Top 10 GitHub Repos — 2026-05-18
Top 10 GitHub Repos — 2026-05-18
As of: 2026-05-18 Focus: AI tools, automations, agents, integrations, MCP, CLIs, and developer tooling. Snapshot: Current top 10 at the moment of generation — not a weekly recap.
Overview
Today's snapshot rotates entirely off the projects covered in the 2026-05-09 and 2026-05-15 digests and lands on a different cross-section of the ecosystem: the two ByteDance- and Chrome-scale platform repos that anchor the current "real product" layer of the agent stack (deer-flow, chrome-devtools-mcp), three skill / MCP backbones now sitting in five-figure star territory (caveman, serena, Skill_Seekers), and five brand-new entries from the past week — a Chinese A-share investment framework, two Hermes/agent-control templates, an interview-prep agent curriculum, and a token-tracking dashboard for Claude Code and Codex. The clearest signal is that observability and cost tracking (caveman, token-tracker) have caught up with capability as the next axis everyone is optimising.
1. caveman
- Repo: https://github.com/JuliusBrussee/caveman
- Stars: 61,758 (at time of generation)
- Category: AI Tools
- Status: Trending
A Claude Code skill that rewrites the agent's outgoing prompts in caveman-style English ("why use many token when few token do trick") and reports a measured ~65% token reduction on standard coding workflows. MIT-licensed, JavaScript, 3,441 forks, and pinned at the top of the Claude Code skills marketplace. Created 2026-04-04 and the largest viral hit of the cycle — the meme framing did more for token-efficiency adoption in six weeks than the prior six months of academic prompt-compression work.
Why it's on the list: Single-purpose skill that wins on cost-per-task today — almost free to install, almost free to remove if it backfires, immediate measurable token bill drop.
2. deer-flow
- Repo: https://github.com/bytedance/deer-flow
- Stars: 68,429 (at time of generation)
- Category: AI Agents
- Status: Popular & active
ByteDance's open-source long-horizon SuperAgent harness — sandboxes, memory, tools, skills, sub-agents, and a message gateway in one harness aimed at multi-minute-to-multi-hour tasks. LangChain / LangGraph-based with a polished Node.js / TypeScript control plane and a TikTok-grade product polish. Still shipping commits daily (819 open issues, 9,112 forks at this snapshot).
Why it's on the list: The clearest answer right now to "if I want one open-source agent harness that a non-research team could actually deploy in production, what do I install?"
3. chrome-devtools-mcp
- Repo: https://github.com/ChromeDevTools/chrome-devtools-mcp
- Stars: 39,922 (at time of generation)
- Category: MCP
- Status: Trending
Google's official Chrome DevTools MCP server — gives coding agents a Puppeteer-backed live browser they can navigate, debug, inspect network traffic in, and run profiler traces against. TypeScript, Apache-2.0, pushed today (2026-05-18) with continuous releases on npm. Already the de facto browser-control MCP for Claude Code and Cursor, replacing the homegrown Playwright shims most teams had been hand-rolling.
Why it's on the list: First browser-control MCP shipped by the browser vendor itself — closes the "agent can't reliably drive a browser" gap that has been blocking front-end QA agents.
4. serena
- Repo: https://github.com/oraios/serena
- Stars: 24,340 (at time of generation)
- Category: MCP
- Status: Popular & active
A semantic-retrieval + code-editing MCP toolkit that exposes IDE-grade language-server operations (symbol lookup, references, refactors) to any MCP client. Works alongside Claude Code, Codex, JetBrains, and Cursor; Python-based, MIT-licensed, 1,632 forks, 104 open issues. Effectively "the IDE for your agent" — replacing grep + read-file scaffolding with proper LSP-aware tool calls.
Why it's on the list: Best-installed MCP for giving agents semantic (not text-search) code understanding — measurable accuracy improvement on multi-file refactors.
5. Skill_Seekers
- Repo: https://github.com/yusufkaraaslan/Skill_Seekers
- Stars: 13,611 (at time of generation)
- Category: AI Tools
- Status: Trending
Converts documentation websites, GitHub repositories, and PDFs into Claude AI skills with automatic conflict detection. Python, MIT-licensed, AST-parser-backed, OCR support for PDFs, web-scraping for docs sites, and a hosted companion at skillseekersweb.com. 1,402 forks and 97 open issues — community-driven, with daily pushes.
Why it's on the list: Solves the "how do I get my private docs into a Claude skill" problem at scale — turns the skills marketplace from a hand-curated artifact into a generator pipeline.
6. TradingAgents-astock
- Repo: https://github.com/simonlin1212/TradingAgents-astock
- Stars: 346 (at time of generation)
- Category: AI Agents
- Status: New
A multi-agent investment-research framework adapted for Chinese A-share markets — seven analyst agents (fundamentals, sentiment, technical, risk, etc.) running a bull / bear debate over A-share data sources (Dragon-Tiger list, hot-money flow, unlock schedules). A heavy fork-and-refit of the original TradingAgents repo. Created 2026-05-13; 96 forks in five days, with the China-domestic angle driving the velocity.
Why it's on the list: Cleanest example of the "fork a generic agent framework, refit for a single regulated market" pattern that's eating bespoke quant pipelines.
7. hermes-agent-control-room
- Repo: https://github.com/shannhk/hermes-agent-control-room
- Stars: 343 (at time of generation)
- Category: AI Agents
- Status: New
A "control room"-first template for operating Hermes agents — one VPS hosts an orchestrator that fan-outs to specialist teams and orchestrated workflows, with Shell-driven provisioning and a web console. Created 2026-05-15; 54 forks in three days. Targets the Nous Research / Hermes line specifically rather than being yet another LangGraph wrapper.
Why it's on the list: Best-shaped current template for running Hermes as a fleet rather than as a single chat — the closest open-source thing to a Hermes ops console.
8. elephant-agent
- Repo: https://github.com/agentic-in/elephant-agent
- Stars: 304 (at time of generation)
- Category: AI Agents
- Status: New
A personal-model-first self-evolving AI agent. The headline pitch: the agent runs against your own local / fine-tuned model and rewrites its own context graph as it goes. Python, 23 open issues already (meaning real users on day three), and explicitly positioned against the "everyone runs Claude" default. Created 2026-05-15.
Why it's on the list: Strongest fresh entry in the "BYO-model self-evolving agent" subgenre that has been quietly building behind the Claude-Code-skill wave.
9. agent-study
- Repo: https://github.com/Callous-0923/agent-study
- Stars: 264 (at time of generation)
- Category: AI Tools
- Status: New
A 36-chapter agent-engineering curriculum (Chinese) — runnable Python files for ReAct loops, Claude Code reverse-engineering, MCP and A2A protocols, RAG, DSPy, and production observability — explicitly framed as interview prep. Created 2026-05-14 and at 264 stars / 20 forks four days later, with the interview-prep angle pushing it past the saturated "learn LangChain" cohort.
Why it's on the list: Most pragmatic recent agent-engineering course material — fully runnable Python rather than slides, and ordered by what comes up in interviews now.
10. token-tracker
- Repo: https://github.com/stormzhang/token-tracker
- Stars: 234 (at time of generation)
- Category: CLI
- Status: New
A token-usage and cost dashboard for local AI agents — custom Claude Code StatusLine, CLI dashboard with cost analysis, rate-limit monitoring, and session tracking. Python with the rich terminal UI, 23 forks, MIT-style permissive. Created 2026-05-08. Sits next to caveman as the second half of the "what are my agents actually costing me?" answer — caveman cuts tokens, token-tracker shows the bill.
Why it's on the list: The first credible cost-observability layer specifically for Claude Code + Codex stations, before paid SaaS dashboards catch up.
Honorable Mentions (Optional)
- ybuild-ai/ai-game-art-pipeline-skill — Agent skill turning AI images / videos into playable game-art assets (175 ★, created 2026-05-04).
- earthtojake/step.parts — 12,000+ open-source STEP CAD parts surfaced as an agent skill for hardware design (161 ★, 21 forks, created 2026-05-08).
- nostrband/ServiceGraph — Structured agent-skill catalog of 100k+ US professional-services firms for vendor discovery (160 ★, created 2026-05-04).
- pnegahdar/nano — A coding agent in one file, under 200 lines, zero dependencies (108 ★, created 2026-05-04).
- agent-quality-controls/slopless — Deterministic textlint rules + CLI for catching LLM "prose slop" in Markdown (122 ★, created 2026-05-16).
Sources
- caveman — https://github.com/JuliusBrussee/caveman
- deer-flow — https://github.com/bytedance/deer-flow
- chrome-devtools-mcp — https://github.com/ChromeDevTools/chrome-devtools-mcp
- serena — https://github.com/oraios/serena
- Skill_Seekers — https://github.com/yusufkaraaslan/Skill_Seekers
- TradingAgents-astock — https://github.com/simonlin1212/TradingAgents-astock
- hermes-agent-control-room — https://github.com/shannhk/hermes-agent-control-room
- elephant-agent — https://github.com/agentic-in/elephant-agent
- agent-study — https://github.com/Callous-0923/agent-study
- token-tracker — https://github.com/stormzhang/token-tracker
- ai-game-art-pipeline-skill — https://github.com/ybuild-ai/ai-game-art-pipeline-skill
- step.parts — https://github.com/earthtojake/step.parts
- ServiceGraph — https://github.com/nostrband/ServiceGraph
- nano — https://github.com/pnegahdar/nano
- slopless — https://github.com/agent-quality-controls/slopless
- GitHub search — topic:mcp, created:>=2026-05-10, stars:>100 — https://github.com/search?q=topic%3Amcp+created%3A%3E%3D2026-05-10+stars%3A%3E100&type=repositories&s=stars&o=desc
- GitHub search — topic:ai-agents, created:>=2026-05-10, stars:>100 — https://github.com/search?q=topic%3Aai-agents+created%3A%3E%3D2026-05-10+stars%3A%3E100&type=repositories&s=stars&o=desc
- GitHub search — topic:agent-skill, created:>=2026-05-01, stars:>50 — https://github.com/search?q=topic%3Aagent-skill+created%3A%3E%3D2026-05-01+stars%3A%3E50&type=repositories&s=stars&o=desc
- GitHub search — topic:mcp-server, pushed:>=2026-05-12, stars:>200 — https://github.com/search?q=topic%3Amcp-server+pushed%3A%3E%3D2026-05-12+stars%3A%3E200&type=repositories&s=stars&o=desc
- GitHub search — in:name agent, created:>=2026-05-10, stars:>100 — https://github.com/search?q=in%3Aname+agent+created%3A%3E%3D2026-05-10+stars%3A%3E100&type=repositories&s=stars&o=desc
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