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An agent in 100 lines of Lisp

https://thebeach.dev/posts/lisp-agent/
67•jamiebeach•4d ago

Comments

hankbond•1h ago
Maybe this is a reductive comment, but how does this differ from just letting your agent bash tool a `python -c` command (or anything of that class)? I'm not really getting where this is a "wow" moment?

It is always nice to appreciate how much power you get out of (Model + the absolute bare minimum of control flow). There is just so much baked into the models now that given an inch they will take a mile.

pama•32m ago
The blog is about writing an agent when you dont already have an agent, but only a plain LLM. It stitches the minimal pieces together. Agents dont need lots of supporting infra, so it is good to keep the code concise. Not a wow moment for sure, though some people think that agents and harnesses are complicated.
lelandbatey•31m ago
By my eye it's not that different, it's riffing in it from a Lisp perspective.

It's pretty amazing to write your own agent BTW. I've got a zero-dependency all-in-one-file agent harness I wrote myself. I use it all the time now because I can get it from anywhere and I can know EXACTLY what it'll do (as much as you can with any model), what it's been told vs not. Using it as a harness for models I'm hosting myself makes me feel like some kind of LLM homesteader: it's a set of tools I'll always have that will only change as much as I want it to change.

wild_egg•28m ago
You're not wrong. I did a similar agent in lisp back with Sonnet 3.5 and had a wow moment, but the wow was mostly for seeing an agent working effectively at all at that point in time.

The part that killed it for me was losing everything if the lisp crashed (sonnet 3.5 was prone to doing that) and solving persistence had too many edge cases and confused the model.

Later realized that writing the agent as 20 lines of bash was equivalently powerful to the lisp agent, but made persistence trivial from the easy file system interop.

emp17344•11m ago
Littered with AI writing tells.

We Know Simple Fluids Can Flow. Turns Out, Some Can Fracture

https://www.quantamagazine.org/we-know-simple-fluids-can-flow-turns-out-some-can-fracture-20260710/
47•Anon84•2h ago•8 comments

Mesh LLM: distributed AI computing on iroh

https://www.iroh.computer/blog/mesh-llm
165•tionis•6h ago•37 comments

A pure scheme web programming tool

https://goeteia.dev
52•guenchi•3h ago•16 comments

Show HN: Ant – A JavaScript runtime and ecosystem

https://antjs.org
214•theMackabu•8h ago•91 comments

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https://github.com/Wren6991/RISCBoy
90•mariuz•6h ago•17 comments

I Did Not Kill Stanley Lieber: How to Draw (With 9front)

https://triapul.cz/automa/i_did_not_kill_stanley_lieber
34•c-c-c-c-c•2d ago•5 comments

The Energetic Costs of Cellular Computation (2012)

https://arxiv.org/abs/1203.5426
14•lioeters•2h ago•1 comments

A dock that wakes up reliably

https://fabiensanglard.net/tb4/index.html
51•ingve•4h ago•37 comments

An agent in 100 lines of Lisp

https://thebeach.dev/posts/lisp-agent/
67•jamiebeach•4d ago•5 comments

Nvidia, CoreWeave, and Nebius: Inside the Circular Financing of the GPU Boom

https://io-fund.com/ai-stocks/nvidia-coreweave-nebius-circular-financing-gpu-boom
200•adletbalzhanov•11h ago•67 comments

Why are US consumers so angry? It's not just high prices

https://www.theguardian.com/us-news/ng-interactive/2026/jun/04/us-consumer-rage-prices-economy
43•dilawar•1h ago•31 comments

Under federal rule, colleges must leave grads better off or lose financial aid

https://www.npr.org/2026/06/30/nx-s1-5835631/turner-camhi-do-no-harm-college-loans
20•nradov•49m ago•6 comments

A Erlang style pure Scheme Webserver and further

https://igropyr.com
31•guenchi•3h ago•1 comments

EF Core 11 makes your split queries faster

https://steven-giesel.com/blogPost/d4401fd0-805a-4703-9d9e-5fe3b57c25ea
5•rellem•1w ago•0 comments

What xAI's Grok Build CLI Actually Sends to xAI

https://gist.github.com/cereblab/dc9a40bc26120f4540e4e09b75ffb547
139•jhoho•3h ago•77 comments

Long Covid May Physically Damage the Nerves That Control the Stomach

https://www.ijidonline.com/article/S1201-9712(26)00608-9/fulltext
82•thenerdhead•4h ago•36 comments

Billions of Sketches Reveal Hidden Cultural Variation in Human Concepts

https://arxiv.org/abs/2607.07267
73•Anon84•2d ago•9 comments

UPI: Anatomy of a Payment Transaction

https://timeseriesofindia.com/economy/reads/upi-architecture/
133•prtk25•12h ago•50 comments

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https://clickhouse.com/blog/pgbouncer-clickhouse-managed-postgres
189•saisrirampur•13h ago•38 comments

Jellyfish Undersea Roundabout

https://visitfaroeislands.com/en/plan-your-stay/getting-around/world-first-under-sea-roundabout
16•hydrogen7800•3d ago•1 comments

The early History of the Singular Value Decomposition (1993) [pdf]

https://www.math.ucdavis.edu/~saito/courses/229A/stewart-svd.pdf
102•wolfi1•13h ago•61 comments

Prefer strict tables in SQLite

https://evanhahn.com/prefer-strict-tables-in-sqlite/
242•ingve•11h ago•119 comments

Fixed three bugs that made Qwen3.5-122B a daily driver on Mac Studio

https://mrzk.io/posts/qmlx-maximising-ai-psychosis-minmaxing-mac-studio/
19•marzukia•5h ago•7 comments

Biff.graph: structure your Clojure codebase as a queryable graph

https://github.com/jacobobryant/biff/tree/v2.x/libs/graph
104•jacobobryant•4d ago•9 comments

Doctors die. It's not like the rest of us, but it should be (2016)

https://archive.cancerworld.net/featured/how-doctors-die/
111•downbad_•5h ago•65 comments

Optimization Solver as a Service

https://www.quicopt.com/developer/getting-started/
24•paddi91•3d ago•12 comments

Show HN: Learn by rebuilding Redis, Git, a database from scratch

https://shipthatcode.com
138•acley•15h ago•40 comments

Martha Lillard, last US polio patient using iron lung, dies at 78 in Oklahoma

https://abcnews.com/US/wireStory/martha-lillard-us-polio-patient-iron-lung-dies-134668491
52•daniel_iversen•4h ago•9 comments

Sixtyfour (YC P25) Is Hiring

https://www.ycombinator.com/companies/sixtyfour/jobs/bIbgQkL-operations-associate-data-samples-cu...
1•HPMOR•11h ago

Show HN: Sqlsure – deterministic semantic checks for AI-generated SQL

https://github.com/sqlsure/sqlsure
25•tejusarora•8h ago•4 comments