Composable foundries and live self-evolving harnesses

OpenAutoCoder

Runtime self-evolving software engineering agent that starts from a minimal bash scaffold and rewrites its own tools and scaffold while solving real issues.

Use caseUse it to run an agent that expands its own capabilities on the fly against SWE-bench style GitHub issues.

Darwin-Agent

Harness foundry that composes typed processors across nine dimensions, adapts configs from traces, and evolves harnesses plus models from reward-annotated trajectories.

Use caseUse it to forge reusable coding or research harnesses, then let the meta-loop search better processor stacks without rewriting the agent.

HarnessLab

Zero-external-dependency Python reimplementation of a full coding-agent architecture with plugins, nested delegation, MCP, worktrees, and a local GUI.

Use caseUse it to run a complete local-model coding loop with session persistence and custom agent profiles without Rust or TypeScript toolchains.

open-gsd

Meta-prompting and context-engineering system that drives agents through discuss-plan-execute-verify-ship phases in fresh subagent windows to avoid context rot.

Use caseUse it to install phase commands into your preferred coding agent and ship milestones with structured state that survives compaction.

rivet-dev

Lightweight server that runs inside any sandbox and exposes HTTP/SSE control for coding agents so you can drive them remotely with streaming and permissions.

Use caseUse it to install a static binary into E2B or Docker sandboxes and control Claude-style or OpenCode agents over the network from your app.

opensandbox-group

General-purpose sandbox platform with multi-language SDKs, CLI, MCP, Docker/Kubernetes runtimes, and built-in command, filesystem, and code-interpreter environments.

Use caseUse it to spin up isolated coding-agent or GUI-agent environments with a unified API for local or cluster deployment.

prakashkagitha

Research program and code where a fixed small model mines its own failures and redesigns its harness under a verified non-regression gate.

Use caseUse it to evolve a minimal draft-write_test-fix harness with Haiku-class models and measure SWE-bench lifts without weight updates.

BA-CalderonMorales

Clean-room Go implementation of production coding-agent harness patterns with TUI, OpenRouter/Anthropic support, and local-first defaults.

Use caseUse it to study or extend a minimal systems-language harness that boots a terminal UI and talks to local or remote models.

AgentBoardTT

CLI plus SDK coding agent claimed to hit perfect scores on an internal Harness-Bench across multiple providers.

Use caseUse it to run a provider-agnostic coding loop that ships as both interactive CLI and embeddable SDK.

easyinplay

Composition orchestrator that assembles upstream skills and agents via manifests into a gated BDD-SDD-TDD workflow without vendoring code.

Use caseUse it to wire gstack, GSD, and superpowers-style packs into one discuss-plan-build-verify-ship engine with checkpoints.

bishopZ

Lifecycle system combining persistent wiki-style memory with staged skill discipline and human gates across an eleven-stage idea pipeline.

Use caseUse it to clone a complete on-disk agent workflow that moves ideas from backlog through build and growth with explicit sign-off.

langchain-ai

Open-source asynchronous coding agent built on Deep Agents that plans, codes, reviews, and opens PRs from GitHub issues or a dashboard.

Use caseUse it to deploy an internal software-factory agent that researches repos, validates changes, and delivers pull requests in isolated environments.

Fzkuji

CLI that turns an LLM into a desktop GUI agent with iterative visual grounding, memory, and observe-verify-plan-dispatch loop.

Use caseUse it to automate desktop tasks from natural language with screenshot-based element grounding and verification.