.
- 997 internal tests passing — full suite green after hook/runtime refactor and compatibility updates.
v1.7.0 — Cross-Platform Expansion & Presentation Builder (Feb 2026)
- Codex app + CLI support — Direct
AGENTS.md-based Codex support, installer targeting, and Codex docs
frontend-slides skill — Zero-dependency HTML presentation builder with PPTX conversion guidance and strict viewport-fit rules- 5 new generic business/content skills —
article-writing, content-engine, market-research, investor-materials, investor-outreach
- Broader tool coverage — Cursor, Codex, and OpenCode support tightened so the same repo ships cleanly across all major harnesses
- 992 internal tests — Expanded validation and regression coverage across plugin, hooks, skills, and packaging
v1.6.0 — Codex CLI, AgentShield & Marketplace (Feb 2026)
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