Marcelo Jimenez

Building

[Marcelo Jimenez @chelo_jimenez22]

A thought from 30k ft above sf: We need more full time people working on interpretability. Incentives need to change, we deserve it.

[Marcelo Jimenez @chelo_jimenez22]

i have my differences with this platform, but i appreciate that efforts like these can just happen on weekends.

"despite all the progress, we still only understand a tiny fraction of what goes on inside these models"

surreal that one of our best inventions is still a blackbox to the people building it. coordinating on the research side is essential. we need to attempt to understand this thing together.

[Prathmesh Patel @PrathmeshPatel_]

@mcpjams launched WebMCP Inspector 🌐

we’ve integrated a browser into our chat client so you can test agent workflows that require browsing + we’ve added support for WebMCP debugging

[Jacob Coxon @hilbertspaess]

I resigned from Anthropic today. I spent the last three years doing pretraining research at both OpenAI and Anthropic. Neither company is acting responsibly. They are racing straight to self-improving superintelligence and gambling with our lives. More thoughts below.

[Marcelo Jimenez @chelo_jimenez22]

@PrathmeshPatel_ @AgenticAIFdn #MCPCon #LetsGoo #Hashtag

[Pamela Fox @pamelafox]

@gbougeard https://t.co/chR1Txf7r4 from @PrathmeshPatel_ is tracking client support for the new spec

[Marcelo Jimenez @chelo_jimenez22]

@PrathmeshPatel_ @mcpjams skills over mcp is capabilities and context in one package. if anyone is trying to implement them in their mcp server/client please send me a dm!

[Marcelo Jimenez @chelo_jimenez22]

@AnthropicAI Standardizing for safety lets go!!!

[Marcelo Jimenez @chelo_jimenez22]

@dsp_ this is the foundation we deserve, congrats team!!

[Marcelo Jimenez @chelo_jimenez22]

ChatGPT now ships with styles! Please test your MCP apps to see how your views look with their design system🫡

[Marcelo Jimenez @chelo_jimenez22]

Super reach, but I wonder if Cross Model KV Cache Transfer had anything to do with this: https://t.co/cwnyJtIFOh

[MCPJam @mcpjams]

MCPJam is now a Silver member of the Agentic AI Foundation 🥈. We’re joining the work around open agent infrastructure with a focus on MCP testing, interoperability, and making protocol behavior easier for builders to verify 😎

[Marcelo Jimenez @chelo_jimenez22]

woke up today thinking about the fermi paradox and how little evidence we have for theories like the great filter. if intelligence itself is the filter, do we really have much more than the dinosaurs and ourselves as data points? maybe intelligence is actually easier to contain, and coordination + guardrails can beat raw capability without consciousness in the equation.

either way, back to proompting!

[Marcelo Jimenez @chelo_jimenez22]

@vercel @awsdevelopers @code @cursor_ai @github @OpenAIDevs Standards and collaboration are awesome. My take, Agent Plugins will widely introduce the Context + Capabilities paradigm, but this time next year we'll be thinking of plugins as MCP servers...

https://t.co/Wjk0aabqs0

[MCPJam @mcpjams]

MCPJam is the only MCP client with full client-side support for the MCP 2026-07-28 draft.
You can test stateless HTTP, server/discover, multi-round tool results, header validation, caching, subscriptions and the new OAuth behavior in one debugger.
Start testing: https://t.co/lHsMznz6Ny

[Marcelo Jimenez @chelo_jimenez22]

@mattt8p Congrats man!! This is really smooth 🏄🏾

[Matt Wang @mattt8p]

I launched Freestyle Remix today.

It's a voice assistant that lives next to your cursor.

Highlight any text, ask it a question out loud, and it researches online and rewrites the answer right where your cursor is.

The video is me fact-checking my lease agreement:

[Marcelo Jimenez @chelo_jimenez22]

sorry in advance

[Marcelo Jimenez @chelo_jimenez22]

@OpenAIDevs 👀👀👀

[Marcelo Jimenez @chelo_jimenez22]

@ChatGPT silently supporting the new MCP stateless spec 👀