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Show HN: Open-source certificate from GitHub activity

43 points by brendonmatos 9mo ago

I built this as a small side project to learn and experiment, and I ended up with this! I used a subdomain from my personal portfolio, and everything else runs on free tiers. The project uses Nuxt, SVG, Cloudflare Workers, D1 (SQL), KV, Terraform, and some agentic coding with OpenAI Codex and Claude Code. What started as a joke among friends turned into a fun excuse to build something end to end, from zero to production, and to explore a few things I’d never touched before. I’d really appreciate any feedback or suggestions.

lolalele 9mo ago
Very cool! Any plans to add more badges specific to big open-source projects like React, Linux, or Git?
- brendonmatos 9mo ago
  Great idea. totally doable for sure
  - deleted 8mo ago
    [deleted]
holg 9mo ago
Nice idea, how about even more badges? Might be some challenge for the clean looking Certificate...
- deleted 9mo ago
  [deleted]
- brendonmatos 9mo ago
  yea, it really is a challenge! currently, I have a sorting working to fetch the most relevant badges. I only show the top 3 to keep the certificate clean
raphaeljlps 9mo ago
Nice, how much is costing to run?
- brendonmatos 8mo ago
  Nothing! everything is running under a cloudflare free tier
gus_massa 9mo ago
Feature request: GitLab support.
- esafak 8mo ago
  + Codeberg
LandenLove 8mo ago
Fun idea! Seems like a pretty complex tech stack. My only recommendation is to add better input filtering on the front end. For example, I initially copy and pasted the whole URL and it gave a 400 error. e.g. https://github.com/QCgeneral29/ https://github.com/QCgeneral29/ Then I realized it was only the username, so I deleted the url part, but forgot to remove the / at the end e.g. QCgeneral29/ Another 400 error. Finally, I entered QCgeneral29 and it worked.
- brendonmatos 8mo ago
  Good idea!! I'll implement a better input handling for it I'll accept the entire github url, and i'll also trim the input Thank you for the heads-up!
varun_ch 8mo ago
It’s pretty easy to forge git commit dates and push them to a private repo. Does this account for that?
- brendonmatos 8mo ago
  For some badges, it is indeed easy to cheat. However, for badges like merging a PR into a repository with 10k or 100k stars, it's much harder to spoof Edit: same for badges related to creating a repo that reaches x amount of stars and helpful comments on issues
chuongpqvn117 8mo ago
Very nice idea. I like it ! Have one issues with print is that can't show the color board
- brendonmatos 8mo ago
  Which browser are you using?

43 points by brendonmatos 9mo ago

lolalele 9mo ago

Very cool! Any plans to add more badges specific to big open-source projects like React, Linux, or Git?

brendonmatos 9mo ago
Great idea. totally doable for sure
- deleted 8mo ago
  [deleted]

holg 9mo ago

Nice idea, how about even more badges? Might be some challenge for the clean looking Certificate...

deleted 9mo ago
[deleted]
brendonmatos 9mo ago
yea, it really is a challenge! currently, I have a sorting working to fetch the most relevant badges. I only show the top 3 to keep the certificate clean

raphaeljlps 9mo ago

Nice, how much is costing to run?

brendonmatos 8mo ago
Nothing! everything is running under a cloudflare free tier

gus_massa 9mo ago

Feature request: GitLab support.

esafak 8mo ago
+ Codeberg

LandenLove 8mo ago

Fun idea! Seems like a pretty complex tech stack. My only recommendation is to add better input filtering on the front end. For example, I initially copy and pasted the whole URL and it gave a 400 error. e.g. https://github.com/QCgeneral29/ https://github.com/QCgeneral29/ Then I realized it was only the username, so I deleted the url part, but forgot to remove the / at the end e.g. QCgeneral29/ Another 400 error. Finally, I entered QCgeneral29 and it worked.

brendonmatos 8mo ago
Good idea!! I'll implement a better input handling for it I'll accept the entire github url, and i'll also trim the input Thank you for the heads-up!

varun_ch 8mo ago

It’s pretty easy to forge git commit dates and push them to a private repo. Does this account for that?

brendonmatos 8mo ago
For some badges, it is indeed easy to cheat. However, for badges like merging a PR into a repository with 10k or 100k stars, it's much harder to spoof Edit: same for badges related to creating a repo that reaches x amount of stars and helpful comments on issues

chuongpqvn117 8mo ago

Very nice idea. I like it ! Have one issues with print is that can't show the color board

brendonmatos 8mo ago
Which browser are you using?