GitHub Trending 2025: The Agent Runtime Vertical Nobody Is Talking About

I went down a rabbit hole this morning reading the April and October 2025 Juejin GitHub trending roundups back to back, and the thing that finally crystallized for me is that an entire vertical of AI agent infrastructure has been building on GitHub all year, and almost none of the consumer AI tool roundups are talking about it. The Juejin posts on best AI tools of 2025 and the December 2025 IDE rankings keep putting Cursor, Claude Code, GitHub Copilot, and v0 on the same axis, but the GitHub trending posts from April and October keep surfacing a totally different category of tooling — Agent-S from Simular AI for GUI automation, Graphiti from Zep AI for memory graphs, supermemory for persistent context, FastMCP for plugin frameworks, and TradingAgents-CN for multi-agent financial workflows. These tools do not compete with Cursor. They compete with each other for the role of agent runtime. I would not have written that sentence six months ago, and I want to put it down somewhere I can find it. The piece that pushed me over the edge was the April 2025 GitHub trending recap, which led with cursor-free-vip — a tool for bypassing Cursor Pro, which is itself a fascinating signal about willingness to pay that I will come back to — and then listed Agent-S, FastMCP, Graphiti, and supermemory in the same top ten. To be fair I had heard of Graphiti and supermemory before, but I had not internalized that they were trending in the same month alongside GUI-agent and plugin-framework tooling, which told me there was a coherent vertical forming rather than four unrelated repos having a good month. The October 2025 list doubled down. Agent-S appeared again, claude-cookbooks showed up as the de facto Anthropic cookbook, supermemory was still in the rotation, and TradingAgents-CN was the financial-agent entry. Same vertical, same kind of tooling, six months apart. Honestly I am not sure if this is a vertical yet or just a hot category, but the consistency across two separate list snapshots is enough for me to treat it as a real pattern. The meta-pattern I want to put down before I forget it is that the consumer AI tool roundups and the GitHub trending roundups are answering different questions, and I think most readers are reading only one of them. The consumer roundups answer which AI tool should I pay for today. The GitHub trending roundups answer what is the open-source agent stack actually shipping in 2025. The two are not in conflict, they are just orthogonal. Cursor and Claude Code are the IDEs that engineers use to write code. Agent-S, Graphiti, FastMCP, and supermemory are the runtime infrastructure that those IDEs, and the agents they spawn, call into when the task is do this thing on my computer or remember this across sessions. I am a little skeptical of any single AI tool roundup that does not mention the runtime layer, because the IDE without the runtime is a code editor with autocomplete and nothing else. What I think this means practically, at least for me, is that I have started reading the GitHub trending recaps as the leading indicator and the consumer roundups as the lagging one. The consumer lists tell me what engineers are paying for. The GitHub trending lists tell me what engineers are building on, and what they will be paying for in twelve to eighteen months when the runtime layer stabilizes into products. I have not stress-tested Agent-S or supermemory myself the way I have with Cursor and Claude Code, so I want to actually run them for a quarter before I oversell or undersell them, but the fact that the same vertical keeps trending across two separate 2025 snapshots is enough for me to bookmark the category. The cursor-free-vip entry, for what it is worth, is the cleanest evidence I have read this year that the willingness-to-pay ceiling is lower than the headline pricing implies. I will reassess in three months. The last time I said that I was bouncing between Cursor and Claude Code for coding and ChatGPT for everything else, which is still roughly where I land. What has changed is that I now read the GitHub trending recaps as seriously as I read the consumer roundups, and I think that shift is going to age well. Give it a year and the agent-runtime vertical will probably have a Cursor of its own.