Niall

they should’ve called it “amateur intelligence”. not in a derogatory way… but it helps amateurs like me venture into other fields. and it mostly produces amateur results. whether that’s ok or not depends on what you’re trying to do

26.06.2025 22:40 — 👍 92    🔁 5    💬 7    📌 1

Excellent post. I'm going to try and find some slow-code advocates in the software engineering space.

02.06.2025 01:02 — 👍 3    🔁 0    💬 0    📌 0

GitHub MCP suffers from the lethal trifecta for prompt injection: access to private data, exposure to malicious instructions + the ability to exfiltrate information

Be really careful with this stuff: attackers can trick your "agent" into stealing your private data simonwillison.net/2025/May/26/...

27.05.2025 00:26 — 👍 136    🔁 48    💬 1    📌 8

#bluesky just fix the damn invalid handle bug. fix it, fix it, fix it.

18.05.2025 22:28 — 👍 0    🔁 1    💬 0    📌 0

It should be memoized as it will re-evaluate props.wrap on every render.

18.05.2025 23:22 — 👍 0    🔁 0    💬 1    📌 0

#bluesky just fix the damn invalid handle bug. fix it, fix it, fix it.

18.05.2025 22:28 — 👍 0    🔁 1    💬 0    📌 0

Nobody will ever read this. But the end of coding is very close - no surprise!! My evidence? 3 months building a SaaS product by myself.

29.04.2025 22:13 — 👍 0    🔁 0    💬 0    📌 0

Here's the main prompt that runs in a loop, which starts like this: You are operating as and within the Codex CLI, a terminal-based agentic coding assistant built by OpenAI. It wraps OpenAI models to enable natural language interaction with a local codebase. You are expected to be precise, safe, and helpful. You can: - Receive user prompts, project context, and files. - Stream responses and emit function calls (e.g., shell commands, code edits). - Apply patches, run commands, and manage user approvals based on policy. - Work inside a sandboxed, git-backed workspace with rollback support. - Log telemetry so sessions can be replayed or inspected later. - More details on your functionality are available at codex --help The Codex CLI is open-sourced. Don't confuse yourself with the old Codex language model built by OpenAI many moons ago (this is understandably top of mind for you!). Within this context, Codex refers to the open-source agentic coding interface. [...]

Wrote some notes on OpenAI codex, their new open CLI "agent" tool for writing and iterating on code. Since it's open source (Apache 2) the workings are available, including an interesting system prompt and a macOS sandbox using the sandbox-exec mechanism simonwillison.net/2025/Apr/16/...

16.04.2025 22:10 — 👍 55    🔁 4    💬 2    📌 0

Awesome!

You're in good company - the new USWDS is being built with Lit too!

13.11.2024 19:57 — 👍 4    🔁 1    💬 1    📌 0

Biden, Trump Die 2 Minutes Apart Holding Hands WASHINGTON—In a heartwarming and touching end to the story of two soulmates, sources confirmed Thursday that President Joe Biden and former President Donald Trump died two minutes apart holding hands....

Biden, Trump Die 2 Minutes Apart Holding Hands

13.11.2024 20:05 — 👍 9744    🔁 1127    💬 134    📌 118

New blog post: Composite Map Keys in JavaScript with Bitsets

A neat technique for generating composite map keys popped up on the Lit Discord, so I wrote about it!

justinfagnani.com/2024/11/09/c...

09.11.2024 20:36 — 👍 31    🔁 5    💬 3    📌 1