Sandbox
40 repos for context-engineering · Any agent · CodingClear
FlyFission/
nuclear-grade-context-engineering

AI agents now operate with authority. Authority without discipline is how complex systems fail. Nuclear’s control loop, ported to AI-assisted software engineering.

33
PrefectHQ/
colin

A context engine that treats skills as software.

121
deepset-ai/haystackFrameworks & SDKs

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.

26k

Privacy Code Scanner and Dataflow Context Engine for AI coding agents

130
ratel-ai/ratelFrameworks & SDKs

Context engineering for AI agents. ~80% fewer tokens. Fix tool overload. Skills and memory with in-process BM25 and semantic retrieval. Progressive Disclosure. No vector DB.

434
cloudwego/
abcoder
cloudwego/abcoderFrameworks & SDKs

deep, reliable and confidential coding-context

390
sandst1/
remind
sandst1/remindConnectors

A memory layer for AI Agents

83
Alegau03/
CTX

CTX - Context Runtime Engine for Coding Agents

143
getnao/
sylph
getnao/sylphHarnesses

The open-source company brain. Run your entire company with AI agents, skills, and a self-improving context.

196
zby/
commonplace

The theory of LLM wikis, running as one. A framework for agent-operated knowledge: typed, linked, review-gated markdown your agents execute.

88
joe960913/
Jixu

Durable single-Agent Harness for TypeScript: recoverable Threads, context continuity, explicit side effects, and a native TUI.

100
clarilayer/
clarilayer

Stop re-explaining your data to your AI every session. The individual-analyst context layer, delivered over MCP (Claude Code / Cursor / Codex).

92
hoangnb24/
repository-harness

Turn any repo into an agent-ready workspace for Claude Code, Codex, Cursor, and other coding agents.

1.2k
wquguru/
harness-books
wquguru/harness-booksTutorials & Guides

📚 Two books on harness engineering — the design philosophies behind Claude Code & Codex: constraints, query loops, context governance, multi-agent verification. harness-books.agentway.dev

3.1k

AI Badger - Local-first tool that extracts focused repo context for any AI chat (Claude, ChatGPT, Grok, etc.) without wasting tokens on irrelevant files.

35

Audit and shrink your Claude Code startup context. Measures what every skill, plugin, agent, and memory file costs in the system prompt, then reversibly disables the dead weight. No proxy, no compression.

45
virgiliojr94/
book-to-skill

Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.

30k
sparkplug604/
praxis
sparkplug604/praxisFrameworks & SDKs

Turn scattered knowledge, operational data, and history into source-linked context that your agents can inspect, explain, and reuse.

56

Portable project memory across Claude Code, Codex and OpenCode, plus token accounting measured from harness transcripts. Local file I/O, no API calls, no telemetry.

2.3k