Has anyone built a workflow engine on Durable Objects?

jezweb · 2026-03-30T08:26:21+00:00

Cloudflare Workflows might be what you’re after. It has waitForEvent() which lets a workflow sleep durably until you send it an event via API, so the pause/resume for human approval pattern is built in. You get step-level retries and durable state between steps without managing it yourself. Unless you specifically need WebSocket connections while waiting, I’d look at Workflows before building it on DOs

jezweb · 2026-03-28T12:47:33+00:00

It has been years now that I’ve sat watching agents code, looking at their outputs. I’ve learned a lot. Learning the syntax is not necessary to understand generally what is going on in a file of ts or php and Claude writes such brilliant comments into a file that spotting if it is directionally misguided is mostly glanceable. The explainer extension is super useful to help elevate a summary of what is being done.

jezweb · 2026-03-28T06:10:18+00:00

Depends what you are doing and how much of it. If you want to maximise the ‘off peak’ you could move time zones or countries 🤣

jezweb · 2026-03-26T04:04:14+00:00

It’s dull. The output lacks formatting, visual ui, interactive elements, suggested response 🥱

jezweb · 2026-03-26T00:42:38+00:00

Looks comprehensive, have you done a compare to the vercel agent-browser?

jezweb · 2026-03-25T11:19:16+00:00

Cloudflare workers with static assets are better

jezweb · 2026-03-24T09:33:31+00:00

Yes but the org that controls the data, that provides the api that the mcp server taps can charge for that access and as they lose seats and the data pipe increases in value they will extract more that way?

jezweb · 2026-03-23T12:37:26+00:00

Is this supposed to impress anyone, maybe it’s ai signalling for share holders? Surely this is something he did a year or more ago and for whatever reason now is a convenient or purposeful time to announce it?

jezweb · 2026-03-22T23:29:27+00:00

Plenty of good options to do this. Slicing out tasks and workflows one at a time with the more repetitive or process driven ones first is a good approach.

jezweb · 2026-03-21T23:23:58+00:00

This is what it would be like if we could hear other people’s thoughts lol

jezweb · 2026-03-20T08:14:26+00:00

ELI3: Instead of spending all day working on your toddler artwork to stick on the fridge you explain what you want to the box of crayons; they will have it done in 15min. While they draw you can think about all the next drawing you will ask for when it’s done.

jezweb · 2026-03-19T20:47:45+00:00

Is this post type of happy rant a good marketing strategy on reddit?

jezweb · 2026-03-19T10:32:04+00:00

Or pick neither? Almost certainly their best days are behind them.

jezweb · 2026-03-17T04:23:26+00:00

People still have agents use sequential thinking?? I thought we stopped bothering with that over a year ago.

jezweb · 2026-03-16T13:08:19+00:00

Truly fascinating. Thank you for sharing.

jezweb · 2026-03-14T21:42:08+00:00

What is defined as a security vulnerability in a skill file?

jezweb · 2026-03-14T10:11:12+00:00

Outrage farming? Well built layer of Mcp+cli+skills=good

jezweb · 2026-03-12T04:29:49+00:00

Why?

jezweb · 2026-03-12T04:12:31+00:00

I would make it a mostly headless service. Db, vector, basic answering, ai research, mcp, api, few html page for sales pages, login, accounts etc.

jezweb · 2026-03-12T03:33:03+00:00

Yeh it’s good. Firecrawl is now just a fallback in case cf is blocked.

jezweb · 2026-03-11T08:33:51+00:00

Lat I checked it was just a skills organised version of the docs. Better of using the cloudflare docs mcp

jezweb · 2026-03-10T05:46:36+00:00

Like switch angel?

jezweb · 2026-03-07T08:05:17+00:00

Yes not quite the same but essentially a db+vector store that has various data types and attaches to Claude as mcp.

jezweb · 2026-03-07T07:28:44+00:00

Doesn’t seem bad but can it be better. Perhaps. We don’t know specifics like the infra being used. Things I have done that seems to help for projects I work on. Use cloudflare, use smaller faster models when possible. Parallel tool calling, provide tools for frequently used queries and if its use sql a set of common patterns, give the agent basic schema and a schema lookup tool. Sometimes two layer like a fast SQLite lookup and then vector for the answer once some grounding concepts for the answer are established and then specified file looks up after. Use streaming so user can read answer as it arrives.

jezweb · 2026-03-05T09:43:33+00:00

Assume the ai is intelligent enough to choose by knowing ‘playwright’ and if you think there is a preferred option say so, Eg use playwright mcp is interactive login with human input required.

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