varun
@apvarun.com
Indiehacker - Engg. Lead from 🇳🇱
Currently https://sketchnote.app
Curated product launches - https://launches.uicomet.com
Gradients - https://gradients.party
👨💻 https://apvarun.com
Currently https://sketchnote.app
Curated product launches - https://launches.uicomet.com
Gradients - https://gradients.party
👨💻 https://apvarun.com
Building with agents? Save these:
dev.fast
AST-based code review, DB diagrams, and agent trajectory inspection
skills.lassejlv.dk/skills/build-g…
GPUI guidance for state, accessibility, tests, and packaging
flask.do
Turn spoken and drawn video feedback into timestamped agent comments
…
dev.fast
AST-based code review, DB diagrams, and agent trajectory inspection
skills.lassejlv.dk/skills/build-g…
GPUI guidance for state, accessibility, tests, and packaging
flask.do
Turn spoken and drawn video feedback into timestamped agent comments
…
Whiteboard by /dev/fast — The canvas for thoughtful software
Whiteboard is an open-source canvas for thoughtful software development. Critique interactive visualizations, diffs, and agent trajectories, all from one interface.
dev.fast
October 3, 2026 at 11:36 AM
Building with agents? Save these:
dev.fast
AST-based code review, DB diagrams, and agent trajectory inspection
skills.lassejlv.dk/skills/build-g…
GPUI guidance for state, accessibility, tests, and packaging
flask.do
Turn spoken and drawn video feedback into timestamped agent comments
…
dev.fast
AST-based code review, DB diagrams, and agent trajectory inspection
skills.lassejlv.dk/skills/build-g…
GPUI guidance for state, accessibility, tests, and packaging
flask.do
Turn spoken and drawn video feedback into timestamped agent comments
…
here are 5 agent-building resources worth saving 👇
- cube.computer/ - cloud computer that keeps coding-agent sessions running and separates work by worktree
- harnessrouter.ai/ - one API to run agent harnesses in isolated sandboxes, self-hosted or managed
- cube.computer/ - cloud computer that keeps coding-agent sessions running and separates work by worktree
- harnessrouter.ai/ - one API to run agent harnesses in isolated sandboxes, self-hosted or managed
Cube: an always-on cloud computer for Claude Code & Codex
Run coding agents on your Mac or a personal cloud computer. Keep projects, terminals, and previews together in Cube.
cube.computer
September 29, 2026 at 4:43 AM
here are 5 agent-building resources worth saving 👇
- cube.computer/ - cloud computer that keeps coding-agent sessions running and separates work by worktree
- harnessrouter.ai/ - one API to run agent harnesses in isolated sandboxes, self-hosted or managed
- cube.computer/ - cloud computer that keeps coding-agent sessions running and separates work by worktree
- harnessrouter.ai/ - one API to run agent harnesses in isolated sandboxes, self-hosted or managed
here are 4 builder tools that take a different route around the usual stack. save these 👇
- devfra.me/ - define a devtool once, then mount it in any framework, a CLI, a static report, or an agent
- github.com/lovablelabs/oj - Rust-native React builds aimed at lower memory use and faster cold start
- devfra.me/ - define a devtool once, then mount it in any framework, a CLI, a static report, or an agent
- github.com/lovablelabs/oj - Rust-native React builds aimed at lower memory use and faster cold start
Build a devtool once. Mount it anywhere.
Devframe is a framework-neutral foundation for devtools. One definition becomes a Web Standard handler you can mount into any host framework, ship as a CLI or static report, and expose to coding agent...
devfra.me
September 17, 2026 at 4:14 PM
here are 4 builder tools that take a different route around the usual stack. save these 👇
- devfra.me/ - define a devtool once, then mount it in any framework, a CLI, a static report, or an agent
- github.com/lovablelabs/oj - Rust-native React builds aimed at lower memory use and faster cold start
- devfra.me/ - define a devtool once, then mount it in any framework, a CLI, a static report, or an agent
- github.com/lovablelabs/oj - Rust-native React builds aimed at lower memory use and faster cold start
Reposted by varun
I also found this giant list, which is easy to lose an afternoon to:
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
September 15, 2026 at 5:53 AM
I also found this giant list, which is easy to lose an afternoon to:
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
I also found this giant list, which is easy to lose an afternoon to:
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
September 15, 2026 at 5:53 AM
I also found this giant list, which is easy to lose an afternoon to:
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
github.com/darelova/Aweso…
Drop your best design resource below. I’m always looking for sites that are useful, not just pretty.
here are 4 links worth saving if you're building an indie app 👇
- discoverindieapps.com / list an iOS app, pay once, and get search/category visibility with optional featured placement
- super-easy-apps.kit.com/app-creator / an agent skill to add Xcode proj scaffolding, build, and cleaner errors
- discoverindieapps.com / list an iOS app, pay once, and get search/category visibility with optional featured placement
- super-easy-apps.kit.com/app-creator / an agent skill to add Xcode proj scaffolding, build, and cleaner errors
Discover Indie iOS Apps
Discover hand-picked iOS apps built by independent developers.
discoverindieapps.com
September 7, 2026 at 8:45 AM
here are 4 links worth saving if you're building an indie app 👇
- discoverindieapps.com / list an iOS app, pay once, and get search/category visibility with optional featured placement
- super-easy-apps.kit.com/app-creator / an agent skill to add Xcode proj scaffolding, build, and cleaner errors
- discoverindieapps.com / list an iOS app, pay once, and get search/category visibility with optional featured placement
- super-easy-apps.kit.com/app-creator / an agent skill to add Xcode proj scaffolding, build, and cleaner errors
here are 5 links from this week for people building agent-ready software 👇
- danny.md — free, remixable Markdown skills, prompts, and files for AI agents
- sidebranch.dev — compare running UI changes across Git worktrees in side-by-side browser panes
M
- danny.md — free, remixable Markdown skills, prompts, and files for AI agents
- sidebranch.dev — compare running UI changes across Git worktrees in side-by-side browser panes
M
danny.md — files for agents
Free markdown for agents. Prompts, skills, and files I use.
danny.md
September 5, 2026 at 8:22 AM
here are 5 links from this week for people building agent-ready software 👇
- danny.md — free, remixable Markdown skills, prompts, and files for AI agents
- sidebranch.dev — compare running UI changes across Git worktrees in side-by-side browser panes
M
- danny.md — free, remixable Markdown skills, prompts, and files for AI agents
- sidebranch.dev — compare running UI changes across Git worktrees in side-by-side browser panes
M
here are 4 developer tools worth saving from last week👇
- difftastic.wilfred.me.uk — syntax-aware diffs that ignore formatting noise and show real line numbers
- emulator.wtf — run Android cloud emulators in PR checks for faster feedback
- difftastic.wilfred.me.uk — syntax-aware diffs that ignore formatting noise and show real line numbers
- emulator.wtf — run Android cloud emulators in PR checks for faster feedback
Difftastic, a structural diff tool that understands syntax
Difftastic, a structural diff tool that understands syntax
difftastic.wilfred.me.uk
September 3, 2026 at 12:23 PM
here are 4 developer tools worth saving from last week👇
- difftastic.wilfred.me.uk — syntax-aware diffs that ignore formatting noise and show real line numbers
- emulator.wtf — run Android cloud emulators in PR checks for faster feedback
- difftastic.wilfred.me.uk — syntax-aware diffs that ignore formatting noise and show real line numbers
- emulator.wtf — run Android cloud emulators in PR checks for faster feedback
here are 4 AI builder tools worth saving 👇
- gputable.dev — compare current cloud GPU rental prices
- iwe.md — keep agent memory in plain Markdown
- getkern.dev — run rootless container sandboxes with virtual resources
- gputable.dev — compare current cloud GPU rental prices
- iwe.md — keep agent memory in plain Markdown
- getkern.dev — run rootless container sandboxes with virtual resources
GPUTable — Live Cloud GPU Prices
Live per-GPU hourly rental prices across 35+ cloud providers, refreshed every 5 minutes. On-demand, spot, and reserved.
gputable.dev
September 2, 2026 at 12:40 AM
here are 4 AI builder tools worth saving 👇
- gputable.dev — compare current cloud GPU rental prices
- iwe.md — keep agent memory in plain Markdown
- getkern.dev — run rootless container sandboxes with virtual resources
- gputable.dev — compare current cloud GPU rental prices
- iwe.md — keep agent memory in plain Markdown
- getkern.dev — run rootless container sandboxes with virtual resources
here are 5 things I bookmarked for building agent-ready software 👇
- openrun.sh - schedule the coding CLIs you already use, then review local diffs before you push
- pageindex.ai - retrieve answers from long documents without embeddings, chunking, or a vector database
- openrun.sh - schedule the coding CLIs you already use, then review local diffs before you push
- pageindex.ai - retrieve answers from long documents without embeddings, chunking, or a vector database
Open Run — Ship features while you sleep
Schedule Claude Code, Codex, Grok and Gemini like cron jobs on your machine, with no API keys.
openrun.sh
August 30, 2026 at 12:09 AM
here are 5 things I bookmarked for building agent-ready software 👇
- openrun.sh - schedule the coding CLIs you already use, then review local diffs before you push
- pageindex.ai - retrieve answers from long documents without embeddings, chunking, or a vector database
- openrun.sh - schedule the coding CLIs you already use, then review local diffs before you push
- pageindex.ai - retrieve answers from long documents without embeddings, chunking, or a vector database
here are 4 tools for people building solo 👇
- agentsky.dev — run persistent coding agents in the cloud through one API, with GitHub, email, file, and chat integrations
- rclown.com — self-host scheduled backups between S3, R2, B2, and other S3-compatible buckets
- agentsky.dev — run persistent coding agents in the cloud through one API, with GitHub, email, file, and chat integrations
- rclown.com — self-host scheduled backups between S3, R2, B2, and other S3-compatible buckets
AgentSky — One API, Every Agent
Popular agents in the cloud, one call away. Claude Code, Codex, Hermes, pi & more — one API key, billed per use.
agentsky.dev
August 27, 2026 at 7:05 AM
here are 4 tools for people building solo 👇
- agentsky.dev — run persistent coding agents in the cloud through one API, with GitHub, email, file, and chat integrations
- rclown.com — self-host scheduled backups between S3, R2, B2, and other S3-compatible buckets
- agentsky.dev — run persistent coding agents in the cloud through one API, with GitHub, email, file, and chat integrations
- rclown.com — self-host scheduled backups between S3, R2, B2, and other S3-compatible buckets
here are 3 solid links for product engineers 👇
- hdls.tools — MCP tools that give agents a mailbox, pastebin, URL shortener, file uploads, and reminders
- reflectdb.dev — TypeScript sync engine for offline-first browser clients, optimistic writes, conflicts, and type inference
- hdls.tools — MCP tools that give agents a mailbox, pastebin, URL shortener, file uploads, and reminders
- reflectdb.dev — TypeScript sync engine for offline-first browser clients, optimistic writes, conflicts, and type inference
headlesstools
MCP-first SaaS tools for AI agents. URL shortener, pastebin, and a real send/receive mailbox.
hdls.tools
August 25, 2026 at 2:58 PM
here are 3 solid links for product engineers 👇
- hdls.tools — MCP tools that give agents a mailbox, pastebin, URL shortener, file uploads, and reminders
- reflectdb.dev — TypeScript sync engine for offline-first browser clients, optimistic writes, conflicts, and type inference
- hdls.tools — MCP tools that give agents a mailbox, pastebin, URL shortener, file uploads, and reminders
- reflectdb.dev — TypeScript sync engine for offline-first browser clients, optimistic writes, conflicts, and type inference
here are 4 tools for teams building with AI agents 👇
- worktrunk.dev — create, switch, inspect, and clean up Git worktrees for parallel agent work
- pgbot.dev — read-only Postgres checks for health, slow queries, indexes, and schema changes
- worktrunk.dev — create, switch, inspect, and clean up Git worktrees for parallel agent work
- pgbot.dev — read-only Postgres checks for health, slow queries, indexes, and schema changes
Worktrunk
CLI for Git worktree management, designed for parallel AI agent workflows.
worktrunk.dev
August 23, 2026 at 7:24 AM
here are 4 tools for teams building with AI agents 👇
- worktrunk.dev — create, switch, inspect, and clean up Git worktrees for parallel agent work
- pgbot.dev — read-only Postgres checks for health, slow queries, indexes, and schema changes
- worktrunk.dev — create, switch, inspect, and clean up Git worktrees for parallel agent work
- pgbot.dev — read-only Postgres checks for health, slow queries, indexes, and schema changes
The idea came from my own kitchen drawer full of expired warranties and receipts I couldn't find when I actually needed them.
So I built the thing I wanted: scan once, search forever, get told before it expires. All on-device.
That's Papertuck
So I built the thing I wanted: scan once, search forever, get told before it expires. All on-device.
That's Papertuck
Launched today 🎉 Papertuck: your paperwork vault. Scan once, find it when life asks, get reminded before things expire. Local-first, no account, no ads
apps.apple.com/nl/app/paper...
apps.apple.com/nl/app/paper...
August 23, 2026 at 6:51 AM
The idea came from my own kitchen drawer full of expired warranties and receipts I couldn't find when I actually needed them.
So I built the thing I wanted: scan once, search forever, get told before it expires. All on-device.
That's Papertuck
So I built the thing I wanted: scan once, search forever, get told before it expires. All on-device.
That's Papertuck
Launched today 🎉 Papertuck: your paperwork vault. Scan once, find it when life asks, get reminded before things expire. Local-first, no account, no ads
apps.apple.com/nl/app/paper...
apps.apple.com/nl/app/paper...
August 21, 2026 at 10:09 PM
Launched today 🎉 Papertuck: your paperwork vault. Scan once, find it when life asks, get reminded before things expire. Local-first, no account, no ads
apps.apple.com/nl/app/paper...
apps.apple.com/nl/app/paper...
here are 6 UI resources worth saving 👇
- great-ui.com — 31 ready-to-use React and Tailwind components
- github.com/nutlope/variate — generate 4 code-based UI variations, then keep the one you want
- tryanim8.com — browser motion editor with editable keyframes and animated SVG export
- great-ui.com — 31 ready-to-use React and Tailwind components
- github.com/nutlope/variate — generate 4 code-based UI variations, then keep the one you want
- tryanim8.com — browser motion editor with editable keyframes and animated SVG export
August 21, 2026 at 9:24 AM
here are 6 UI resources worth saving 👇
- great-ui.com — 31 ready-to-use React and Tailwind components
- github.com/nutlope/variate — generate 4 code-based UI variations, then keep the one you want
- tryanim8.com — browser motion editor with editable keyframes and animated SVG export
- great-ui.com — 31 ready-to-use React and Tailwind components
- github.com/nutlope/variate — generate 4 code-based UI variations, then keep the one you want
- tryanim8.com — browser motion editor with editable keyframes and animated SVG export
A curated supply of beautiful, well-crafted Mac apps: https://macapp.supply/
July 20, 2026 at 8:44 PM
A curated supply of beautiful, well-crafted Mac apps: https://macapp.supply/
The illusion of choice in modern dev:
- Terminal app
- Agent harness
- AI skill
- Menubar app
- Markdown app
What are you shipping this week?
- Terminal app
- Agent harness
- AI skill
- Menubar app
- Markdown app
What are you shipping this week?
July 20, 2026 at 8:32 PM
The illusion of choice in modern dev:
- Terminal app
- Agent harness
- AI skill
- Menubar app
- Markdown app
What are you shipping this week?
- Terminal app
- Agent harness
- AI skill
- Menubar app
- Markdown app
What are you shipping this week?
Making something useful. More soon.
June 30, 2026 at 6:12 AM
Making something useful. More soon.
If I can only choose 1 skill to install, it would be this one from
@cursor_ai
> thermo-nuclear-code-quality-review
The skill does a very good job at reviewing code across a bunch of parameters
@cursor_ai
> thermo-nuclear-code-quality-review
The skill does a very good job at reviewing code across a bunch of parameters
June 25, 2026 at 5:20 AM
If I can only choose 1 skill to install, it would be this one from
@cursor_ai
> thermo-nuclear-code-quality-review
The skill does a very good job at reviewing code across a bunch of parameters
@cursor_ai
> thermo-nuclear-code-quality-review
The skill does a very good job at reviewing code across a bunch of parameters
Reposted by varun
It's been 3 years since | last updated my blog, but last weekend I finally sat down and wrote again.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
June 7, 2026 at 8:44 PM
It's been 3 years since | last updated my blog, but last weekend I finally sat down and wrote again.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
It's been 3 years since | last updated my blog, but last weekend I finally sat down and wrote again.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
June 7, 2026 at 8:44 PM
It's been 3 years since | last updated my blog, but last weekend I finally sat down and wrote again.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
I put together some thoughts on low-context engineering: designing systems, tools, and workflows that are easier for humans and Al agents to understand, modify, and review safely.
Knowledge graph for your agents is a very cool ideas 🔥 https://github.com/colbymchenry/codegraph
May 21, 2026 at 8:30 PM
Knowledge graph for your agents is a very cool ideas 🔥 https://github.com/colbymchenry/codegraph
Reposted by varun
Just open-sourced guard-sdk 🚀
Runtime guards for AI agents with cost caps, token limits, timeouts, and retry controls around your model calls.
npm install @guard-sdk/core
guard-sdk.js.org
Runtime guards for AI agents with cost caps, token limits, timeouts, and retry controls around your model calls.
npm install @guard-sdk/core
guard-sdk.js.org
guard-sdk | Runtime Guards For AI Agents
guard-sdk adds cost limits, timeout budgets, and circuit breakers to AI and agent calls.
guard-sdk.js.org
May 18, 2026 at 8:34 PM
Just open-sourced guard-sdk 🚀
Runtime guards for AI agents with cost caps, token limits, timeouts, and retry controls around your model calls.
npm install @guard-sdk/core
guard-sdk.js.org
Runtime guards for AI agents with cost caps, token limits, timeouts, and retry controls around your model calls.
npm install @guard-sdk/core
guard-sdk.js.org