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Launch HN: Kampala (YC W26) – Reverse-Engineer Apps into APIs
Hey! I am Alex and together with my co-founder Tarun built Kampala (https://www.zatanna.ai/kampala https://www.zatanna.ai/kampala). It’s a man-in-the-middle (MITM) style proxy that allows you to agentically reverse engineer existing workflows without brittle browser automation or computer use agents. It works for websites, mobile apps, desktop apps.
Demo: https://www.youtube.com/watch?v=z_PeostC-b4 https://www.youtube.com/watch?v=z_PeostC-b4.
Many people spend hours per day in legacy dashboards and on-prem solutions reconciling data across platforms. Current attempts at automation use browser automations or computer use agents which are brittle, slow, and nondeterministic.
I come from a web reverse engineering background and spent the last 7-8 years building integrations by hand for sneaker/ticket releases, sportsbooks logins, and everything in\ between. During that time I consulted for several companies and brought them off of browser based infrastructure into the requests layer.
When we started Zatanna (that’s our company name) we worked in dental tech, which meant we had to deal with tons of insurance payer dashboards and legacy dental-practice solutions. Our superpower (as a fairly undifferentiated voice agent/front desk assistant company) was that we could integrate with nearly any system requested. During this time we built extensive tooling (including what we’re now calling Kampala) to allow us to spin up these integrations quickly.
Existing MITM proxies and tooling didn’t work for a few reasons: (1) They manipulated the TLS and HTTP2 fingerprint over the wire which was detected by strict anti-bots. (2) They had bad MCPs which did not adequately expose necessary features like scripts/replay. (3) They did not allow for building workflows or actions given a sample or sequence of requests.
As the tools we built got more powerful, we began to use them internally to scrape conference attendees, connect to external PMS systems, and interact with slack apps. I even sent it to my property manager mom, who (with a lot of help from me lol), automated 2-3 hours of billing information entry in Yardi. At that point we realized that this wasn’t really about dentistry :)
Because Kampala is a MITM, it is able to leverage existing session tokens/anti-bot cookies and automate things deterministically in seconds. You can either use our agent harness that directly creates scripts/apis by prompting you with what actions to make, or our MCP by manually doing a workflow once, and asking your preferred coding agent to use Kampala to make a script/API to replicate it. Once you have an API/script, you can export, run, or even have us host it for you.
We think the future of automation does not consist of sending screenshots of webpages to LLMs, but instead using the layer below that computers actually understand. Excited to hear your thoughts/questions/feedback!
- Sytten 6mo agoInteresting product (Caido co-founder here). It is very hard to nail auth, probably the most underlooked aspect by end users. We are working on something similar for PoC reproduction of vulnerabilities. Fingerprinting is also a hard thing to match perfectly, I would be curious to know what your strategy is on that. My experience has been that unless you bundle multiple TLS lib it is almost impossible to do at 100% because none of the lib cover all the TLS extensions.
- alexblackwell_ 6mo agoWe’re currently running a variety of stuff for TLS/HTTP2. If you download you can see the full trace of the connection. We dump the TLS connection byte for byte with the different structured subsections. With tls.peet.ws and bogdann finn’s tls-client (which we use parts of with some modifications) I would say that http3/tcp fingerprinting is probably the remaining issue. We currently don’t support http3 connections (they’re niche + apple system proxy doesn’t support them well), and TCP fingerprinting is a bit too low level to build out tooling in GO currently. Possibly for a later release. Curious if you’ve tried bogdann finn/the existing tooling?
- Sytten 6mo agoWe are in Rust so our options are more limited. Make sense the golang ecosystem is pretty good for that.
- mkirsten 6mo agoCool! Links on the page doesn't work, at least not for me, e.g., https://www.zatanna.ai/kampala#how-it-works https://www.zatanna.ai/kampala#how-it-works Also not clear on the page if it is apps from the local machine or on the network. Maybe some clearer examples and use cases would help?
- alexblackwell_ 6mo agoOops now realizing that pattern where we send you to bottom latest download link is definitely confusing. Fixed so that the top button sends you straight to Download now.