Evan Fenster

Founding eng @channel3_ai | Prev @AWS, @penn, @Wharton

[Evan Fenster @EvanFenster]

First product ordered completely by an agent?

[Jeff Weinstein @jeff_weinstein]

Agentic commerce is...actually...starting... You can now buy [coffee beans] via an AI agent using @stripe.

1/ Find [coffee] with AI
2/ Buy in 1-click with Link
3/ Agent gets one-time virtual card
4/ Agent purchases via @browserbase

☕ Watch this video (built by @EvanFenster)

[Evan Fenster @EvanFenster]

This skill “completely kills AI-generated slop”

[Miles Deutscher @milesdeutscher]

This "Taste" Skill is cracked.

I can't believe I didn't discover it sooner - everyone should install this.

It works directly inside Claude Code, Codex, Hermes & more to completely kill AI-generated slop.

If you send this prompt to your agent, it will automatically install it:

[Evan Fenster @EvanFenster]

@lobotomy_user this is great now plz delete 🙏

[Evan Fenster @EvanFenster]

@jamwt Making sure crawlers can read your website so your products get referenced in chatbots might outweigh any of the benefits SPAs provide (for any public facing pages)

[Evan Fenster @EvanFenster]

@siddybuckets0 The infra setup took some time, but because a lot of this logic is built on top of our existing 100M+ product graph, not as long as it should've!

[Evan Fenster @EvanFenster]

Your customers are going to ChatGPT and Gemini for their next shopping decision. Most brands have no idea what AI is saying about them.

When building our universal product catalog, we spent a ton of time figuring out how best to structure messy product data into a schema AI can understand and recommend. We built it for developers. When brands heard about this, they started asking for a way to plug directly into our system, so they could see the work we're doing on their catalogs and distribute it to ChatGPT, Gemini, and the long tail of AI shopping platforms.

[Evan Fenster @EvanFenster]

@staysaasy Signing a non-compete contract w/ OAI wouldn't prevent Anthropic from steamrolling you

If Harvey/Legora had done that and only used OAI models, it wouldn't change the fact Claude for legal is a major threat

[Evan Fenster @EvanFenster]

@PawelHuryn Probably a requirement for many Cowork/Code enterprise contracts?

[Evan Fenster @EvanFenster]

@AshConnell @threejs and im assuming some finite state machine for the characters and path finding? or how do they pick when and which functions to call?

[Evan Fenster @EvanFenster]

WOW. I’m just now finding out Stripe presented my project, Barista Agent, at their keynote conference Stripe Sessions last April.

Would’ve been nice if they’d accredited me during it tho 🤨

[Evan Fenster @EvanFenster]

Cursor subagents often sneaks in prompts to output entire contents of files. 1. Why is this ever necessary, and 2. why spend tokens asking a model to do this, when it can be done in half a second and no token spend with simple I/O?

Feels like a way to burn large amounts of tokens and get users to upgrade their plans quicker ...

[Evan Fenster @EvanFenster]

@milichab @SpaceX @xai @JasonBud Congrats Andrew! So exciting

[Channel3 @channel3_ai]

It's never been easier to build an agentic commerce app. Use our skill to instantly get setup with product discovery and built in monetization.

`npx skills add channel3-ai/skills`

[Evan Fenster @EvanFenster]

@nlevine19 I agree with a lot of this. I think of x402 as a shared, global pay-as-you-go API key that an agent can use (rather than make a new API key with each service). And this can make sense for new services, but cards work a lot better with existing businesses.

[Evan Fenster @EvanFenster]

I've built agents that autonomously make purchases. The bottleneck is NOT in programmatic spending - existing card infra actually handles this very well.

There's nearly no difference between giving your employees a corporate card with complex spend limits, and doing the same thing with an agent.

Tokenizing and issuing one-time use cards is a solved problem. Amazon has been using payment tokens for years (notice how your card is saved on file, without needing to retype cvc for orders?).

The current bottleneck is being able to actually USE these cards with merchants. The current options are (1) browser use PAN form filling and (2) direct integrations (ACP, UCP, x402, etc).

You may be able to get a few large merchants with direct integrations (ACP w/ Walmart, Etsy, Instacart) but the long tail will lag, probably forever.

x402 makes sense as a global, pay-as-you-go API key, but I agree it won't fill this hole with existing merchants.

Browser use models will progress enough for the one-time use card filling approach, but there's a whole host of existing bot prevention infra that would need to be reworked for accept agents making payments as well.

Lots of interesting work to be done within this gap!

[Noah Levine @nlevine19]

https://t.co/kd6SBchFWY

[Zaid @zaidmukaddam]

So many cool things to do with MCP Apps!
Check out Penny in Scira!

[Evan Fenster @EvanFenster]

Penny combines the Channel3 API with MCP App SDK for a new, conversational shopping experience, complete with price tracking and affiliate monetization

[Channel3 @channel3_ai]

Penny is a new MCP App that leverages the Channel3 API for product discovery, price tracking, variant data and more.

It's live in @sciraai today and rolling out to other platforms soon.

[Evan Fenster @EvanFenster]

@liadyosef @AnthropicAI @OpenAI @idosal1 @claudeai @code @goose_oss @ChatGPTapp So awesome

[Evan Fenster @EvanFenster]

Didn’t realize autonomous snow blowers existed, gonna be awesome to see ai robotics progress over next 10 years

[Tom Moloughney @tommolog]

Winter Storm Fern has descended upon NJ this morning and my @yarboglobal autonomous snow blower went into action.
This is going to be a great test to see if this robot can handle a 6,000 sq.ft. driveway during a major winter storm.
I'm inside sipping a coffee while it's doing its job and so far so good!

[Evan Fenster @EvanFenster]

@chrisbarber channel3 for searching structured product data :)