🔁Prime Agent
A self-improving RLM agent for coding workflows and long-running autonomous tasks.
⭐ Very popular: 16k stars, gaining about 2k a week
View on GitHub ↗repo profile
momentum
durability
bus factor = how many people it takes to cover more than half the commits (6 months). 1 is a solo project; higher means the work is spread across a team. top-author share is the single busiest author's slice of those commits.
why it's a big deal
- /refine applies small, evidence-backed updates to its own harness state, never touching the immutable base prompt, a genuinely different answer to “how does an agent improve” than fine-tuning.
- Reports 95.5% on ARC-AGI-3 with Opus 5, against a 95.4% human expert baseline, on a model that scores far lower in other harnesses.
- Daemon-backed sessions and direct agent-to-agent messaging point toward agents as long-running processes, not single chat sessions.
under the hood
- A persistent IPython REPL is the single model-facing tool, files, shell, and subagents all happen through code.
- Bounded autonomous mode runs within configured turn, token, and time budgets, with user-defined quality gates.
- Built on Mario Zechner’s pi harness rather than a ground-up TUI, freeing effort for the RLM and Continual Harness layers.
our take from PR#40, 2026-08-12
star history
- PR#40 15k 2026-08-12
- now 16k + 2k since first covered
curve is sampled from GitHub's star history, plus our own daily readings since we covered it; the dashed stretch is before we first covered it, the solid line since. figures at coverage are the numbers we printed then (approx.), current count is live.
understory
Output and attention are roughly in balance.
- output, commits & releases
- clout, star velocity
output = commits & releases; clout = star velocity, both 0 to 100 monthly indices; the gap where output runs above clout is the understory. The understory →
covered in
-
the agent that rewrites its own instructions
similar projects
compare these →- 🦀 OpenClaw
24× the stars
Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞
386k ACTIVE - 🥧 pi-mono
5.6× the stars
AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI
91k ACTIVE - 📎 paperclip
4.8× the stars
The open-source app everyone uses to manage agents at work
78k ACTIVE
comments
Sign in with GitHub to add your blip on Prime Agent.