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Everyone is still optimizing prompts The people running 20 agents stopped doing that a year ago Prompt → Context → Harness → Loops Matt Pocock put his whole workflow in one hour and called it "just copy him" 384,000 watched it, almost none copied the third layer a rule...

74,307 views • 16 days ago •via X (Twitter)

13 Comments

Matt Pocock's profile picture
Matt Pocock16 days ago

God this slop-repost meta is boring, can't you add something new to the conversation?

Jordan | 先生's profile picture
Jordan | 先生16 days ago

Well, yeah, fair enough. However the breakdown under it isn't a repost though, my own article with 10 steps, diagrams etc If any of it is wrong I'd rather hear it from you than not.

Matt Pocock's profile picture
Matt Pocock16 days ago

I just don't understand why you're using my face to advertise your article Just post your article If it's good, it'll get attention

gsimone's profile picture
gsimone16 days ago

@mattpocockuk > bookmark it before it's gone what

Jordan | 先生's profile picture
Jordan | 先生16 days ago

@mattpocockuk bookmark this tweet before it's gone in your timeline

Anders Abjorn | sales → AI's profile picture
Anders Abjorn | sales → AI16 days ago

@mattpocockuk It's a difference To prompt like it's Google and works with AI like AI is supposed to be used

Danny Yaroslavski's profile picture
Danny Yaroslavski16 days ago

@mattpocockuk Stop tweeting like an llm

AI Mastery Guide's profile picture
AI Mastery Guide16 days ago

@mattpocockuk Almost nobody copied the layer

AJ ◥'s profile picture
AJ ◥16 days ago

Grok, full technical breakdown: thesis, 5 core arguments with timestamps, 3 counterpoints, lessons, methodologies with paper links, tools/platforms, cited researchers/companies, 2 direct research-team applications, SOTA gap, and implementation details (hyperparams, architecture sizes, or costs) if mentioned. No fluff.

badbutar's profile picture
badbutar16 days ago

@mattpocockuk Prompts are suggestions, harnesses are the bouncers

CryptoAI_Insider's profile picture
CryptoAI_Insider16 days ago

@mattpocockuk Most people build fragile agents because they skip the harness entirely.

hylanderdev's profile picture
hylanderdev16 days ago

@mattpocockuk At least unslop your content before posting lmao

DEV's profile picture
DEV16 days ago

@mattpocockuk Most are stuck at the prompt level. The real value’s in those deeper layers.

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Harness vs. Graphs, clearly explained! a harness is great, and most people think it is the whole thing: retries, timeouts, a sandbox, a log, the context it assembles before every call. all of that is real work, and all of it wraps exactly one call. run it a hundred times and you have one call, made very safely, a hundred times. Graph engineering fixes this by moving the decision up a layer: not how safely one call is made, but which calls exist to be made at all. you need both, and here is the sentence that resolves the whole confusion: the harness is everything around one call. the graph is everything between them. ↳ around one call: retry, timeout, sandbox, log, assemble the context, hand back a result ↳ between calls: split, fan out, merge, gate, send back Prompts → Context → Harness → Loops → Graphs the harness does not go away when you build a graph. it moves under each node, and now there are five of them, each wrapping a call you would never have made by hand. the trick is knowing which layer a failure belongs to. turn a piece off and run it again. if the call still works, it was the harness. if the wrong step runs at all, it was the graph. people spend weeks hardening a harness around a node that should not have existed. one thing to know before you scale it. most of what people call their agent is a harness with a chat box on it. ↳ it retries, it times out, it logs, it assembles context, it holds one call up beautifully ↳ it has never once decided that a second call should exist, and that is the entire difference that last one catches careful people. a harness that never fails is not evidence the system is right. it is evidence one call went well, which is the smallest possible claim. and the one that eats whole nights: a harness cannot save you from the wrong step running. you can retry a bad decision three times with a clean log and perfect isolation, and all you bought was three copies of it. below i have quoted my full guide on graph engineering. it covers the three topologies, the verifier patterns, and where the gate should actually open. save this and read it below ↓

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50,770 views • 9 days ago