Colin, a context engine for keeping agent skills fresh
Hi HN — I'm the creator of FastMCP and wanted to share a new project we've open-sourced called Colin. I obviously love MCP, but I also use skills extremely heavily in my day-to-day work. Being exposed to both has made me very aware of a tension: - Anything with dynamic information, I ship over MCP. This takes work to set up and requires conversational boilerplate to refresh in every conversation. - Anything behavioral, I put in skills. They're lightweight, used automatically, and feel great. But I would never put dynamic information in a skill because keeping it up to date is a pain. And yet…
Colin, a context engine for keeping agent skills fresh launched on January 26, 2026 with 7 votes, #1,609 of 14,584 launches that month and more than 75% of that year's launches.
What it does
A context engine that treats skills as software. Contribute to PrefectHQ/colin development by creating an account on GitHub.
Colin is a context engine. Write templates that reference live sources—GitHub, Linear, Notion, HTTP endpoints—and other documents. Colin compiles them, tracks dependencies, and rebuilds only what's stale. --- name : team-status description : Current state of platform team work colin : cache : expires : 1d --- # Team Status ## In Progress {% for issue in colin.linear.issues(team='Platform', state='In Progress') %} - {{ issue.identifier }}: {{ issue.title }} ({{ issue.assignee }}) {% endfor %} ## Summary {{ ref('team/weekly-notes.md').content | llm_extract('key blockers and priorities') }} Run colin run . Colin fetches the Linear issues, resolves the reference to your weekly notes, extracts…from github.com
In the maker’s words, at launch
Hi HN — I'm the creator of FastMCP and wanted to share a new project we've open-sourced called Colin. I obviously love MCP, but I also use skills extremely heavily in my day-to-day work. Being exposed to both has made me very aware of a tension: - Anything with dynamic information, I ship over MCP. This takes work to…
Does a similar job
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I've been deeply involved in working with AI agents and large language models (LLMs) for a while now. During a recent job search, I found myself repeatedly explaining my skills and experiences to various assistants. Around the same time, I was creating content for my website to help hiring teams understand my capabilities better and make informed decisions. MCP had started to gain momentum and I saw a way to reduce my toil. So I built an MCP server that can effectively communicate my qualifications as a job candidate. This server acts as an AI-powered resume, providing an understanding of my…
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Hey HN, I noticed there are 1,000+ MCP skills on GitHub with zero way for creators to charge for them. So I built Agent37. Selling Claude skills today means asking customers to download your skill, set up Claude Code on their laptops, configure MCP servers, and pray it works. No trial, no updates, often you're just handing over the source. Agent37 lets creators upload a skill, share a link, and anyone can try it instantly (no Claude account needed). Built-in Stripe, creators keep 80%. Looking for feedback on the approach. Would you use something like this?
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SkilldocsAug 2026 · skilldocs.dev · ▲192I got fed up with Notion, so I built my dream document editor. It's all markdowned so it's easy to view skills or other agent-related documents. It's got the collaboration features I love from Figma (shared cursory and the ability to follow) and Google Docs (comments, realtime editing). Then you can export the diff and comments to an agent. I've been really liking it for talking over skill documents live on a call. I'm curious if this resonates with other people. More generally, I feel like notion is less and less relevant in an age where documents have a very different purpose and Markdown…
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