# Devsly

> Developer tools that just work. Zero config. Zero BS.

Devsly is a free collection of developer tools that run in the browser. Format JSON, encode Base64, generate hashes, decode a JWT, test a regex, convert a cURL command. No signup, no ads.

In its first year it reached 100K+ developers in 10 countries, with 1,039,271 interactions and 850,355 API requests across 78 free tools.

It is MCP-ready too: all 78 tools run straight from an AI assistant, and the architecture is published. A Security Hall of Fame thanks the researchers who keep it safe.

Status: Live · year one complete

Built by: Musa Yıldırım

## What it does

- 78 free tools, from JSON and Base64 to WHOIS and DNS lookup
- No signup, no ads, nothing to configure
- MCP-ready: every tool one command away inside your AI assistant
- Public API with published docs
- Free Chrome extensions: Devsly Network Tools, HookFlow Webhook Tester, Proxy Pilot
- Security Hall of Fame and a 2026 bug-bounty program

## Stack

Browser tools, MCP, REST API, Chrome extensions, English / Turkish

## Media

- Image: Devsly: developer tools that just work. Zero config, zero BS. (https://musayildirim.com.tr/assets/media/devsly/devsly-cover.webp)
- YouTube: [Best Developer Tools: 73 Free Tools and MCP](https://www.youtube.com/watch?v=f7J76S1xe8M)
- Image: Devsly year one: thank you, 100K+ developers, 78 tools, 10 countries. (https://musayildirim.com.tr/assets/media/devsly/devsly-year-one.webp)
- Image: Devsly toolbox: 78 tools, one place, still free. (https://musayildirim.com.tr/assets/media/devsly/devsly-toolbox.webp)
- Image: Devsly MCP: every tool one command away inside your AI assistant. (https://musayildirim.com.tr/assets/media/devsly/devsly-mcp.webp)
- Image: Devsly in numbers: 1,039,271 interactions, 850,355 API requests, 10 countries. (https://musayildirim.com.tr/assets/media/devsly/devsly-what-you-secure.webp)
- YouTube: [Best AI Agent Skills on GitHub: DevSly's Best Skills Page in 3 Minutes](https://www.youtube.com/watch?v=sY3z1J4MT1U)

## Links

- [devsly.io](https://devsly.io)
- [Devsly MCP](https://devsly.io/mcp)
- [API docs](https://devsly.io/api/docs)
- [Security Hall of Fame](https://devsly.io/thanks)
- [HookFlow Webhook Tester](https://chromewebstore.google.com/detail/hookflow-webhook-tester-i/bdmjhglkoanbclcdmndbepoiigpgcnch)
- [Proxy Pilot](https://chromewebstore.google.com/detail/proxy-pilot/iojppobpmcfdfbgifhplacljbgflmnea)