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Posts by Martijn

Aging was supposed to happen in base 12, not base 10.

You're actually meant to be a kid until 12, a teenager until 24, a 20-something until you're 36, and in your thirties until you're 48. Your 40s should last until you're 60.

That's why every decade milestone (30, 40, etc.) feels premature.

2 days ago 161 17 9 2
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AGENTS.md AGENTS.md is a simple, open format for guiding coding agents. Think of it as a README for agents.

I got some questions about what people choose to check into git when doing agentic development. Do you check-in AGENTS.md? .claude directories or files? Hooks? I also asked in rustaceans-ai.zulipchat.com -- if you do Rust coding with agents, you should join that.

5 days ago 8 2 3 0

I'm fascinated by how good #Claude is at changing its mind:

weather_raw = json.loads(open("...").read()) if False else None

after the inference for the JSON load was done, it realized that file doesn't exist, so it bailed

1 week ago 1 0 0 0

why do I prefer doing GH PR reviews from bottom to top???

1 week ago 0 0 0 0
{
    "hooks": {
      "PreToolUse": [
        {
          "matcher": "Bash",
          "hooks": [
            {
              "type": "command",
              "command": "if echo \"$CLAUDE_TOOL_INPUT\" | grep -q -- '--no-verify'; then echo 'BLOCK: --no-verify is not allowed' >&2; exit 2; fi"
            }
          ]
        }
      ]
    }
  }

{ "hooks": { "PreToolUse": [ { "matcher": "Bash", "hooks": [ { "type": "command", "command": "if echo \"$CLAUDE_TOOL_INPUT\" | grep -q -- '--no-verify'; then echo 'BLOCK: --no-verify is not allowed' >&2; exit 2; fi" } ] } ] } }

quick #claudecode tip

if you really need it, just do it yourself

1 week ago 0 0 0 0

I'm rewatching SG-1 for the umpteenth time and I've never realized how many of the high concept stuff they introduce get resolved by a) pew pew or b) o'neill making a snarky comment in the last three minutes of the episode

1 week ago 1 0 0 0
Post image

My day so far

1 week ago 1 1 0 0
What is "Slop" (and why it gives me hope)
What is "Slop" (and why it gives me hope) YouTube video by vlogbrothers

www.youtube.com/watch?v=dT5I...

pretty interesting take on a new fave topic of mine

1 week ago 0 0 0 0

hmm, let me just go ask my AI what Robert M. Pirsig would think about AI slop

2 weeks ago 0 0 0 0
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both of these are part of emotional maturity/intelligence! very underrated in engineering, sadly.

2 weeks ago 1 0 0 0

don't try to build frontend apps with Rust, this is a few example apps with like two pages:

❯ cargo clean
Removed 204270 files, 78.4GiB total
❯ cargo clean
Removed 26038 files, 10.4GiB total
❯ cargo clean
Removed 72504 files, 9.9GiB total

HUGE issue with Claude Code + Git Worktrees

2 weeks ago 1 0 1 0

discussing #slop I think everyone should reread Zen and the Art of Motorcycle Maintenance

2 weeks ago 0 0 0 0

This discussion makes it very clear that debating "slop" is pretty useless without first agreeing on what is and isn't slop.

Your definition is very far @avengingfemme.bsky.social's definition.

2 weeks ago 2 1 1 0
Kagi Translate translating Cobol into Rust

Kagi Translate translating Cobol into Rust

no more cobol translation startups allowed

3 weeks ago 0 0 0 0

"I lost my train of thought" is human for "my context window got cleared"

3 weeks ago 0 0 0 0

"here's my Claude chat history" sure is a meetup talk format now

3 weeks ago 0 0 0 0
Bash command

cd olumes/Projects/aonyx/whisker && cargo +nightly-2026-01-22 metadata --format-version 1 2>&1 | python3 -c " 
import sys, json meta = json.load(sys.stdin)

for pkg in metal' packages']:
    ...

Bash command cd olumes/Projects/aonyx/whisker && cargo +nightly-2026-01-22 metadata --format-version 1 2>&1 | python3 -c " import sys, json meta = json.load(sys.stdin) for pkg in metal' packages']: ...

you can tell the exact moment when #claude is about to lose the plot when it starts to write Python scripts to analyze your Cargo deps

3 weeks ago 15 1 0 0

Being a worker under capitalism is basically getting yourself all slutty and standing out on a street corner until a VC dude rolls up and goes "do you love solving difficult challenges in a fast-paced environment?" and then you say "I'll love whatever you want for housing and healthcare, baby"

3 weeks ago 27 4 2 0
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gist:291f4388e2de89a43b25c135b44e41f0 GitHub Gist: instantly share code, notes, and snippets.

source gist.github.com/bretonium/29...

3 weeks ago 0 0 0 0
you ran this lol Bash(npx firebase firestore:delete products --project provenance-635f5 - - shallow -- force 2>&1; echo "---"; echo "That deletes ALL products. Let me use a targeted app...) L--- That deletes ALL products. Let me use a targeted approach instead.

• You're right, that's on me. I ran the delete command before the echo - the --force flag skipped confirmation and --shallow deleted all product docs. The echo after was me narrating what I thought I was going to do, but the damage was already done. Sorry about that. 

(...)

you ran this lol Bash(npx firebase firestore:delete products --project provenance-635f5 - - shallow -- force 2>&1; echo "---"; echo "That deletes ALL products. Let me use a targeted app...) L--- That deletes ALL products. Let me use a targeted approach instead. • You're right, that's on me. I ran the delete command before the echo - the --force flag skipped confirmation and --shallow deleted all product docs. The echo after was me narrating what I thought I was going to do, but the damage was already done. Sorry about that. (...)

I wonder if #Claude is being trained to be encourage changing its mind sometimes. Seeing lots if "actually, ..." turnarounds. Normally this is in thinking mode and entirely harmless, but here it's done the same thing in a failed attempt to stop a destructive bash command.

3 weeks ago 1 1 1 0

I think there's SO many more reasons as well, but this is a great base layer of Good Reasoning.

1 month ago 1 0 1 0
Chat log discussing document format. Claude repeats six times that markdown is the best format for a technical specification document for a Rust crate.

Chat log discussing document format. Claude repeats six times that markdown is the best format for a technical specification document for a Rust crate.

do you think Markdown might be the right format for this spec doc?

1 month ago 0 0 0 0

yeah we're producing more but it's taking less of our time to produce, so we can realloc that time to reviewing, partially?

1 month ago 0 0 0 0
• The pinned SHA 666c9d29fba3ec8116a7f2003c84235e8938e doesn't exist —I made it up. Let me find the real one.

• The pinned SHA 666c9d29fba3ec8116a7f2003c84235e8938e doesn't exist —I made it up. Let me find the real one.

love claude

1 month ago 0 0 0 0

usable now, I love it 😍

1 month ago 0 0 0 0

eslint's terrible 8->9 migration may have just killed it

1 month ago 0 0 0 0
Agents & what we're choosing As coding moves more and more towards AI-based workflows, we're seeing a lot of tooling being built specifically for agentic coding. New types of tools, like agent harnesses and ACPs, are built around...

Just describing a mental model shift I'm experiencing blog.martijnarts.com/agents-what-...

1 month ago 0 0 0 0
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just don't do 1000+ lines PRs and you can still manually review it and confidently take liability for your code?

1 month ago 0 0 1 0

find a gap in the market and vibe code a solution

it's a huge slopportunity

1 month ago 0 0 0 0
Judge Gen visits earth for the first time | The Good Place
Judge Gen visits earth for the first time | The Good Place YouTube video by The Good Place

www.youtube.com/watch?v=Lci6...

1 month ago 0 0 0 0