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Pedro Felix

@pedrofelix.org

Learning, developing, and teaching.

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18.11.2023
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Latest posts by Pedro Felix @pedrofelix.org

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Anonymous credentials: an illustrated primer This post has been on my back burner for well over a year. It’s been sitting here unwritten, not because the topic is unimportant — in fact, with every single month that goes by, I become mor…

I wrote a new post on anonymous credentials and how to build them. All of this is in service on a longer future post on how these will fit into age verification systems. blog.cryptographyengineering.com/2026/03/02/a...

02.03.2026 18:39 👍 53 🔁 24 💬 2 📌 2
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Major milestone!
Curity Identity Server 11.0 is out 🚀

→ Ephemeral Clients - OAuth for AI agents without registration
→ Managed Database Schemas for simpler upgrades
→ SCIM Groups and Entity Management
→ Rebuilt UI Kit

Learn more: bit.ly/4cnSOJJ

12.02.2026 10:25 👍 2 🔁 1 💬 0 📌 0
You Are Here - Marc's Blog

The cost of turning written business logic into code has dropped to zero. At best, near-zero.

The cost of integrating services and libraries, the plumbing of the code world, has dropped to zero. At best, near-zero.

What does that mean for the future?

New blog post: brooker.co.za/blog/2026/02...

07.02.2026 18:36 👍 42 🔁 11 💬 1 📌 3
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Logic for Programmers The mathematics that will help you in your everyday programming.

After four months of edits and multiple mental breakdowns, I am delighted to announce the release of *Logic for Programmers* v0.13! All content is in, all that's left is copyediting (and technical editing and layout and proofreading and)

logicforprogrammers.com

03.02.2026 16:55 👍 51 🔁 4 💬 3 📌 0
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Tomorrow: Tune into this live session for a practical look at what's needed to build APIs that AI agents can safely use.

🕚 Jan 21 | 11:00 AM EST
🎟️ Still time to register: https://nordicapis.com/events/api-standards-for-ai-agents/

20.01.2026 09:18 👍 1 🔁 1 💬 0 📌 0
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Open Access Publication & ACM Open Access Publication & ACM

As of today, all ACM publications and related artifacts in the ACM Digital Library are open access. 🎉 @acm.org
www.acm.org/publications...

01.01.2026 17:21 👍 11 🔁 4 💬 0 📌 0
Frying pan with some food in it: cod fish, potatoes, and cabbage.

Frying pan with some food in it: cod fish, potatoes, and cabbage.

Christmas Day tradition: "Roupa Velha" (literally "Old Clothes"). Shredded cod fish, potatoes, and cabbage, from Christmas Eve. With lots of olive oil and garlic, of course.

25.12.2025 20:22 👍 1 🔁 0 💬 0 📌 0
Rice pudding with cinnamon decoration.

Rice pudding with cinnamon decoration.

Final version, ready to release, with the traditional cinnamon based decoration.

24.12.2025 20:10 👍 0 🔁 0 💬 0 📌 0
Two recipients with Rice Pudding.

Two recipients with Rice Pudding.

Cooling down.

24.12.2025 18:11 👍 0 🔁 0 💬 1 📌 0
Pan in a stove with simmering rice pudding.

Pan in a stove with simmering rice pudding.

Christmas Rice Pudding "Arroz Doce" - simmering

24.12.2025 17:32 👍 0 🔁 0 💬 1 📌 0
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git/Documentation/gitdatamodel.adoc at master · git/git Git Source Code Mirror - This is a publish-only repository but pull requests can be turned into patches to the mailing list via GitGitGadget (https://gitgitgadget.github.io/). Please follow Documen...

this fall I worked with the core Git folks on writing an official data model for Git and it just got merged! I learned a few new things from writing it. github.com/git/git/blob...

02.12.2025 17:01 👍 402 🔁 63 💬 8 📌 0
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The wait is over. Rewatch 50+ industry-leading talks on this year's most important API topics. 🎉 Mic drop. 🎤

Watch here: bit.ly/3KoOcaI

#PlatformSummit #PlatformSummit2025

01.12.2025 09:15 👍 2 🔁 2 💬 1 📌 0

I don't know about others but it is wild to me to be willingly giving this up as an engineer.

I'd rather painstakingly hunt-and-peck every character into the IDE than "save time" and lose my credibility attached to my name.

15.11.2025 00:46 👍 93 🔁 7 💬 1 📌 0

A Lamy Safari?

13.11.2025 10:56 👍 2 🔁 0 💬 1 📌 0
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MCP and AI Agents: Identity Strategies for Safe API Access | Webinars AI technologies are advancing fast, bringing both new opportunities and new challenges for digital businesses. There is the potential to…

New webinar alert 📣

On December 4, join our live session to explore how to embrace innovation while protecting your data, your users and your brand reputation.

We'll cover practical design patterns for securing AI agent connections to APIs. Register: bit.ly/4ht83BK

29.10.2025 12:16 👍 1 🔁 2 💬 0 📌 0
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Holding an OxCaml tutorial at ICFP/SPLASH 2025

Then I dive into the tutorial we held about Oxidised OCaml, the performance-oriented fork at oxcaml.org that @yminsky.bsky.social announced earlier this summer. Try the tutorial in a convenient devcontainer, and take our quiz to help develop the language! @thenumb.at anil.recoil.org/notes/icfp25...

23.10.2025 13:12 👍 5 🔁 2 💬 2 📌 0
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APIs are now consumed by ghosts, zombies and robots 👻🧟‍♂️🤖

Catch Jacob Ideskog's keynote (@curity.io) at #PlatformSummit2025 to learn how OAuth secures what lurks in the dark.

📅 Oct 14–15 | Stockholm
👉 https://nordicapis.com/events/platform-summit-2025/

26.09.2025 18:43 👍 3 🔁 2 💬 0 📌 0
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Open Social — overreacted The protocol is the API.

i wrote about atproto and why it matters

26.09.2025 15:33 👍 2823 🔁 508 💬 121 📌 148
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Future of API Security and Identity at Platform Summit 2025: AI, MCP, and Digital Sovereignty | Curity Discover key API security and identity themes at Platform Summit 2025. Explore the rise of non-human identities, MCP and AI-to-API connections, and identity’s role in digital sovereignty with Curity e...

New on the Curity blog: Exploring the Future of API Security and Identity at Platform Summit 2025 (October 13-15)

Have a read: bit.ly/46vVAIp

24.09.2025 13:53 👍 1 🔁 1 💬 0 📌 0
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Anatomy of a Billion-Download NPM Supply-Chain Attack A massive NPM supply chain attack has compromised foundational packages like Chalk, affecting over 1 billion weekly downloads. We dissect the crypto-stealing malware and show you how to protect your p...

Supply chains are so much fun! jdstaerk.substack.com/p/we-just-fo...

09.09.2025 14:53 👍 76 🔁 15 💬 4 📌 1
a child looking down at a golden retriever named Samaria resting in their lap. the child pets the dog's face.

a child looking down at a golden retriever named Samaria resting in their lap. the child pets the dog's face.

a person holding a child on their hip crouches down on the sidewalk to pet a golden retriever on the head.

a person holding a child on their hip crouches down on the sidewalk to pet a golden retriever on the head.

a child wearing all gray sits on a yellow curb. a golden retriever lays on the sidewalk next to them, and rests their head in the child's lap.

a child wearing all gray sits on a yellow curb. a golden retriever lays on the sidewalk next to them, and rests their head in the child's lap.

A group of 6 LCC K9 comfort dogs arrived in Minneapolis yesterday in the wake of the latest mass shooting. The organization deploys comfort dogs following tragic events. The dogs wore their "please pet me vests," offering love and comfort to those processing this heartbreaking tragedy. 15/10 for all

29.08.2025 19:43 👍 3346 🔁 482 💬 46 📌 41
PRO: Frees kids up for extra shifts at the plant
CON: Nagging guilt it was actually AI that earned that C-

PRO: Frees kids up for extra shifts at the plant CON: Nagging guilt it was actually AI that earned that C-

Pros And Cons Of Using AI For Schoolwork https://theonion.com/pros-and-cons-of-using-ai-for-schoolwork/

25.08.2025 18:00 👍 1008 🔁 151 💬 4 📌 2

"Whatever languages make easy become the default and determine a lot of other things. What languages make hard get ignored for many reasons. This is why so many of our curricula today look not that different from the curricula from the mid-1980s onward, ..."

24.08.2025 17:20 👍 0 🔁 0 💬 0 📌 0
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Excessive heat

23.08.2025 18:16 👍 0 🔁 0 💬 0 📌 0
Two large cute tan and white dogs smile hugely in a park under blue skies

Two large cute tan and white dogs smile hugely in a park under blue skies

“What time is it? You’re darned right, it’s sunny Seattle Friday walkies time let’s goooooooooo!” 🧵

23.08.2025 00:01 👍 410 🔁 36 💬 12 📌 9

On the use of setState on render 👇

19.08.2025 13:22 👍 0 🔁 0 💬 0 📌 0
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If you're like me and can't remember if it's RCX or R8 for the fourth parameter... Get the Compiler Explorer ABI Mug: actual calling conventions for x86-64 System V, Windows, and ARM64. Support @godbolt.org: grab yours here -> shop.compiler-explorer.com/collections/...

17.08.2025 22:02 👍 161 🔁 31 💬 9 📌 7

Reminder that before I started writing novels I didn't study writing at university, attended no workshops/conferences, knew absolutely no one in science fiction publishing circles, and didn't start going to conventions until after I got a contract for my novel.

What I *did* do: Write. A lot.

13.08.2025 15:41 👍 1049 🔁 108 💬 43 📌 10

The good news: tomorrow will be 2°C cooler.
The bad news: tomorrow will still be 34°C.

13.08.2025 20:18 👍 0 🔁 0 💬 0 📌 0
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Rising

11.08.2025 17:53 👍 0 🔁 0 💬 0 📌 0