Fixzi
Your data workspace. Always correct.
Fixzi launched on May 16, 2026.
What it does
You're debugging at 11 PM. The API returns 200 OK. Your app is broken anyway. A field got renamed upstream. No alert. No log. Just a confused user. Fixzi is the developer data workspace that catches this before your users do. Validate, fix, compare and monitor JSON, XML and API responses — in one place. 🚨 Standout feature: API Contract Monitoring — automatically checks your endpoints and alerts you when response structure changes.
Fixzi monitors MCP server tool schemas, API contracts, and AI model outputs for breaking changes. Get email alerts free. Includes free JSON, XML, diff, and developer tools.
Does a similar job
all alternatives →
Free Monitoring Suite by WebGazer2024 · webgazer.io · ▲338Monitoring for websites, APIs, and cron jobs
Endpoints.dev – Pastebin for HTTP Requests2020 · endpoints.dev · ▲201Endpoints.dev is for sale on Spaceship. Secure checkout and quick transfer. See all purchase options. No hidden fees.
- IRIntercept.rest – Faster API debugging2018 · ▲89
Sharing an internal tool that accelerated my development work 10-fold, especially with API debugging. Thought fellow developers here might find it useful. As a developer, I often have trouble reproducing errors at the client end. https://intercept.rest lets me debug and monitor API requests and responses. It is similar to the Network tab in Chrome Developer Tools but works for any API: mobile apps, webhooks, frontend etc. After I shared it with a close circle of friends, they found it incredibly useful and even found new use cases, I never imagined. Been a long time lurker here and…
FixIt API--Stack Overflow Search in 47ms2025 · ▲7Fix any coding error instantly with 18.5M solutions
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 28d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 26d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 23d ago · openbot.run
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 21d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, May 2026
the whole month →
Parallel agents, diff reviewer, and multi-model comparisons
Dev tools · May 2026 · kilo.ai
Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…
Life & fun · May 2026 · github.com
🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md
Dev tools · May 2026 · github.com