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dangelosaurus

HN member
Joined
Thu, Dec 03, 2015, 9:44 PM UTC
HN karma
142
Public activity
34 items

About dangelosaurus

Member of Technical Staff at OpenAI

Previous:

- CTO & Co-founder at Promptfoo https://promptfoo.dev (Acquired)

- VP Engineering at SmileID https://usesmileid.com

- CTO & Co-founder at Arthena https://arthena.com (YC W17 - Acquired)

- Co-founder at Matroid https://www.matroid.com (2015)

Website: https://mldangelo.com

GitHub: https://github.com/mldangelo

LinkedIn: https://www.linkedin.com/in/michaelldangelo/

Recent public activity

  1. comment
    Comment #49106517

    Please email me and I will help fix this.

  2. comment
    Comment #49092009

    Yes, I think this is an under-appreciated part of the release. I hope people can adapt them to their own workflows. We run A LOT of evals as the Promptfoo team and we've spent bill…

  3. comment
  4. comment
    Comment #49091831

    Thank you, that means a lot. Being able to keep building practical, open-source security tooling was important to us. Really glad we got to ship this, and there's still a lot we wa…

  5. comment
    Comment #49091821

    Not yet, unfortunately. We only just opened the repo, and there isn't a public issue specifically tracking local or OpenAI-compatible endpoint support. The issue tracker is here: h…

  6. comment
    Comment #49091813

    By default, you can sign in with your ChatGPT/Codex account or use an OPENAI_API_KEY. It also does not require cyber registration but it can help if you encounter refusals. If you …

  7. comment
    Comment #49091805

    Agreed! This is near the top of our priority list and we will make it a lot better soon.

  8. comment
    Comment #49091800

    In short, this isn't an offline scanner. The CLI runs locally but the code and context needed for analysis are sent to the hosted model (OpenAI). For API, Business, and Enterprise …

  9. comment
    Comment #49091672

    Sorry about that. We hit an authentication issue at launch and have now merged and deployed a fix in 0.1.1: https://github.com/openai/codex-security/pull/22 One thing worth checkin…

  10. comment
    Comment #49091644

    Thanks! You've run into a real limitation: the CLI doesn't bypass the model's cybersecurity guardrails. If GPT-5.6 Sol finds a vulnerability but refuses to explain it, switching fr…

  11. comment
    Comment #49091620

    Fair question, and I agree the refusals are frustrating. The CLI doesn't do a repository-ownership check. Public projects are supported, and reviewing your own Linux kernel patches…

  12. comment
    Comment #49091397

    Yeah, you're right. A per-minute rate limit shouldn't kill a scan after a minute, and "partial output was kept" makes it sound like you can pick up where you left off. You can't ye…

  13. comment
    Comment #49091391

    Oof, that's a bad outcome. Half your weekly usage and a 50-minute scan just to get a HEAD error at the end is not acceptable. --max-cost can help limit estimated spend, but that do…

  14. comment
    Comment #49090630

    We are actively working on officially supporting this. Because it's open source it is pretty easy to point a coding agent at it now and switch out the model.

  15. comment
    Comment #49090447

    The plugin, including when invoked through the Codex CLI, is great for scanning the repo you're currently working in. The standalone Security CLI/SDK uses the same scanner, but is …

  16. comment
    Comment #49090181

    Hey HN, Michael here, co-founder of Promptfoo and one of the people working on the Codex Security CLI at OpenAI. Thanks for checking this out and for flagging the auth issues. We j…

  17. comment
    Comment #47312492

    Hey HN - Michael here, co-founder of Promptfoo. Happy to answer questions. The one I'd ask if I were reading this: what happens to Promptfoo open source? We're going to keep mainta…

  18. comment
    Comment #46629337

    https://mldangelo.com and https://github.com/mldangelo/personal-site I have been slowly evolving it over 10 years. 1.6k stars, ~ 1,000 forks. I originally designed it to be easy to…

  19. comment
    Comment #46573376

    I work on Promptfoo (an open-source eval framework). Appreciate the mention here. This post captures a lot of the hard lessons around agent evals. In particular, task ambiguity and…

  20. comment
    Comment #46266933

    Working on promptfoo, an open-source (MIT) CLI and framework for eval-ing and red-teaming LLM apps. Think of it like pytest but for prompts - you define test cases, run evals again…

  21. comment
    Comment #46236745

    I ran a red team eval on GPT-5.2 within 30 minutes of release: Baseline safety (direct harmful requests): 96% refusal rate With jailbreaking : 22% refusal rate 4,229 probes across …

  22. comment
    Comment #46085565

    I felt obligated to submit a fix: https://github.com/a16z-infra/reading-list/pull/9 Used Claude to fact-check and fix errors that were likely introduced by Cursor. The circle is co…

  23. comment
    Comment #45989508

    I did similar measurements back in July ( https://www.promptfoo.dev/blog/grok-4-political-bias/ , dataset: https://huggingface.co/datasets/promptfoo/political-question... ). Anthro…

  24. comment
    Comment #44763865

    Promptfoo | Senior/Staff Engineers, Security Researchers, GTM & Founding Operators | REMOTE (North America) / Hybrid San Mateo CA | Full-time | https://promptfoo.dev Promptfoo is t…

  25. story