Marc-Antoine Ferland 💈

Software Engineer @ Carta

[Marc-Antoine Ferland 💈 @ma_ferland]

I got tired of typing visual feedback to my coding agent ("move the button left, no, the one with too much padding").

So I built Pinpoint: drop comments on a screenshot like Figma, your agent reads them back as structured feedback.

Demo, no install: https://t.co/J9nGMXpOY5

[Marc-Antoine Ferland 💈 @ma_ferland]

@juanbuis So https://t.co/JwbtYxmC0O with a format. I guess it works for simple recipes, but I'd keep the instructions; sometimes there's key information there!

[Marc-Antoine Ferland 💈 @ma_ferland]

@finbarr I like @Bitwarden

[Marc-Antoine Ferland 💈 @ma_ferland]

Same idea as @backnotprop's Plannotator, just screenshots and comments instead of a plan. That project is the reason this one exists.

Open source, built with Bun and React. Would love your feedback.
Repo: https://t.co/0uYpknUfgP
HN: https://t.co/fL9dapePGU

[Marc-Antoine Ferland 💈 @ma_ferland]

A review exports to a .pinpoint.zip you can hand to a designer or PM. Or share a link: it's end-to-end encrypted, the relay only sees ciphertext. They add pins on their own machine and send it back. No shared account, no shared project.

[Marc-Antoine Ferland 💈 @ma_ferland]

The part I use most is side-by-side before/after. The agent makes a change, you compare the two screens, and you give sharper feedback because you can actually see the difference.

[Marc-Antoine Ferland 💈 @ma_ferland]

I got tired of typing visual feedback to my coding agent ("move the button left, no, the one with too much padding").

So I built Pinpoint: drop comments on a screenshot like Figma, your agent reads them back as structured feedback.

Demo, no install: https://t.co/J9nGMXpOY5

[Marc-Antoine Ferland 💈 @ma_ferland]

It's a slash command in Claude Code (/pinpoint:review) or a CLI any agent can shell out to.

Screenshot, browser opens, you pin a region and comment, the agent gets JSON back and fixes each one. Coordinates are percentages, so they survive any resolution.

[Marc-Antoine Ferland 💈 @ma_ferland]

@alexdotjs Hot damnnnn! That's awesome 🔥

[Marc-Antoine Ferland 💈 @ma_ferland]

@supabase Congrats

[Marc-Antoine Ferland 💈 @ma_ferland]

@supabase And his pulse in the top-right corner 🤣

[Marc-Antoine Ferland 💈 @ma_ferland]

@Shpigford 👀

[Marc-Antoine Ferland 💈 @ma_ferland]

@MbaziiraRonn https://t.co/HvjO8YhqPO

[Marc-Antoine Ferland 💈 @ma_ferland]

@devdevcharlie wow

[Marc-Antoine Ferland 💈 @ma_ferland]

@mpocock1 ✋

[Marc-Antoine Ferland 💈 @ma_ferland]

@fergalreid @ellegist What? 👀

[Marc-Antoine Ferland 💈 @ma_ferland]

@mpocock1 Very helpful

Infer and the whole GetContainerValue is something that is really hard to understand IMHO.

[Marc-Antoine Ferland 💈 @ma_ferland]

@ultrox @mpocock1 Thanks @ultrox

[Marc-Antoine Ferland 💈 @ma_ferland]

@mpocock1 Thank you!

[Marc-Antoine Ferland 💈 @ma_ferland]

@iambenwis @anthonypjshaw I came here to say this 👍